Auto Acid
- THC
- 18–20%
- Seed to harvest
- 10–11 wk
- Terpene
- Limonene
- Effect
- Uplifted
- Difficulty
- Intermediate

Autoflowering strains start to flower on their own after a few weeks, whatever the light schedule, because they carry genetics from Cannabis ruderalis. Most go from seed to harvest in about 8 to 12 weeks and stay small, which makes them popular with first-time and small-space growers. This list includes strains whose listed name marks them as autoflowers.
Our database lists 12 strains here. Most are hybrids (5), followed by indicas (4) and sativas (3). The lead terpene listed most often among them is caryophyllene.
Learn to grow these strains: Indoor & Outdoor Growing Certificate, $199
12 strains
aka Critical Jack Herer
aka Jack
Source: CTU strain dataset (public strain listings and breeder info, checked by CTU), verified Oct 2026. Potency, flavor and effects vary by grower, batch and plant. Facts no source lists are left out.
Copyright Cannabis Training University, a subsidiary of Online Training Providers. © 2026. All Rights Reserved.
Medical Disclaimer: The information on this website is for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment.
Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.
Legal Compliance: Cannabis remains federally illegal. Products and information are intended only for jurisdictions where cannabis use and possession is legal.
By using this site, you affirm that you are of legal age (21+) and responsible for understanding your local laws.
