Refresh Checked Unchecked Menu Search Shopping bag Geolocation Person Facebook Instagram Twitter YouTube Info Icon CBC Icon CBC Shape CBD Icon CBD Shape CBG Icon CBG Shape THC Icon THC Shape THCV Icon THCV Shape Loading…

A guide to buying cannabis seeds

January 14, 2019
The beginning of the new year is a great time to start planning your cannabis garden and get a head start on the outdoor grow season, which roughly runs from March to November. Navigating the cannabis seed market can be challenging when states have different degrees of legality.  This guide will answer your questions on buying seeds so you can be on your way to growing your own cannabis.

To learn more about seeds in general, check out Leafly’s article on cannabis seed basics.

Table of contents

Is it legal to buy marijuana seeds?
How and where do I buy marijuana seeds?
How do I know if I’m getting quality genetics?
What’s the difference between feminized, regular, and autoflower seeds?
How much do marijuana seeds cost?
How many seeds should I buy?

(Courtesy of Erik Nugshots)

Marijuana seeds are considered cannabis products just like flower, edibles, and concentrates. Their legality depends on which state you live in. People living in states with adult-use legalization can buy, produce, and sell seeds within their own state, but seeds can’t cross state lines. People living in states with medical marijuana legalization can only buy seeds if they have a medical card.

Seed banks exist outside of the US and can sell them for “souvenir purposes,” but it is illegal to bring seeds into the US and Customs will seize any cannabis seeds that they find in packages or on a person.

How & where do I buy marijuana seeds?

Many world-renowned seed banks are overseas in the Netherlands, the UK, Spain, and other countries where cannabis laws are less restricted. Seed banks provide seeds from a variety of different breeders.

In states with adult-use legalization, you can buy seeds within your own state, either at a dispensary or through a specific seed company’s website.

Researching cannabis seeds online

Before you purchase seeds online, you’ll need to figure out what strain you want to grow and what breeder you want to buy from.

Because US federal law still prohibits cannabis, it can be hard to find information on seed banks and breeders. Breeders who have a long history and positive reputation are usually a good place to start. To get an idea of what well-established breeders look like, check out:



You can also do some research and find an online grow journal that details the whole growing process of a specific strain from a particular breeder. Through these, you’ll be able to look over another grower’s specific notes and see pictures of the final results.

If you grow some seeds and like the results, try growing another strain from that same breeder and see how it goes.

Shopping at the dispensary

Although this option is only available to people living in states with medical and adult-use legalization, buying seeds at the dispensary is far more straightforward. However, your options are more limited.

Dispensary staff should be able to give you information on the seeds they’re selling, but keep in mind that a lot of dispensaries focus on selling flower and end-products. It’s a good idea to call ahead and talk to staff to see if they are knowledgeable about seeds and can give you specific information on growing.

Get in Touch With a Nearby Dispensary

How do I know if I’m getting quality genetics?

(Sunshine Seeds/iStock)

Breeders talk about “unstable genetics,” meaning that a seed’s origin is unknown. Make sure that when you buy a packet of seeds that it or the breeder who produced them can list where the seeds came from and how they were crossed and/or backcrossed to get the seed that you hold in your hand. If you can’t get a seed’s history, it could be anything and the result of poor breeding practices.

An inexperienced breeder might cross a male and a female one time and sell the resulting seeds as a new hybrid strain, but professional breeders usually put their strains through several rounds of backcrossing to stabilize the genetics and ensure consistent plants that reflect those genetics.


‘Breeding Is an Art Form’: An Interview With Cannabis Cup Champion Exotic Genetix

What’s the difference between regular, feminized, and autoflower seeds?

Regular seeds

If you buy a packet of regular seeds, they’ll come with a mix of males and females. A lot of cultivators prefer to grow these because they haven’t been backcrossed—essentially inbred—as much as feminized or autoflower seeds. You’ll need to sex out the seeds once their reproductive organs show during the flowering phase and discard the males (because they don’t produce buds and will pollenate females, resulting in seeded flowers).

Feminized seeds

Seeds can come feminized, meaning that you can just put them in soil and start growing for buds. These seeds are guaranteed to be bud-producing females, and growing them cuts out the step of having to sex out plants and discard the males.

It also reduces the risk of having a stray male sneak into your crop—just one male can pollinate a huge crop, causing your females to focus their energies on producing seeds instead of buds.

Autoflower seeds

Autoflower plants change from the vegetative to flowering state with age, not the changing of their light cycle. They have a short grow-to-harvest time and can be ready to harvest in as little as 2 ½ to 3 months from when you put the seeds in the ground. The downside is that, typically, they are less potent, but autoflower seeds are great for people who want to grow cannabis but don’t want to spend a lot of time doing it.


Stages of the marijuana plant growth cycle

How much do marijuana seeds cost?

Cannabis seeds usually come in a pack of 10 or 12 seeds and start at around $40 a pack and go up from there. Some high-end genetics can run between $200 to $500 a pack.

Feminized and autoflower seeds will cost more because more breeding work was put in to creating them and they take less time for the grower to get buds.

How many seeds should I buy? Are they all going to survive?


When you grow any amount of seeds, a percentage of them won’t germinate, even if you get them from a reputable breeder. Always count on having a few not germinate or die off, or roughly 2-4 times the total you put in the ground.

When growing regular seeds, some won’t germinate and some will have to be discarded because they’ll turn out to be males. With feminized and autoflower seeds, some won’t germinate, but a higher percentage of them will turn into flowering plants.

If you want six total cannabis plants to harvest for buds, when growing regular seeds, start with about 4 times as many, or 24 seeds. Some won’t germinate and some will turn out to be males, and then you’ll want to discard down to the six best phenotypes. If growing feminized or autoflower seeds, start with about twice as many seeds (about 12) in case a couple don’t germinate, and then discard down to the six best phenotypes.

Make sure to always stay within your state’s legal limit of growing plants.

Pat Goggins's Bio Image

Pat Goggins

Pat Goggins is an editor at Leafly, specializing in cannabis cultivation after working for a commercial grower in Oregon for two years. When not fixing typos, you’ll probably find him on a boat or in the mountains.

View Pat Goggins's articles

  • Nirvana | Info

    The seedbreeders listed above doesn’t ship to USA, I know that nirvana shop does !

    • None of them do so I’m confused myself too. Lol

    • Morrigan

      Yeah, if you can figure out why nothing happens when you hit they “Buy” box….fought with their website for 30 minutes. Not worth it. When I went in with no tracking protection and went to the weed portal, my laptop got such an ugly virus I had to reinstall Windows. Again, not worth it.

  • Then you loose your crop to hermaphrodites.

  • Who is sannies?

  • MobyDick123

    This year I planted 6 seeds that was 10 years old all germinated into healthy plants. So there is no fixed figure how many seeds will germinate regarding the age of the seeds. Store in a cold place and they will have a long life length. The seeds was purposely made from growing quality plants to get rid of the high cost of seeds. And it has worked very fine for me through the years.

  • Lee Johnson

    Buy 24 seeds is more than I make in a month. What do these people think these seeds are gold. The last two times I got seeds to plant nothing germinated. put them in the ground and put water on them. After a week I sfitted them out of the soil nothing. The seeds were still there. I put them in water nothing happened. They didn’t even get soft. The next time I tried same thing. now I want try again. but I can’t be buying seeds that aren’t going to germinate.

    • Zach Chambers

      Did you let the seeds sit in water and sink to the bottom after a few days before planting them?

    • Morrigan

      The seeds won’t get soft, they’ll split open. Try germinating them in damp paper towel in an old cottage cheese tub, or something similar with a lid so the paper towel doesn’t dry out. Sorry yours didn’t sprout this time.

  • Will Vazquez

    make sure you have the best pgpb in freeze dried condition, a little Mycorrhiza ,a little chelated micronutrients . By inoculating your soil and dipping your seeds in your broth you will help your seeds open without using much of its carbs . It will then use those carbs to grow and push out of the soil …….. Will sun & earth microbiology THE FARMACIST p.s spelled with the F

  • Kyle

    For USA buyers cannabis-seeds-usa com is the best.

  • GrowLightSource

    Can cannabis seeds be given away for educational purposes? From California.

  • Igor

    We have a cool Ganjaliveseeds store in the CIS. The seeds are of high quality, all F1 everything comes quickly, a huge selection of the seeds themselves.

  • perry

    Proper use of the English language would be a good start.