Why "now" is a real deadline
This isn't manufactured urgency. Under the new federal hemp definition, viable seeds from plants above 0.3% total THC stop counting as hemp on December 11, 2026. Hemp status is what has let seed banks legally sell and mail seeds for high-THC strains, confirmed by the DEA in 2022. Congress could still delay the change again, but as of October 18 nothing has passed, so plan around December 11. Here's how the seed banks themselves are responding:
- Multiverse Beans called 2026 its "Final Season" in April and said it would shut down around November 13. That was written before the delay to December 11. Its homepage now warns that seeds become federally illegal to ship in 60 days.
- Industry coverage expects interstate seed sales to stop, with in-state sales continuing only in legal states.
- No last-order dates had been posted by the seed banks we checked as of October 18. Orders placed close to the deadline risk arriving late, or not shipping at all.
The full legal background is in are cannabis seeds legal after December 11?
Step 1: Check that home growing is legal where you live
Seeds were federally legal to buy, but germinating them is cultivation. Growing high-THC cannabis has always been federally illegal, and only state law can make it legal where you live. Here are the 24 adult-use states. Limits come from the Marijuana Policy Project's state review, with New York corrected from its regulator's own FAQ, which shows home grow allowed since June 2024. Always confirm with your state before planting.
| State | Adult home grow | Limit |
|---|---|---|
| Alaska | Yes | 6 plants (3 mature) per adult; 12 per household |
| Arizona | Yes | 6 per adult; 12 per household; primary residence |
| California | Yes | 6 per household |
| Colorado | Yes | 6 per person (3 flowering); 12 per residence unless local rules differ |
| Connecticut | Yes | 3 mature + 3 immature per adult; 12 per household |
| Delaware | No | Home cultivation not allowed |
| Illinois | Patients only | Adults: not allowed |
| Maine | Yes | 3 flowering, 12 immature, unlimited seedlings |
| Maryland | Yes | 2 plants per household, however many adults; out of public view |
| Massachusetts | Yes* | 6 per adult; 12 per household. *Question 8 on the Nov 3 ballot would end home cultivation |
| Michigan | Yes | 12 per household |
| Minnesota | Yes | 8 per residence (4 flowering); enclosed, locked space |
| Missouri | Yes, with registration | 6 mature plants; state cultivation card required |
| Montana | Yes | 2 mature + 2 seedlings |
| Nevada | Limited | Only 25+ miles from a store; 6 per adult, 12 per household |
| New Jersey | No | Home cultivation still banned (bills pending) |
| New Mexico | Yes | 6 mature + 6 immature per adult; 12 mature per household |
| New York | Yes | 3 mature + 3 immature per adult; 6 + 6 per residence |
| Ohio | Yes | 6 per adult; 12 per household |
| Oregon | Yes | 4 plants per residence |
| Rhode Island | Yes | 3 mature + 3 immature per residence |
| Vermont | Yes | 2 mature + 4 immature per residence |
| Virginia | Yes | 4 plants per household |
| Washington | Patients only | Adults: not allowed (2026 bill died) |
Some medical states let registered patients grow. Oklahoma, for example, allows 6 mature plants and 6 seedlings per licensed patient. In states with no legal home cultivation, growing remains illegal under state law no matter when the seeds were bought.
Step 2: Decide what kind of seeds you need
Feminized
- Bred to produce female plants, the ones that make flower.
- Oregon State Extension explains they're made by inducing female plants to produce pollen.
- Costs more per seed; fewest wasted plants.
Autoflowering
- Day-neutral: they flower on age, not on day length.
- Cornell research links the trait to a recessive allele at a single locus (Autoflower1).
- Good for small spaces and quick harvests. Not every "auto" seed lot is true to type.
Regular
- Roughly 30–50% male plants, per Oregon State Extension.
- Males are the straightforward way to make your own seeds.
- Lets you keep a line going without buying seeds again.
Thinking long-term? If buying stops being easy, making your own seeds is one way to keep growing a favorite strain, and regular (male and female) seeds are the simplest way to do it. Any mother plant you keep counts toward your state's plant limit. A few packs of regulars alongside your feminized or autoflower seeds keeps that option open.
Step 3: Work out how many
Start from your state's plant limit and how often you'll grow, then add a buffer for seeds that don't sprout:
- Plants per grow: your legal limit, or fewer.
- Grows per year: outdoor is usually one season. Indoor autoflowers can run several cycles.
- Years you're planning for: be realistic. Seeds age, and your plans change.
- Germination buffer: University of Illinois Extension suggests sowing more heavily when a germination test comes back at 70–90%.
Multiply it out, and don't buy far beyond it. Stockpiling more than you can legally grow doesn't help you. Under federal law the seeds aren't hemp after December 11, whenever you bought them.
Step 4: Where to buy before the deadline
These are the seed banks we link to. Each sells to US customers and has a germination guarantee as of October 18, 2026. Terms are each company's own, so read them before you order. We compare them in detail in our seed bank germination guarantees comparison, publishing this week.
New to growing? Our best seeds for beginners and indoor growing guide help you choose.
Step 5: Store them so they last
Seeds you can't germinate are worth nothing. Research on hemp seed found germination held steady for 36 months when the seeds were kept dry and cold. The short version: keep them dry, cold, sealed and dark. Let the container warm to room temperature before you open it. We cover the full method, with sources, in our seed storage guide, publishing this week.
What not to do
- Don't buy seeds to grow in a state where home growing is illegal. State law was the barrier before, and it still is.
- Don't plan on buying or carrying seeds across state lines after December 11. Interstate shipment or transport of excluded seeds is expected to be federally illegal.
- Don't resell or mail seeds to friends after the deadline. That's distribution, which is the activity federal law treats most seriously.
- Don't wait for the last week. No seed bank has posted a cutoff date, and orders placed in the final days may not ship before the deadline.
Frequently asked questions
Should I buy cannabis seeds before December 11, 2026?
If you live in a state where home growing is legal and you plan to grow, buying before December 11 avoids the expected end of interstate seed shipping. Buy only what you'll grow within your state's limits and can store properly.
Which states allow growing cannabis at home?
Most adult-use states do, with plant limits. Delaware and New Jersey don't, and Illinois and Washington allow it only for registered patients. Some medical states, such as Oklahoma, allow patient home grows. Check your state's current rules before planting.
Feminized, autoflower or regular seeds?
Feminized seeds give mostly female, flowering plants. Autoflowers flower based on age instead of day length and finish fast. Regular seeds give a mix of males and females, which you need if you want to breed your own seeds later.
Are seeds I buy now legal to keep after December 11?
Not under federal law. Starting December 11, high-THC viable seeds are no longer hemp, no matter when you bought them, and the law has no grandfather clause. Federally they're treated as marijuana, a Schedule I controlled substance. State law is separate: in states that allow home cultivation, keeping and growing them within state limits stays legal under state law, but that doesn't change their federal status. Federal prosecutors have historically not prioritized small-scale activity that follows state law. That's a pattern, not a legal protection.
When do seed banks stop shipping to the US?
None of the seed banks we checked had posted a last-order date as of October 18, 2026. In April, before the delay, Multiverse Beans said it would shut down around November 13, 2026; its homepage now counts down 60 days. Don't wait until the final week.
Sources
- 7 U.S. Code § 1639o — Definitions (hemp), Cornell LII
- Public Law 119-103 (H.R. 6500), approved Sep 2, 2026, Div. B Sec. 2019 — govinfo
- Multiverse Beans, "Congress is stealing your seed-buying rights" (Apr 2, 2026)
- Multiverse Beans homepage (viewed Oct 18, 2026)
- MJBizDaily, why the federal hemp ban threatens cannabis seed banks
- Marijuana Policy Project, review of state laws to regulate marijuana (home cultivation)
- New York Office of Cannabis Management, home cultivation FAQs
- Washington State Legislature, SB 6204 (2025-26) bill summary
- MPP blog, New Jersey lawmakers can finally allow home grow (Feb 11, 2026)
- Oklahoma Statutes, 63 O.S. § 420 (Justia)
- NORML, 2026 election ballot measures
- Oregon State University Extension, EM 9279 "Hemp sex-ed"
- Toth et al. 2022 (Cornell), autoflowering in Cannabis sativa, Frontiers in Plant Science 13
- University of Illinois Extension, are my seeds still good? Testing germination (2023)
- Parihar et al. 2014, hemp seed storage, Indian Journal of Agricultural Sciences 84(11)
- ILGM homepage (viewed Oct 18, 2026)
- North Atlantic Seed Co. homepage (viewed Oct 18, 2026)
- North Atlantic Seed Co., refund and replacement policy
- Harris Sliwoski, hemp genetics and the new definition (Nov 17, 2025)
- Colorado Association of Realtors, HB17-1220 residential plant limit (2017)
- Maryland Cannabis Administration, home grow guidance
- Minnesota Office of Cannabis Management, home grow
Not legal advice. This page explains publicly available law and reporting in plain language. Laws and enforcement can change quickly and vary by state and city. For decisions about a business, a job, travel or a pending charge, talk to a licensed attorney in your state.