Whether you are growing for CBD oil, grain, or fiber, you must plant approved hemp varieties. For grain or fiber, approved varieties are on either the current Health Canada List of Approved Varieties or the current Organization for Economic Cooperation and Development List of Varieties Eligible for Seed Certification. For CBD and CBG, the Department of Agriculture, Trade and Consumer Protection has a list of approved varieties.
If you want to plant other varieties, you can send a request before planting to DATCPIndustrialHemp@Wisconsin.gov, and provide documentation that the variety has tested at 0.3 percent THC or below in another state's pilot program.
Regardless of documentation provided or approval given, all hemp grown in Wisconsin must test at or below 0.3 percent THC in the Department of Agriculture, Trade and Consumer Protection's laboratory or be destroyed.
For 2020, the C4 variety is prohibited from being grown in Wisconsin, based on 2018 regulatory test results.
Seed and Transplant Sources
Please carefully research your supplier before buying hemp seed or transplants. Remember that any lot testing over 0.3 percent total delta-9 THC on the pre-harvest regulatory test must be destroyed. There are many reputable distributors of hemp seeds and clones, and many varieties that produce at or below the 0.3 percent level. Seedling or clones sold or transfered in Wisconsin must originate from hemp lawfully produced under a hemp research pilot program, a U.S. Department of Agriculture (USDA) hemp producer license, or a state or tribal plan approved by USDA.
Wisconsin requires anyone selling seed in Wisconsin to be a licensed seed labeler, and anyone selling clones to be a licensed hemp grower. While there is no penalty for buying seed from unlicensed sources, buying from a DATCP-licensed seed source does offer another layer of protection. View a list of Wisconsin-licensed seed sources. If you are a licensed seed-labeler, contact the hemp program at (608) 224-4596 or email@example.com.
Importing seeds from other states: Hemp seed and clones are available for sale from seed suppliers in other states. It is fully legal to move seeds and clones across state lines. You may also find seed sources on other states' hemp websites.
Importing seeds from other nations: The federal U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) regulates the importation of all plants and seeds for planting to ensure safe agricultural trade. For questions or requests for information regarding importing hemp plants or seeds into the U.S. contact:
USDA APHIS Plant Protection and Quarantine’s Permit Services
Phone: toll-free (877) 770-5990
Growing and Selling Hemp for Seed
Growers who want to cultivate foundation, registered or certified hemp seed for certified seed production in Wisconsin must:
Seed SavingSelling Seed
Certified seed harvested from a pilot project cannot be sold for propagation, except under the Wisconsin Crop Improvement Association’s seed certification program. Otherwise, the harvested grain can be used only for processing or the grower's own hemp production. Although we don't recommend planting non-certified seed, seed harvested from non-certified varieties may be saved, distributed and sold. Seed labeling and licensing rules apply (see below).
What Variety of Hemp Should I Grow?
Importing Hemp Seeds
List of approved CBD and CBG varieties
Approved Varieties: Grain and Fiber
Organization for Economic Cooperation and Development List of Varieties Eligible for Seed Certification
Health Canada List of Approved Varieties
Seed Certification Information
What is certified seed?
Wisconsin Crop Improvement Association
Certified seed standards
Federal seed act definitions
Seed and Clone Sources
Seed and transplant sources
Websites for other states
American Seed Trade Association Information
How to Read a Label on a Bag of Hemp Seed
Laws, Regs and Other Considerations In Buying Seed
Best Management Practices for Hemp Seed Production