Quick answer
Five autoflower seed banks to check first: Mephisto Genetics, Fast Buds, Royal Queen Seeds, Sensi Seeds, and Seedsman. Confirm your state law before you order. Viable cannabis seeds remain regulated in some US states. Hemp seeds with 0.3% THC or less fall under the 2018 Farm Bill. Autoflower seeds from high-THC cultivars fall outside that hemp definition.
Cheap Autoflower Seeds Online: Buying Guide for US Growers
What autoflower means
Autoflower cannabis carries ruderalis genetics. The plant moves from vegetative growth to flower on a clock, not on light hours. Growers can run 18 to 24 hours of light from seed to harvest. Flower time runs 60 to 90 days for many lines. Yield and potency vary by cultivar.
autoflower cannabis seeds feminized
Selection criteria
- US shipping page with stated states or regions.
- Payment method that works for US buyers.
- Seed storage and germination notes.
- Breeder name and generation listed.
- Refund or replacement policy in writing.
- Lab data or THC range when posted.
Seed banks to check
Mephisto Genetics. Runs a US store. Lists autoflower lines and breeder packs. Product pages list generation and flower time. Check stock drops.
how long do autoflower seeds take to grow
Fast Buds. Lists autoflower seeds by strain. Ships from multiple regions. Product pages list THC range and flower time. Confirm US shipping terms at checkout.
how long do autoflower seeds take to grow
Royal Queen Seeds. Lists autoflower seeds and a US shipping page. Product pages list yield and flower time. Payment options change by region.
Sensi Seeds. Lists autoflower seeds. Ships from Europe. US delivery terms and payment options need a checkout check.
Seedsman. Acts as a marketplace for multiple breeders. Lists autoflower filters. US buyers should confirm payment and delivery terms before order.
Legal notes for US buyers
Federal hemp law covers Cannabis sativa L. with delta-9 THC at or below 0.3% on a dry weight basis. Autoflower seeds from drug-type cultivars do not meet that limit. State law governs possession and germination. Some states allow seeds for licensed growers only. Some states ban seeds outright. Seed banks set their own shipping rules. A seed bank listing does not make an order legal in your state.
Order checklist
- Read your state cannabis seed law.
- Confirm the seed bank ships to your state.
- Check payment method and fees.
- Save the order confirmation.
- Read germination and refund terms.
- Store seeds cool and dark.