Description
Bred by Sweet Seeds from a cross of Runtz and their own Sweet Gelato Auto, Runtz XL Auto Feminised carries the hallmark fruity, candy-sweet aroma its lineage is known for. The Indica-Sativa balance produces a well-rounded, potent experience anchored by very high THC levels exceeding 25%, all in a feminised autoflowering format that removes the guesswork of sexing plants or managing light schedules.
Despite its short stature, Runtz XL Auto performs well indoors, yielding 450 to 600 g/m2 under optimized conditions, making it a productive choice for a standard grow tent. Outdoor plants come in at up to 200 g per plant, a modest but respectable return given the compact frame. The 8 to 10 week harvest window from seed is one of this variety's strongest practical assets, allowing multiple runs per year and fitting comfortably into tighter seasonal windows. Its manageable height and autoflowering nature make it an accessible grow for newer cultivators without sacrificing the quality genetics that experienced growers expect from Sweet Seeds.
Runtz XL Auto Feminised Seeds
Description:
A compact, fast-finishing autoflower from Sweet Seeds, Runtz XL Auto delivers very high THC genetics in a fruity, candy-forward package built from Runtz crossed with Sweet Gelato Auto.
Best For
Beginner growers seeking a potent, balanced euphoric high
- Type
- Feminised – Autoflowering
- Genetics
- Runtz x Sweet Gelato Auto®
- THC / CBD
- Very High THC (25%+) / Low CBD (0-1%)
- Effects
- Relaxing,Uplifting
- Flavour / Aroma
- Fruity
- Height
- Short
- Yield
- Modest Yield (up to 200gr/plant) / High Yield (450-600gr/m2)
- Auto Harvest
- 8 to 10 weeks
- Difficulty
- Easy
FAQ
All you need to know
about this product
Runtz XL Auto brings Sweet Seeds' candy-sweet, 25%+ THC genetics to beginners in a compact autoflower ready for growers who want serious results without the complexity.
Runtz XL Auto is specifically rated as an easy grow, making it one of the more forgiving autoflowers on the market. The feminised autoflowering format means you skip plant sexing entirely and there's no need to manually adjust light schedules, which removes two of the most common stumbling blocks for first-timers.
The Runtz and Sweet Gelato Auto lineage comes through clearly in a candy-sweet, fruity aroma that fills the grow space as harvest approaches. Expect a smooth, dessert-like profile that leans into sugary fruit rather than earthy or diesel notes.
Under well-optimised conditions indoors, Runtz XL Auto is capable of producing between 450 and 600 g/m2, which is a strong return for an autoflower. Individual plants stay short and compact, so you can fit several into a standard tent and still hit those numbers comfortably.
Sweet Seeds includes a bonus seed in this pack, so you receive four seeds in total despite the listing being priced as a three-seed pack. That extra seed gives you a no-cost opportunity to run an additional plant or keep one in reserve if a grow doesn't go to plan.
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