If you know only one thing about cannabis plants, it’s that they need water. But how much is enough? Is there such a thing as too much water? Is the stuff from the tap good enough or should I use bottled water? What about nutrients? These are all questions that a grower might find themselves asking. And if you’re not asking these questions, you should be.
Luckily, we’ve put together this guide to answer all of these questions and more. So, grab a cup of coffee and start taking notes, because there’s a lot to go over. And yes, this will be on the test.
How much water does weed need?
Like everything else when it comes to growing, the answer is “it depends”. Believe it or not, weed plants are as much as 90% water by volume. If you’ve ever broken open a live plant, you’ve seen just how much water these things can hold. This means that they need far more water than your average houseplant and will begin to wilt after only a day or two without it.
So, how much is enough? The most commonly cited number is 4 litres of water per every 500 grams of dry flower you expect to harvest. For example, let’s say that we’re growing 4 Northern Lights plants in a 1 square meter space. On average, this strain produces right around 500 grams per square meter, so we’d need 4 litres of water per day. That’s one litre per cannabis plant per day on average.
That’s a pretty reasonable place to start, but there’s always more to it than that. If you just dump a litre of water on a seedling, you’ll drown it. Conversely, if you’re only giving a plant 1 litre a day while it’s in full bloom, your yields will suffer tremendously.
This kind of math is a good starting point, but nothing more. No two plants are the same and different growers face different challenges. We definitely advocate ‘feeling it out’, so let’s break down what to keep in mind when watering your cannabis plants.
How much water should I give cannabis plants?
Enough, but not too much. If that sounds vague, well, it is. Welcome to the imperfect science of growing weed. But, just because there’s no precise answer, doesn’t mean there aren’t best practices to follow. How much water your weed plants need will come down to a wide range of factors.
1. Stage of the plant
As mentioned above, cannabis plants have different needs at different stages of growth. Adjusting your watering habits accordingly is a must. Generally speaking, plants need less water when they’re small and more water when they’re big. We know, truly mind-blowing stuff.
Seedlings shouldn’t ever need more than a few hundred millilitres of water at a time while a plant in the middle of the vegetative phase might drink a litre of water every 2-3 days. In the middle of flowering, though, some plants might need a litre (or more) almost daily.
2. Medium
The medium that you use has perhaps the largest impact on how often you should be watering. There’s a wide range of soil types out there that cannabis growers can choose from, each with its pros and cons.
Traditional soil is a popular choice and forms the basis for many growers’ preferred mixtures. The water retention of soil is fairly high and wet soil gets quite dense. These two things mean that soil needs to be watered less frequently than something like coconut coir. While that might sound like an advantage, soil’s ability to hold onto water can lead to problems.
If your water isn’t draining quickly enough, you run serious risks of developing root rot, mould, or fungal infections. Any of these taking hold deep in the soil is an almost certain death sentence to a plant and can even contaminate an entire harvest.
For this reason, most growers prefer to mix soil with coco coir to help aerate or perlite to help pull some of the water out of the soil. The specific ratios that you use will affect how frequently you need to water your plants. As always, your plant will tell you what it needs. If it looks healthy, you’re doing a good job.
3. Pot size
After medium, the size of the pots you’re growing in will have the greatest impact on the amount of water you’ll need to use. A thorough watering can require 25-30% of the total volume of the pot. But it’s best not to do it all at once.
Let’s assume that you’re using a 20-litre pot filled with a soil/coir mix. Start by pouring in 2 litres of water (10% of the total volume of the pot) making sure to water evenly around the entire plant.
Now, life up the pot and look for runoff. If you see some coming out, then good, you can stop watering. If there’s not any runoff after 30 seconds, then add another half-litre at a time until you start to see water running out the bottom of the pot.
Note that if you’re using fabric pots, you’ll likely see some water coming out of the sides, that’s good, but make sure that it’s coming out the bottom as well.
4. Environment
The ambient heat, humidity, and airflow of your grow space will greatly impact your watering schedule. Unsurprisingly, hotter and drier conditions will cause your plant to use more water and your soil to evaporate more quickly. Additionally, increased airflow around the base of the plant will cause the topsoil to dry out (that’s a really good thing, as many pests just love damp soil).
Ideally, you should keep your grow space around 25-30° C and the humidity around 60% (45% during flowering). This may require the use of humidifiers, dehumidifiers, ventilation fans, or even air conditioners. But keeping your plants in this range will help them use water the most efficiently.
The type of lights you use can also play a role in your watering schedule. If you’re using hot HPS lights then keeping your area cool can be a real challenge. On the other hand, growers in colder climates might struggle to keep the heat up if they’re using LED lights.
5. Growing outdoors
Everything we’ve said so far has been focused on indoor growers since they can control their plants’ environment. If you’re growing outdoors, however, things get complicated quickly. First of all, you’ll likely need to water every single day as the sun and wind will naturally dry out the soil.
That is, of course, unless it rained. If you don’t have a greenhouse or some kind of covering, then you can’t ever be in total control of your plant’s watering schedule. For outdoor growers, it’s typically worth investing in a soil meter to keep track of the moisture around your plants. Since you can’t check for runoff, it’s the only way to know what’s really going on.
Also, the sheer size of outdoor plants makes many of the numbers cited above almost meaningless. A 3-meter plant in the middle of summer can drink upwards of 10 litres of water every day.
How often should I water weed plants?
Knowing how much water you need is one thing, but knowing how often to use it is another.
Watering cannabis seedlings
This is when your cannabis plants are at their most vulnerable and extra special care needs to be taken. Once you’ve transplanted a seedling into the soil, it’s important not to go overboard with the first watering. Plants grow their roots out to search for water, if there’s too much, too close then the plant won’t develop a root structure strong enough to support it through flowering.
Many growers opt to start their seedlings in smaller pots so that they can keep them in evenly watered soil before transplanting them to larger pots in a few weeks. However, it’s also possible to plant your seedlings directly into the pot that they’ll spend their whole lives in.
For your seedling’s first watering, pour a small amount of water (a few hundred millilitres should be plenty) in a circle around the base of the plant. Every day, check the soil by sticking a finger in up to the first knuckle (about 2 cm) to check the moisture. After a few days, the soil should be dry and you can repeat the process.
Watering cannabis during the vegetative stage
Once your cannabis plant has matured past the seedling stage, it’s time to get down to business. As before, check the soil’s moisture by sticking a finger in there and, once the soil is dry, it’s time to water the plant properly.
Exactly how much water you’ll need here will vary based on the factors we’ll outline below, but you should pour enough water in so that there is some runoff. It’s important to make sure that the soil is damp the whole way through.
On average, it’s best to water every 2-4 days. If your soil is drying out faster or slower than that, you may want to check your humidity levels. It should be around 60% at this stage of growth. Likewise, if your soil is still damp after 5-6 days, you may have a drainage or aeration issue. Using fabric pots instead of plastic ones will help keep your soil evenly moist.
Watering cannabis during the flowering stage
At this point, just keep doing what you’ve been doing. Flowering cannabis plants are thirsty and they drink a lot more water. You’ll likely need to water them every other day. By this point, your humidity should be sitting closer to 45% so be sure to keep a close eye on the topsoil.
When is the best time to water cannabis plants, should I water at night?
There is some controversy over the best time of day to water cannabis plants. Some growers believe that cannabis should be watered at night time, but most suggest that they should be watered earlier in the day.
Those that believe cannabis plants should be watered at night argue that in a natural environment, precipitation does not fall when the sun is shining, due to cloud cover. Many also state that if water droplets resting on the leaves are exposed to heat and bright light, they may act as “magnifying glasses” and burn the leaves.
It appears that this is just a myth, although leaf burn can occur through prolonged contact with some fertilisers.
Most outdoor growers will tell you to water in the morning. This makes sure that the water has a chance to soak into the soil before the heat of the day evaporates it all away and ensures that the plant has enough water and nutrients to photosynthesise.
But… if we’re not growing outdoors, what are we supposed to do? Well, it turns out that the exact same principle applies. The best time to water your plants is just after the lights come on. This is especially important if you’re using hotter HPS lights as they tend to dry out the soil, but even growers using LEDs should try to stick to this schedule.
In any case, possible issues can be avoided altogether if care is taken to simply direct the water towards the soil and not the leaves!
Keep in mind that these schedules are rough approximations. If you ever see that your plant is getting over or underwatered, you’ll need to make adjustments immediately.
Related post
Do my weed plants need more water?
Plants need water, so more water means better plants, right? Well, yes and no. While underwatering is what many growers fear, overwatering is far more common and (arguably) even more dangerous.
Overwatering can lead to the growth of mould, fungus, or even cause root rot. On top of that, overwatering can be even harder to solve as the solution isn’t as simple as “just add water”. The big issue, though, is that the symptoms of overwatering and underwatering are very similar and knowing which problem you’re dealing with can be confusing.
Both problems are characterised by wilted, droopy, and just generally sad-looking plants. However, experienced growers can quickly tell the difference by looking closely at the leaves. If your cannabis plant’s leaves are turning brown and crispy at the edges, then it’s not getting enough water. A plant that’s been overwatered will develop leaves that claw downwards at the tip and the entire plant will feel heavy and damp.
In either case, just check the soil. If it’s dry, the plant needs more water and the problem should solve itself in a day or so. If the soil feels too wet, then you’ve got a different issue. Overwatered plants can be saved, but it’s certainly harder. If your plant seems to be drawing, check out our guide on overwatering for a full breakdown of what you can do to save it.
Related post
How to prepare water for weed plants
As they say, “You are what you eat” and plants are no different. Taking the time to properly prepare your water will ensure that your cannabis plants get the most out of the available resources and lead to happier, healthier plants.
Nutrient mixes
Probably the most important part (other than the water, obviously) is the nutrients. There are hundreds of micronutrient combinations out there that offer various benefits like bigger buds, faster ripening, or enhanced root growth. Overall, each of these has its place, but you don’t need to use them all at once.
If you’re new to growing, all you really need is a good veg/bloom/micro package. Every major nutrient producer out there sells some kind of all-in-one starter pack and these are all that you need to work with. As you grow a few cannabis plants, you’ll learn what works best and don’t ever be afraid to experiment, though it’s best to only change one thing at a time.
Mixing nutrients might seem complicated at first, but it’s deceptively simple. Just follow the instructions on the bottle. The manufacturers know what they’re doing and they’ve developed these mixes to be used in specific ways. When it comes to cannabis nutrients, more is NOT better. Adding too many nutrients is a surefire way to kill your plants.
Once you’ve added everything together, stir it vigorously. The goal is to create a completely homogenous mixture to make sure that all of your plants get all the good stuff they need.
pH balance
Another key thing to monitor is your pH level. While soil pH is the most important number, keeping the water you give your plants in the ideal range will help immensely. The optimal pH for cannabis plants is between 6.0 and 7.0 with slightly lower being better; 6.4 is a good target to shoot for. Note that if you’re growing hydroponically, the ideal pH range is slightly lower (5.5-6.0).
The cheapest and easiest way to monitor your pH levels is with pH test liquid. This should be familiar to anyone who took a high school science class and only takes a few seconds. Fill a small test tube with the water you’ll be using, drip a few drops of test liquid, shake well, and consult the colour chart. It’s an imperfect reading, but it’s more than accurate enough for most purposes.
A digital pH meter is by far the best and most accurate means and is something that many growers should consider investing in. The most basic ones can be found for under €20, however, these aren’t really any more reliable than test liquid. If you want to get the most accurate readings, you’ll need to shell out a little bit more to ensure the most accurate readings.
Many of the most advanced meters out there today measure not sure pH, but also EC (electrical conductivity) and PPM (parts per million) which can provide even greater details on the state of your water.
When you’re growing in a new place, always check your water’s base pH before you start mixing in nutrients or any other additives. If, like many rural areas or older buildings, you have particularly hard water, you’ll need to pick up some pH-down solution. This is essentially just a mild acid that will offset the basic nature of hard water. Likewise, if your water’s pH is naturally below 6.0, you’ll need some pH-up. Every brand of nutrients sells some version of these, so get whatever you feel comfortable with.
Once you know what you need, it’s time to start mixing. Always add the pH solution after you’ve added all other nutrients as each additive is liable to affect the water’s pH balance. When you’re adjusting pH, a little bit goes a long way. Use less than you think you’ll need, stir well, and test again. This might take a few tries to get it right, but once you’ve got your ratios down, it’ll be more or less the same every time.
Related post
Reverse osmosis
This isn’t the kind of thing that everyone needs, but if you’re using well water, water from a stream or lake, or just don’t have reliable access to clean drinking water, then an RO filter is a good idea to consider.
Basically, these filter out everything that might be floating around in your water. Heavy metals, salts, minerals, and even bacteria can all be effectively filtered out via reverse osmosis. While many commercial-scale growers find the investment worth it, setting one up at home can be pricey with many systems selling for hundreds, if not thousands, of Euros.
How to water cannabis
OK, now that we’ve gone over how much and how often it’s time to go over how to do it. While watering a plant can be as simple as, well, watering a plant, there’s more to it than that if you want to get the most out of your grow.
The best general advice for watering weed plants is this: water less, but water well. Sounds nice, but what does it actually mean? Well, as we’ve mentioned above, you should be watering your cannabis plants every few days as opposed to every day. Plants aren’t like people, they don’t need to eat all the time.
Giving your cannabis plants enough water and nutrients to last a few days (and giving them the time to use it all) will ensure that your plants don’t get nutrient burn, that your soil pH doesn’t go off, and that your plants will keep growing in search of their next meal.
Let’s go back to the example we mentioned earlier: We’re growing four plants each in a 20-litre fabric pot. How do we actually go about watering these?
Step 1: Estimate total water
We’re going to start with 25% of the total volume of soil we’re using. Since we’re using a total of 80 litres of soil, we’ll likely need 20 litres of water. This doesn’t all need to be in the same vessel, we find that a 10-litre watering can is ideal as it’s easy to carry, quick to fill, and it’s a nice round number for calculations.
Step 2: Mix it up
OK, so we’ve got 10 litres of water in a watering can, what now? Well, now it’s time to consult our nutrients. Right now, our cannabis plants are in the vegetative stage and the brand that we’re using calls for the following mixture:
- 1.8 mL/L of Grow nutrients
- 1.2 mL/L of Micronutrients
- 0.6 mL/L of Bloom nutrients
Some very basic math means that we need a total of 18 mL of Grow, 12 mL of Micro, and 6 mL of Bloom. Add each of these one at a time and then mix the water well. You’ll now need to check your pH level and adjust it accordingly.
At this point, it’s also worth mentioning that you don’t need to add nutrients every time you water. Depending on how often you’re feeding your plants, you’ll want to use just plain water every 3-4 feedings. This will help make sure that the plant has used all of the nutrients before you add more. Overfeeding can lead to nutrient burn which can cause serious damage if left untreated.
Step 3: Pour the water on the soil
It might be tempting to just dump an entire watering can at once and call it a day but take your time. Start at the centre of the pot and pour in about a third of what you plan on using. Pour it slowly, and be sure to cover the entire area as the base of the plant. Give that water a minute or two to settle and spread out before slowly watering around the edge of the pot.
Don’t go overboard here, overwatering (as stated) is a serious risk. Just because you think you’ll need 5 litres per plant doesn’t mean that the plant agrees. If you start seeing runoff, you’re done for now.
Note that, since we only used a 10-litre watering can, this is enough for 2 of our 4 plants so we’ll need to do it all again. Watering properly takes time, commit to it.
Related post
Step 4: Dealing with runoff water
Once you start to see runoff water, you’re (almost) down for now, there’s just one last vital step. Never leave your plants sitting in runoff. This is a breeding ground for all manner of infestations and is a surefire way to damage your crops.
There are a few ways to handle runoff but the easiest is to just use a towel to sop up the water that comes out of the bottom of the pot. It can take a bit of time, but it’s risk-free. Another option is to keep the trays under your pots at a slight angle with a drainage hole in another container. This requires a bit more setup but does make cleaning up easier. If you’re growing more than a few cannabis plants, this is worth the saved time.
Many growers also test their runoff for pH and total dissolved salts (TDS). Doing so, and comparing the results to the water that you put in, can give you a good idea of how your plants are performing underground.
Water you waiting for? Get started
Watering weed is one of those deceptively simple things. While, at its core, it’s so easy a sufficiently trained chimp could likely pull it off, the sheer importance of it to a healthy cannabis plant means that you shouldn’t take it lightly.
By making sure that you follow these steps and pay attention along the way, you’ll give your plants everything they need to, not only grow but truly thrive.
- Disclaimer:Laws and regulations regarding cannabis cultivation differ from country to country. Sensi Seeds therefore strongly advises you to check your local laws and regulations. Do not act in conflict with the law.
Hardwood furniture possesses one thing extremely organic regarding it.
There is feeling of warmth, of
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How high are you man, this is an article about growing weed. Stay safe and enjoy I guess lol.
I’m high and was wondering the same shit. 😆
I water in the middle of the day for indoor grows and before I go to bed for outdoor. I’ve had some plants that had no real strict schedule with watering and they did just fine. I feel watering is one of those things where you just feel it out and if it’s too dry, then water the ladies.
I reаⅼly like it when peopⅼee gеt together aand share opinions.
Grеat website, continue the good work!
This was an outstanding read. Thank you very much for your insight.
Remember, the ways to grow a garden is relative to each individual…what works for some folks ,might not work for you, and visa-versa. You must experiment, and be prepared to learn from your mistakes…and you’ll make the odd mistake…just be patient, it’s a plant, let it grow.
helpt me thanks
What is the effect on plant growth, if you just put the seeds into earth (outdoors) and let it grow automatically, the roots should do the job and the plant would be adapted to the little water. Are the buds smaller or what will happen ?
Hi Henning,
Strictly speaking, we cannot answer questions regarding growing in the comments. However, in this case I can tell you that there are so many variables not specified in your question that it is not possible to answer it practically either! Sorry about that. You might find this article about tips for outdoor growing interesting though.
With best wishes,
Scarlet
birds will eat the seeds
Thanks for the concise information, to the point. Just some advice for everyone out there: If you’ve never grown a plant before, any plant, or if you really have no idea how to grow one, then you may want to hold off on growing cannabis. This comment section is chock full of very basic questions that someone should absolutely know before jumping into a cannabis grow. If you don’t know how or when to water a plant, you should probably practice with a houseplant or something similar first, otherwise you’ll have a bunch of problems and end up on the comment section of some blog where the authors aren’t even allowed to answer your questions. That’s what the Forum is for.
Good thing your not the one running this website!! How you’ve laid back and lit one up and have a different attitude now? Have a hap hap happy day!!!
I miss the part about run-off and drainage.
Yeah I will share here the Tips which has been passed from my Indoor Landscaping Team Near me (Sijigreenhouse) on How to water cannabis properly (when using a well-draining mixture with liquid nutrients)…
Wait until the top of the growing medium is dry about an inch deep (up to your first knuckle – just use your finger to poke a hole in the soil and see if it feels dry).
Add water until you see 10-20% extra runoff water drain out the bottom of your pot. Go back to step 1. Note: If water takes a long time to come out the bottom, or if pots take longer than 5 days to dry out before the next watering, you may actually have a problem with drainage (more info below).
this is great
If you want a stable environment in the pot and good respiration for your roots DO NOT allow any runoff to appear from the bottom of your pots. Give the plants only a little water at a time. Do not suffocate them by drowning. Although water contains oxygen the roots can and will be restricted in their respiration. Don’t do that unless you know that your garden climate conditions and your substrate quality will permit all of that water to drain out of the bottom of your pot fairly quickly. One day is “quickly”. Three days in stale water – not “quickly” at all.
I’m looking to start to grow a “trainwreck” or “Girl Scout cookies” in my shed outside it has been covered in tin foil, I have a list of equipment would this be fine to start growing?
Exhaust fan
Lighting
Fans
Pots
Grow kit
Temperature control
Pest control
Soil
Seeds
Hi Mitchell,
Thank you for your comment ? Unfortunately, for legal reasons we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. You can also check out these articles, which have additional information about growing as a beginner: Build the best basic indoor grow setup, and Top five tips for growroom safety. It’s not clear from your comment, but I hope you don’t mean you have covered the outside of your shed with tinfoil?! You should definitely not do this, as all it will do is attract attention… 😉 I hope this helps.
With best wishes
Scarlet
I honestly wouldn’t recommend using tin foil at all. With a shed, and this is my opinion.. u can look into yourself if u want to.. but I’d recommend painting the entire interior FLAT WHITE, u can get more light to shine off that than u can off of any type of tin foil. That would be a last resort for me. And if u wanna go the foil route, then Mylar sheets are ur best bet. With foil, for it to work, it can’t have any creases or anything in it, it has to be completely flush against the wall for it to even semi-work. But if u go the paint route make sure u get the FLAT WHITE PAINT. It might sound good but glossy white paint works even worse than regular tin foil. This is all coming from trial & error experience, so take it or leave it.
Hi ! how often I should use nutrients when I watering my plants , for example I’m using Soil Bloom + Soil PK Boost , all the time when I’m watering , now I’m flowering period and I’m watering one time in 3 days or 2 , I need to use all the time nutrients ? or pure water ?
Thanks
Hi Grigore,
Thank you for your comment ? Unfortunately, for legal reasons we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
Very helpful, answered a pressing question, and the answer is no worries!
Thank you
I’m growing in the ground just moved to a new place and my soil stays wet should I still water or just add nutrients this is first time I’ve had this problem
Hello Will,
Thank you for your comment ? Unfortunately, for legal reasons we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
Didn’t need all that info.do you water weed plants every day once a weed.how often?
should super thrive be used and when
Hello Nick,
Thank you for your comment ? Unfortunately, for legal reasons we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
What great info.Thanks for the grow info we can use
I’ve been told that, if growing in soil, pH adjustment of fertilizer and water isn’t needed, since the soil acts as a pH buffer. You still need to watch the runoff, and if it’s out of whack, you gotta adjust the soil itself, ex with dolomite lime. Always take a small amount of soil and do a soak test before planting anything.
Also worth mentioning that most fertilizers will auto-regulate their pH. At least, the organic stuff I use does.
I feel like there’s some confusion between growing hydroponically and in soil, since with hydro you do need to watch the pH of things going into the basin.
Hi can u tell me something do u ever give your plants just water now and again?
Hi Steven,
Thank you for your comment ? Unfortunately we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
Nice of the water treatment plant and Rain Water Harvesting is a process of saving the rain water in storages and subsequently using it for specific purposes. The rain water is collected from roofs and the other high places, from where the water is falling on the ground. This rain water is stored in deep pit or reservoir The collected water is used for the many purposes such as domestic use, irrigation, gardening, ground water recharging and drinking.
I got one question, How often do i Add ferts to water? My girls need water every 5 days, and on AN schedule says how much ferts they need on a weekly basis..Should I add ferts every watering or?
Hi CoviKlaFlaire,
Thank you for your comment ? Unfortunately we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
Does any one have the water requirements (or a rough idea) for plants that are propagating indoors? Also how much less water does a plant that is in vegetative growth use compared to a flowering plant? Any ideas or suggestions would be great!
Thanks.
Hello Nate,
Thank you for your comment ? Unfortunately we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
Finaly! Something actualy understandable! lol
My plants seems dry on top but they are still super heavy i dont understand they are dry even 5cm deep but they weigh a ton like i juste watered them ??
one newbiecquestion, i hawe 3 half succcesfull grow behind me, im still confused about feeding ,i use 5 gal pots and in the most hot days i doont need to water them sooner that every 5 day.. sometimes and more.. so shoild i gave th3m ferts with every watering or??
Hello Diskokobaja,
Thank you for your comment ? Unfortunately we cannot respond to grow questions on the blog, but we do have the Sensi Seeds Forum where you can ask a thriving community of gardening fans for advice, share your experiences, and see if your question has already been covered. I hope this helps.
With best wishes
Scarlet
I have a few questions. 1 I’m growing outdoor and I bought hydroponic nutrients for my cannibus. Is it ok to mix the solutions and water the plants right after? 2. If the Ph for the soil is different than the ph in the solution how do you fix that? Thanks!
Hello Nando, thank you for your comment.
For legal reasons, Sensi Seeds cannot answer questions about growing on the blog. However, we do have the Sensi Seeds Forum, where you can find lots of information about many grow topics and also ask questions. I hope this helps 🙂
With best wishes,
Scarlet
holy shit is this 1983?
Hello e,
No, I can reassure you it’s still 2016, and yet due to legislation in the Netherlands we still cannot answer grow questions on the blog because we must walk a very fine line between providing information for educational and entertainment value, and encouraging people to break the law (I don’t like it either but that’s just the way it is). Hope this clears up any confusion. 😉
With best wishes,
Scarlet
1. You can feed with a mix of hydro nutes and then water after, though I personally just mix the nutes with the amount of water I intend to use so it’s all done at once. 2. Don’t worry about the ph; good soil is awesome at regulating it without your help.
Do you HAVE to feed cannabis plants nutrients? I don’t know what or how to feed my plants, is it better for me to just not feed them nutrients at all? (But still water them of course)
It’s alot better yes, Alaska fish fertilizer is good and easy to find (Fred Meyer for me) use directions on bottle, probably a teaspoon or two per gallon, use the 5-1-1 until you see flowers then switch to the bloom blend, it has lower N. Feed, water, feed, water, Use a teaspoon of CalMag EVERY watering until you see flowers. I use General Hydroponics Grow and bloom blend + other stuff. Anything sea or fish based is candy to MJ.
It is my understanding that you do not have to give them nutrients however if you want to get the most out of your plant nutrients are advised
if you want to lose quantity sure dont use any plant nutes, but you are probraly gonna run into some sort of nute-problem where u need something (organic or something u can flush out of the soil at 2-3 week before harvest..
Not if you use a rich soil like Black Gold or Happy Frog. Fertilizers are optional as they grow older & have used up what’s in the soil, but for me nutrients–especially the chemical kind–just complicate things.
There are tons of natural, cost-effective ways to enrich your soil to feed your plants if you choose to. Watering your plants occasionally with aquarium water or diluted human urine (1 cup urine to 8 cups water) are a couple examples. Banana peels can also be boiled to make a potassium-rich fertilizer. Just Google “natural cannabis fertilizers” & you’ll find tons of stuff.
But again, these are all optional. You’ll get bigger buds if you use fertilizers the right way, but as a new grower there’s also more chances to mess up. Some mediums like hydro & coco coir might require fertilizers; I’m not familiar with those. But with soil it’s optional.
If you purchase Fox Farm soil mixture, you won’t be needing any nutrients for awhile. There’s nutrients in the soil already.
yes, mine are outdoors been growing for 15 yrs in the nevada desert.
its all about great soil proper watering i do 6 plants, 3 with all the chems and mircle grow . 3 just grow, water and good soil the diffrence is slight they are 6 ft high and 6 ft wide and pretty to look at.harvest at halloween
Help! I over watered my plant.
Watered it about 1pm est and within 2 hours, it basically looks like the leaning tower of pisa. Brought it inside and stuck it next to my boiler about 2 hours ago (its now 8pms est). The plant is young as well. What do you recommend? All advice is appreciated.
If its soaking you might be better to transplant into another pot with fresh soil and perlite, if the roots are starting to smell and decompose into a compost-like material, you will need to cut the bad off before repotting. Only cut what is definitely diseased or rotting. Do not feed same day as repotting and put under low intensity light.
Don’t put it next to a heat source after drowning it with water bud…make sure your container has holes in it so water can drain out and just let it dry out by itself. You could get a new pot, new soil and transplant it if its fuktup.
Very useful information but at what age do I need to start feeding them
Never adjust ph for plants in soil.the soil does this .
Hey I’m a rookie and I was wondering if u could email me I have a few questions I need awnserd
You say not to PH down if your growing in soil but my water coming out of the faucet is over 9.5 pH I am not in the ground I am in 7 gallon pots will the soil still stabilize my pH
Make sure your pH tester works I bought 2,at homee depot to check and both both read diferent bought 2 more and took back. I was told from home depot to go to nursery and buy ocean breeze one soil perfect for pot 15 a bag already has bat guano just add 2shovels full of perlite to to nursery an tell them for pot plants very with big buds usi ng only 1/4. To 1/2 what it. Calls for get a didital tester or buy water pure I do at half life also and 2
1/2 teaspoon of molasses mix sit by plants per gallon let zit water even with outdoor temp use only top 3/4 of gallon salt buildup at bodem throw away let dry out good. Happy bid bid to you. Steamer
Really?? I have grown before in soil without bothering with ph ect just tap water or rain had no problems whatsoever grew some magical stuff
You got lucky that’s all.
Soil does not balance ph
Thank you for this Article.
I can give you a really good organic soil mixture, that you can use outside, and produce some nice crops. Start with a whellbarrol. Get you some Horse, about 50 pounds wet, and compost it for about 6 months in this mixture. Go to walmart, and pick up one bag of Jungle Grow organic soil, 1 bag 40lb Top soil, 1 bag 50lb Black cow, and a 40lb bag of powder lime. Use about 20lbs of the line. Mix all up in to wheelbarrol, this time of the month would be perfect. By April you will be ready to dig your holes and put in your soil mixture. Dig out about enough room for about 7 1/2 gal and fill up hole. Start your seedlings in March, and they will be ready to plant on April first. This will take you all the way through veg stage, and you want need any fertz until they start to flower. Get you some Maxi Grow 5-15-14 Bloom, and put on once a week. 5grams with one gal of water. In 8 weeks you will have some really nice plants. good luck and happy growing.
what do u think of useing HOOKAH water to use to water plant???????
Hmmm as long as the ph is ok.Go for it!!
I think this way sometimes but realize if cured to long it gets mould..i think from the day you cut the plant down dry it and cure it and in jar s ready to be sold total for really fresh taste like 10-14 day max…no long time cure potentcy goes south
Bad idea. It wont add anything to your potency (if thats what you are thinking) and will most likely be harmful. Bongs and hookas are breeding grounds for mold.
No…don’t put that shit in your plant. The plant likes water not resin from smoking.
Nicotine is harmful to plants, a poison just like it is to pests which is why the plant produces it. Your an idiot if you add hookah water to your plant
Thank you for all the great information here. I grow only outdoor cannibus. It would be awesome to have more information here for outdoor growing, like you guys have for indoor. I have been struggling for a few years now with my grows. My husband is very old school. He will say ” it is just a weed, it only needs water.”, well yes and no, if you want quality and quantity you must do more. Now a friend has been telling me every thing is wrong, feed only at night, etc. So, I am starting all over, and in need of help and correct information.
Mornings is the best time 6am
If you’re an outdoor grower; a helpful hint to maximize potency and best results in your buds is to cure it once it has been harvested. Curing means: Keeping your buds in a mason jar for at least 2- 4 weeks, the longer the better. Almost like a fine wine, age makes perfection.
Hi Snuffy and Denise,
Excellent advice, curing makes a world of difference. I’m going to add that you should open the mason jars a couple of times a week for 10-15 minutes, to allow fresh air to circulate. Happy curing!
With best wishes,
Scarlet
I think this way sometimes but realize if cured to long it gets mould..i think from the day you cut the plant down dry it and cure it and in jar s ready to be sold total for really fresh taste like 10-14 day max…no long time cure potentcy goes south
Do you put the buds straight into the mason jar after they’ve been cut and trimmed from the plant?…like no airdry time?
Thanks.
Has any one grown by watering with water only no nutrients?
Thanks for the tips. Not a rookie but just was interested in another viewpoint. I am growing something from Amsterdam and it is doing well. William
Thank you very much for this information you have provided us!
It helped greatly