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Runtz Automatic Seeds

Zkittlez x Gelato

€25.50
€8.50 / seed
Out of stock
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Seed Type
Autoflowering Seeds
Seed Bank
White Label
Yield
Heavy yield
Climate Zone
Temperate / Continental
Height
Compact plant
Flowering Time
Average flowering period
Sativa / indica
Sativa / indica hybrid

About Runtz Automatic

Runtz Automatic is a 70% indica hybrid that combines the popular strain with indica ruderalis genetics to create an autoflowering version of the crowd-favourite. This strain’s genetic lineage is a Who’s-Who  of famous strains, combining Zkittlez (a blend containing Skunk, Afghani, and Jack Herer) with Gelato (a cross of Sunset Sherbet and Girl Scout Cookies).

The result is an extremely compact strain with a distinct yet manageable odour and high yields, which makes it a great choice for indoor growers who aren't overly concerned with discretion. While autoflowering strains may not be ideal for advanced growing techniques, their ease and reliability make them great choices for novice growers or those who simply have a full schedule.

Growth pattern of Runtz Automatic

Runtz Automatic cannabis seeds grow into extremely short plants with somewhat tight internodal spacing and robust vegetation. Overall, this compact plant boasts a bushy, sturdy structure with a strong central cola surrounded by smaller, resinous buds. Since this is an automatic strain, there’s no need to worry about switching your light, and these plants will begin flowering on their own after a few weeks.

If grown indoors, growers should expect these plants to top out at around 25-80 cm in height. While that’s incredibly short, these plants can still produce high yields of 250-325 grams per square metre over the course of their 60 to 65-day flowering period. Outdoor growers can expect these plants to get slightly larger, though they’re unlikely to top 100 cm and can produce up to 250 grams per plant.

The flowers from Runtz Automatic are chunky and frosty with lime green and purple hues, accented by vibrant orange pistils. The main cola dominates the top half of the plant while the lower branches sport smaller, equally dense buds. These flowers aren’t incredibly leafy, and the buds, while suitably resinous, are not so coated as to complicate trimming, making it a relatively hassle-free task.

Due to this strain’s automatic nature, it is not ideal for advanced growing techniques as growers have no control over when the plants begin to bloom. Methods like mainlining or SCROG (screen of green), which require prolonged vegetation, are simply not an option with these plants. Additionally, their delicate branches make practices like supercropping or lollipopping impractical. While their compact size might seem suited for a sea of green (SOG) setup, the lack of control over flowering can make this a challenge.

Effects, taste, and smell of Runtz Automatic

As these plants reach the end of their flowering cycle, they begin to give off an intensely sweet and fruity aroma with notes of tropical candy and a light earthy undertone. This smell becomes even more pronounced as the plant matures. Growers who value their privacy should consider taking extra steps to mask these plants’ odour.

Once the buds have finished curing, they take on a mellower—though no less pleasant—aroma which mixes tropical fruits, sugary candy, and subtle hints of citrus zest to create a sweet and tangy bouquet. Sampling Runtz Automatic shows off a flavourful blend of tropical fruit candy on the inhale, with creamy undertones and a slightly herbal edge on the exhale. Overall, this strain is sweet and dessert-like as the name would suggest.

The effects of Runtz Automatic are fairly long-lasting and start with a burst of euphoria and uplifting creative energy before transitioning into a deep body-stoned feeling. Overall, this strain is a fantastic choice for unwinding after a burst of productivity before gradually melting into the couch.

Did you know?

  • Much like its parent Zkittlez, Runtz is named in honour of a popular American candy.
  • Originally, Runtz was bred by the Runtz Crew in Los Angeles in 2010, but gained immense popularity after its debut at the Emerald Cup in 2017.
Seed Type
Autoflowering Seeds
Runtz Automatic is an feminized autoflowering strain that flowers regardless of the light cycle.
Seed Bank
White Label
Yield
Heavy yield
Runtz Automatic can produce a very large yield, but may require a little extra care to achieve their full potential.
Climate Zone
Temperate / Continental
Runtz Automatic can be grown outside in a normal warm summer.
Height
Compact plant
Runtz Automatic will have relatively small height gain during the flowering phase.
Flowering Time
Average flowering period
Runtz Automatic will need an average flowering time to reach their full potential.
Sativa / indica
Sativa / indica hybrid
Runtz Automatic is a Sativa / Indica Hybrid.

Product Reviews (7)

4.6

4.6 out of 5 from 7 review(s)

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No problems at all
Bit early to tell but they cracked without a problem. Good genetics showing.
looking good
She’s up and reaching for the light after just 48 hours. Very impressed.
Ugly Beuty
The most tender feelings - my first plant and my favorite. When ripe, the cuttings are as red as a baboon's butt. The best Fridays :)
Verified purchase
Reliable+ good choice
At the beginning of July 2025, the first 3 plants had grown up on the south window, and were ready for harvest at the end of October. Without pruning them, they grew to a height of 60 cm to 1 metre. At the end of October it was the turn of the next 3 under artificial light, they are now, at the beginning of March, shortly before harvesting. This time I had cut the tips after the first 3 sheets, the yield is much greater.
Zuverlässig+ gute Wahl
Hatte Anfang Juli 2025 die ersten 3 Pflanzen am Südfenster hochgezogen, waren Ende Oktober erntereif. Ohne sie zu beschneiden wurden sie 60 cm bis 1 Meter hoch. Ende Oktober kamen die nächsten 3 unter Kunstlicht dran, die stehen jetzt, Anfang März kurz vor der Ernte. Dieses Mal hatte ich die Spitzen nach den ersten 3er Blättern gekappt, der Ertrag ist dadurch deutlich grösser.
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Great plant
So, she stood inside, then outside, then inside again. Light stress, high temperatures, sometimes well over 30 degrees. I think growth was slowed down here and there, she didn't have it easy as a seedling, the only thing that was always right was the PH value of 5.8 to 6.3. Only half of the mineral Canna fertilizer was always dosed, with the Light mix soil it was sufficient to water every 2nd-3rd day. some topping and training, but not dogmatically :D. The bottom line is: A beautifully branched, 80cm high, compact, fragrant plant, without mold, without chirping. 185 grams under 100Watt. The only swab I have to make, she scratches when smoking, I have really smoked milder weed, although she only got PH regulated, chlorine-free water from 3 weeks before harvest. But the most important thing, the "function" is exactly as described;) .
Tolle Pflanze
Also, sie stand drinnen, dann draußen, dann wieder drinnen. Lichtstress, hohe Temperaturen, teilweise weit über 30 grad. Ich denke auch hier und dort wurde das Wachstum verlangsamt, sie hatte es als Sämling nicht einfach, dass einzige was immer stimmte war der PH Wert von 5,8 bis 6,3. Vom mineralischen Canna Dünger immer nur die Hälfte dosiert, mit der Light mix Erde genügte es jeden 2.-3. Tag zu giessen. etwas Topping und Training, aber nicht dogmatisch :D. Unterm Strich ist herausgekommen: Eine schön verzweigte, 80cm hohe, kompakte, duftende Pflanze, ohne Schimmel, ohne Zwitterrei. 185 gram unter 100Watt. Den einzige Abstrich den ich machen muss, sie kratzt beim rauchen, habe echt schon milderes Gras geraucht, obwohl sie ab 3 Wochen vor der Ernte nur noch PH reguliertes, Chlorfreies Wasser bekam. Aber das wichtigste, die "Funktion" ist genau wie beschrieben;) .
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Runtz
Easy to grow plant. Very good harvest outdoors in a greenhouse. Gorgeous plant with very large buds. Candy smell :)
Runtz
Plante facile à faire pousser. Très bonne récolte en extérieur sous serre. Plante magnifique avec de très grosses têtes. Odeur de bonbon :)
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Runtz auto
It's not the same as in the photo, far from being a little red-purple while I'm 7 days away from the maturity of the buds
Runtz auto
Elle est pas pareille que sur la photo loin d'êtres de cette couleur un peut rouge violet alors que je suis a 7 jours de la maturité des têtes
4.6

4.6 out of 5 from 7 review(s)

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