Cannabis Seeds for Wisconsin Growers

Yes. Cannabis seeds are legally classified as hemp under the 2018 Farm Bill. The seed itself contains no meaningful THC regardless of what the plant would eventually produce, so purchasing seeds — including high-THC feminized varieties — is legal in Wisconsin. Triangle Seeds ships cannabis seeds directly to Wisconsin customers.

Yes. Triangle Seeds ships cannabis seeds to Wisconsin home growers. Orders are packaged discreetly and typically go out within 1-2 business days. Questions about your order? Text or call us M-F, 10-6 EST at (919) 410-6945.

Cannabis plants are either male or female. Only female plants produce the buds (flowers) you're growing for. Feminized seeds are bred to produce female plants almost exclusively, so you're not wasting space, time, or resources on males that need to be removed. All of the seeds we sell are feminized.

Photoperiod varieties flower in response to a change in light schedule. Outdoors, they begin flowering as days shorten in late summer — in southern Wisconsin, that means harvest in late September through early October. Indoors, you trigger flowering by switching to a 12-hours-on/12-hours-off schedule. They give more control over plant size and yield but take longer to finish.

Autoflower varieties flower automatically based on age, finishing 9-12 weeks from seed regardless of light schedule. For licensed hemp growers in northern and central Wisconsin — where fall frosts arrive earlier — autoflowers provide a reliable harvest window well ahead of cold weather. Not sure which is right for you? See our Strain Selection Guide.

CBD (cannabidiol) is a non-psychoactive compound found naturally in the cannabis plant, commonly reported as calming and supportive for sleep, stress, and everyday discomfort — without the high associated with THC. CBD seeds are the primary variety grown commercially under Wisconsin's USDA federal hemp licensing program. Wisconsin's southern and central agricultural regions have a solid outdoor growing season suited to fiber hemp and floral CBD production. Home growers can also purchase seeds now to be ready if Wisconsin legalizes cultivation. Browse our CBD seeds or use the Strain Selection Guide to find the right variety.

No — and the personal-use cultivation penalty in Wisconsin is unusually harsh. Growing four plants or fewer — clearly the personal-use range — is a Class I felony, carrying up to 3.5 years in prison and a $10,000 fine. That is the same penalty level as possession of more than 200 grams. Simple possession of any amount on a first offense is a Class A misdemeanor (up to six months jail, $1,000 fine), but the moment you grow even one plant it becomes a felony. There is no medical cannabis program and no personal use exception. Many Wisconsin residents are purchasing seeds now to be ready if and when that changes. Read the full Wisconsin home grow law breakdown.

No. Wisconsin is the only state in the Midwest with no medical cannabis program of any kind. It is surrounded by states with full adult-use markets — Illinois to the south and Michigan and Minnesota to the north. Governor Tony Evers proposed medical and adult-use legalization in every biennial budget since 2019. Republican-controlled Joint Finance Committees stripped those provisions each time — most recently on May 8, 2025. A Republican medical cannabis bill cleared a Senate committee in fall 2025 but did not receive a floor vote. A 2025 Marquette University Law School poll found 86% of Wisconsin registered voters support medical cannabis legalization.

Two structural factors have blocked reform despite 63% support for adult-use and 86% support for medical cannabis among registered voters. First, Republican leadership controls the legislature and has blocked cannabis bills at every stage — from committee to floor vote. The internal GOP conflict has been particularly stubborn: Assembly Speaker Robin Vos supports a state-run dispensary model for medical cannabis, while former Senate Majority Leader LeMahieu called that approach a nonstarter. Second, Wisconsin is one of 24 states without a citizen initiative process — voters cannot place cannabis reform directly on the ballot. Governor Evers proposed adding an initiative process in his 2025 budget; Republican lawmakers removed that provision too.

Partially — at the local level only. Milwaukee, Madison, Dane County, Eau Claire, Green Bay, Kenosha, Appleton, and several other cities have passed local ordinances reducing possession of small amounts to a civil citation with a fine rather than a criminal charge. However, Wisconsin state law still classifies any amount of possession as a criminal Class A misdemeanor on a first offense. Local ordinances do not override state law — state police and county deputies can still charge under state statutes regardless of local policy. Local decriminalization affects enforcement priority, not legal exposure under state law.

Wisconsin's state hemp program ended on January 1, 2022. All Wisconsin hemp producers now apply through the USDA Domestic Hemp Production Program using the Hemp eManagement Platform (HeMP) at hemp.ams.usda.gov — the same system used by Kansas, Mississippi, Nebraska, New Hampshire, and Utah growers. The USDA does not charge a license fee, and federal licenses are valid for three years. Wisconsin growers must complete an FBI Identity History Summary background check and register grow sites with their local USDA Farm Service Agency (FSA) office. See the full Wisconsin hemp licensing walkthrough for step-by-step details.

The USDA does not charge a license fee — making Wisconsin one of the most cost-accessible states for hemp licensing entry. The primary costs are a USDA-certified sampling agent for pre-harvest compliance samples and a DEA-registered testing laboratory to analyze them, both paid directly with costs varying by acreage and lab. An FBI fingerprint background check is required at application and at the three-year renewal.

Wisconsin spans USDA zones 3b through 6b. The northern counties near Lake Superior fall in zones 3b and 4a. The central part of the state sits in zones 4b and 5a. The Madison and Milwaukee areas in the south reach zones 5b and 6a, with the far southern counties bordering Illinois touching zone 6b. The outdoor growing season runs from late May through early to mid-October in the south and is noticeably shorter in the north. Wisconsin's rich agricultural soils in the south and central regions are well-suited to outdoor hemp production — the state had hundreds of licensed growers during its pilot program years from 2018 through 2021. Photoperiod varieties finish in late September through early October in southern Wisconsin. In the central and northern counties, autoflowers and short-season strains are the safer choice to ensure harvest before fall frosts. Enter your zip code on our zone map for your specific window, then browse our full-season varieties, short-season varieties, or autoflowering varieties.

In southern Wisconsin near Madison and Milwaukee (zones 5b-6b), start seeds indoors in mid-April and transplant outdoors after your last frost — typically mid-to-late May. Photoperiod varieties started in May will flower in late August and finish in late September through early October. In central Wisconsin (zones 4b-5a), target a late May transplant and lean toward autoflowers or short-season strains to finish before October frosts. In the northern counties near Lake Superior (zones 3b-4a), last frost can extend into early June — rely exclusively on autoflowers and plan a June transplant. Check your zip code on our outdoor planting tool for your exact dates, or see our germination guide for step-by-step starting instructions.