Humboldt Seed Org Runtz Fast Feminized Seeds



Cannabis Seeds


Runtz FAST is a shorter-flowering version of Runtz, the renowned Zkittlez / Gelato cross from Cali. that has won so much praise from growers and consumers alike. The ‘FAST’ property comes from the addition of Elite OG Auto genes without imparting the auto-flowering properties usually associated with ruderalis genetics. This is a vigorous and hardy strain but one which enjoys a lower nutrient regime.

Runtz FAST is 70% indica, 20% ruderalis and 10% sativa. Growers can now cultivate Runtz with reduced flowering times.

Indoors, flowering will last for 50 – 53 days with yields in the range 400 – 450 gr/m2. Outdoors in northern latitudes, harvest is due at the end of September with each plant capable of reaching a height of 250 cm. and of producing up to 1000 gr. Colas are long and multi-colored with heavy resin production. Plants are hardy and can withstand a lot of heat and arid conditions. Resin production is such that a wide range of cannabis extract products can be produced.

Scents of black pepper spice and pungent fuel are complemented by sweet ‘n’ sour candy and earthy pine notes.


Breeder/BrandHumboldt Seed Org.
GeneticsRuntz x Uncirculated OG Auto
VarietyMostly Indica
Other FeaturesDense Buds
Flowering TypePhotoperiod
YieldMedium, High
YieldIndoors: 400 – 450 gr/m2; Outdoors: up to 1000 gr/plant
Plant HeightUp to 250 cm. outdoors
GrowsGrows Indoors, Grows Outdoors
Max Flowering Time8 weeks
Flowering Time50 – 53 days
Harvest Monthend September
AromaCandy, Earthy, Fuel

Germination Promise

  • We only stock the best quality seeds from the most trusted breeders
  • Our seeds are stored in safe, temperature-controlled environments
  • Sometimes (but rarely) seeds don’t germinate. If this happens to you, contact us. We will send you a replacement*.
  • We take seed quality very seriously and feed back to suppliers any quality issues
  • All the product information found on this site is correct to the best of our knowledge**.

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