Description
Humboldt Seed Organization's Runtz FAST Feminised is the product of crossing the beloved Runtz with an Uncirculated OG Auto, a pairing that preserves the candy-forward sweetness and potent character of the Runtz lineage while pulling in early-finishing genetics that shorten the wait without sacrificing expression. THC lands in the high range of 16 to 24%, and the effects carry that familiar Runtz signature: a warm, enveloping quality that settles in gradually and holds steady.
As a feminised, early-fast variety, this strain is purpose-built for cultivators who want reliable, resinous harvests on a tighter timeline than a standard photoperiod allows. The fast-flowering trait makes it a natural fit for outdoor growers in cooler climates with a narrower harvest window, and for indoor growers looking to run more cycles per year without stepping into full autoflower territory. Every seed is feminised, so each plant in your space is a productive one. If you value the Runtz profile but have always wished it finished sooner, this is a logical and well-bred answer.
Runtz FAST Feminised Seeds
Description:
A fast-finishing feminised Runtz from Humboldt Seed Organization, delivering the candy-sweet genetics of the original with the accelerated flowering of an OG Auto cross, built for growers who refuse to compromise on quality or timing.
Best For
Beginner growers seeking a balanced, euphoric high
- Type
- Feminised – Early/fast
- Genetics
- Runtz x Uncirculated OG Auto
- THC / CBD
- High THC (16-24%) / Low CBD (0-1%)
- Effects
- Relaxing,Uplifting
- Flavour / Aroma
- Fruity,Gassy,Sweet
- Height
- Medium
- Yield
- Average Yield (200-450gr/plant) / Average Yield (350-450gr/m2)
- Flowering Time
- 5 to 7 weeks
- Difficulty
- Easy
FAQ
All you need to know
about this product
Runtz FAST delivers Humboldt's candy-sweet genetics and high THC in just five to seven weeks, everything you need to harvest quality without the wait.
It's genuinely one of the more forgiving options on the market, rated easy by Humboldt Seed Organization and specifically suited to beginner growers. The feminised format removes the need to identify and pull male plants, and the straightforward growth pattern means less hands-on management throughout the cycle.
Runtz FAST is not an autoflower; it's a feminised early/fast variety bred by crossing Runtz with an Uncirculated OG Auto to capture the accelerated flowering trait without fully converting to auto genetics. That means it still responds to light cycle changes like a photoperiod plant, but finishes in a notably shorter five to seven weeks rather than the typical nine to ten.
The Runtz lineage comes through clearly here — expect fruity, candy-sweet aromas underpinned by a gassy, fuel-like depth that keeps it from tipping into one-note sweetness. Effects sit in the relaxing and uplifting range with THC between 16 and 24%, producing a warm, gradual onset that holds steady rather than peaking sharply.
Indoor growers can expect around 350 to 450 grams per square metre under optimised conditions, which puts it firmly in the average-yield category for a fast-finishing variety. Five seeds gives you enough to run a small dedicated canopy or test different training methods side by side while keeping the investment manageable.
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