10 Interesting Facts About Cannabis Seeds
Cannabis seeds are the very essence of our mission, not just part of our company name. We love them, we’re fascinated by them, and we want to share our knowledge with you! Here are ten facts about cannabis seeds that every ‘cannasseur’ should know.
Cannabis seeds may all look pretty much the same, but within those brown, speckled hulls, the potential for infinite variety is captured. From industrial hemp to carefully refined sativas, from the latest autoflowering strains to the oldest cannabis seeds yet found, it all starts from a seed! Here we present ten interesting facts about cannabis seeds for you to enjoy and share.
1. All cannabis seeds look the same
There is no visible difference between regular cannabis seeds, feminized cannabis seeds, autoflowering cannabis seeds, and seeds for growing industrial hemp plants. For this reason, always buy your cannabis seeds from a reputable seed bank (such as Sensi Seeds and White Label Seed Company) so that you definitely know what you’re getting.
2. Cannabis seeds are edible
You can eat cannabis seeds, and they’re good for you! Cannabis sativa L. seeds are a great source of protein, and contain a near-perfect balance of the essential fatty acids (EFA) omega 3, 6 and 9. These are vital to human health and cannot be produced by the body. It is better to eat hemp seeds than cannabis seeds as the former are a lot cheaper! There is no difference in the EFA content of the seeds – just the THC content of the plants they produce. Cannabis seeds do not contain THC (tetrahydrocannabinol) or any other psychoactive substance.
3. A single cannabis plant can produce hundreds of seeds
A single cannabis plant can produce hundreds of cannabis seeds – even over a thousand! – depending on its size and the efficiency of pollination. Some hemp strains are bred to enhance seed production for when seeds are the primary crop – for example, for use as a food source.
Weed seeds may be legal to ship across the US, DEA says
Cannabis commercial and home growers alike may be able to get their seeds from all over the country now, and not have to worry about breaking federal law. Before, because of federal illegality, cannabis seeds have been restricted to the state in which they were produced, so a strain bred and grown in one state, legally, could not go beyond that state’s boundaries.
A recent legal clarification by the federal Drug Enforcement Administration (DEA) could mean that the seeds of cannabis strains popular in one part of the country could legally be shipped to another part of the country, because the DEA considers all forms of cannabis seeds to be federally legal hemp.
That means strains popular in mature markets like Washington, Oregon, and California could make their way to legal markets on the East Coast in Massachusetts and Maine, and soon-to-open markets like New Jersey and New York.
Marijuana Moment reporter Kyle Jaeger recently unearthed a letter from DEA officials that clarifies the definition of cannabis seeds, clones, and tissue cultures, which could open up a whole range of possibilities for cannabis growers, and could spread a diversity of strains across legal markets all over the country, opening up the gene pool and leading to new trends and tastes in weed.
Are weed seeds illegal?
Right now, cannabis strains are somewhat isolated in the regions they are bred and created, as they can’t be transported beyond state lines. For example, even though recreational weed is legal at the state level in both California and Oregon, moving a plant from one of those states to the other is illegal at the federal level. This forces cannabis growers and breeders to operate within the confines of a specific state.
That’s not to say that a strain bred in California won’t end up in Oregon—it happens all the time, but it is technically illegal, according to federal law.
Many cannabis breeders and seed banks sell seeds throughout the US, but they operate in a legal gray area. Typically, seed producers say their seeds are sold for “novelty” or “souvenir” purposes, giving them a loophole to skirt the law.
If cannabis seeds are found in the mail, they could be seized and the sender or receiver arrested, however, the fact of the matter is that seeds are very difficult to detect. Cannabis seeds are usually less than a ¼” in diameter and don’t smell like weed. A packet of 10 seeds is about the size of four quarters stacked.
But all that might have changed in 2018 without anyone knowing.
Defining ‘source’ vs. ‘material’
In 2018, Congress passed a farm bill that legalized hemp in the US. It defined “hemp” as any cannabis plant with less than 0.3% THC. This allows hemp to be grown and used for industrial purposes—for creating textiles and materials. The 2018 bill also opened up hemp production for the creation of cannabinoids other than delta-9 THC, such as CBD, delta-8, and others.
Because CBD and delta-8 products are usually extracted from hemp plants, that is, cannabis plants containing less than 0.3% THC, they can be found in states that don’t have legal, recreational cannabis.
In November, Shane Pennington, counsel at Vicente Sederberg LLP in New York, wrote to DEA officials asking for clarification of the definition of a cannabis seed, clone, and tissue culture.
Cannabis seeds have always been deemed illegal because they come from plants that are high in THC. The source of the seeds is above 0.3% THC, and therefore anything that comes from those plants, such as seeds, has also been considered illegal cannabis.
Pennington argued that the source of the material doesn’t determine legality, but the material itself—meaning that because a cannabis seed itself contains less than 0.3% THC, it should be classified as hemp. If seeds are hemp, they are not a controlled substance—and are therefore federally legal.
“When it comes to determining whether a particular cannabis-related substance is federally legal ‘hemp’ or schedule I “marihuana,” it is the substance itself that matters—not its source,” Pennington wrote in a blog post.
Exotic Genetix Mike, founder of cannabis producer Exotic Genetix, said the DEA’s ruling “Is what we’ve always kind of practiced. [Seeds contain] less than 0.3% THC—they’re not a controlled substance.”
Mike welcomed the news: “It’s been clarified. Not just what we do is legal, but the money we make for doing it is also legal and not an illegal enterprise.”
What implications does this have for the weed industry?
If the DEA and federal government allow seeds to cross state lines, adults could grow and consume seeds and strains from all over the country in their own state. Certain strains would no longer be confined to a specific region, but could be enjoyed all across the nation.
“It’ll spark innovation, if people can bring it above ground, it can be regulated,” said Pennington in an interview with Leafly.
Regulation can bring more investment, a bigger industry, and more acceptance of the plant.
Breaking down transportation barriers across states would also open up the cannabis gene pool, giving breeders a bigger diversity of strains to work with. The number and diversity of new strains would likely increase, tapping into new consumer trends and flavors.
More strains also means that certain strains could be pinpointed and bred specifically for certain effects, whether for medical or recreational purposes.
But according to Pennington, perhaps the biggest implication is that “This sends a signal, clearly, to state legislators, state regulators, and to groups that lobby those folks… the federal law is more flexible than you assumed.”
States take their cue from the DEA when creating their own drug laws, so seeing the agency relax its stance on shipping cannabis genetics could cause states to follow suit, breaking down protectionist state laws.
This could also open up more accurate research on the plant, according to Pennington. For decades, cannabis research was limited to The University of Mississippi, which grew weed with a low potency, around 8% THC. However, most dispensaries sell cannabis with a THC percentage around 20%. Being able to ship genetics across the country would allow for more robust research into the plant, using strains that mirror what adults are actually buying in stores and consuming.
How binding is the DEA letter?
The DEA calls the letter an “official determination,” but whether or not they are legally bound to this position is a bit hazy.
“That to me sure seems like something the agency would either be bound to going forward or at least be very hesitant to deviate from in any kind of enforcement context,” said Pennington.
For now, the DEA’s acknowledgment that cannabis seeds, clones, and tissue cultures are not controlled substances isn’t law, but it is a big step forward in relaxing restrictions on cannabis.
Cannabis seeds are ready to plant and grow once they successfully germinate or once the root has broken through the protective outer shell of the seed. Cannabis seeds are available in regular, feminized, and auto-flowering forms. Home growers of cannabis often choose feminized seeds to ensure that the adult plant will be a flowering female.
Cannabis seeds are brown and about the size of a peppercorn. Photo by: Gina Coleman/Weedmaps
More about marijuana seeds
As with all angiosperms, or flowering plants, cannabis produces seeds that contain all of the genetic information needed for growth and reproduction. When a seed is planted, the translation of this genetic material dictates each unique physical characteristic the mature plant will have. If these are desirable traits, like potency, smell, vigor, etc., a breeder can select for these through a long process of genetic stabilization through generations, which eventually leads to the creation of a cultivar, or strain.
Anatomy of a cannabis seed
Cannabis seeds are about the size of a peppercorn, ovular in form, and pointed on each end with a ridge that transverses longitudinally on only one side from tip to tip. It is this ridge that opens up during germination. The opposite side is rounded. The body of the seed is brown, but underdeveloped and unfertilized seeds can have an off-white color and are typically smaller in size.
Photo by: Illustration by Weedmaps
The body of a marijuana seed is spotted or striped, most commonly with light brown specks, but some varieties of cannabis can have red or yellow markings. Plant embryos are contained within seeds and house all cells that will eventually differentiate into leaves, roots, and stems. Embryos, found within the reproductive organs, are protected by an outer envelope called the pericarp. Crucial components of the plant embryo are the cotyledons, the first leaves to appear from the seed, and the radicle, which develops into the primary root. Once the seed germinates and begins its growth into a mature plant, special structures called root caps protect the growing tips of the plant.
Today’s commercially cultivated cannabis does not contain seeds. The cultivation practices that have made this widespread are rooted in fundamental biological concepts. Cannabis is a dioecious plant, meaning it has separate male and female organisms, just like humans. If a female plant matures in the presence of a male plant, pollen from the male will fertilize the female, and its bracts will contain seeds at the end of the flowering cycle. Seedless cannabis is commonplace even when it originates from mass-produced outdoor cultivation, but not too long ago, this was not the case.
Around the middle of the 20th century, growers discovered that culling male plants as soon as they display their sexed traits would result in a crop containing exclusively unfertilized females, yielding cannabis flowers higher in THC that don’t require the removal of seeds before smoking. This seedless cannabis was from then on dubbed sinsemilla, which translates to “without seed” in Spanish. It is also commonly spelled sensimilla.
How cannabis seeds are produced
Commercial growers who produce cannabis flower desire seedless plants but there are also cultivators interested in selling seed to the growing home-cultivation market. Cannabis seed production begins with the pollen grain of a male plant. From this grain, a pollen tube grows, producing male generative cells that disperse in the form of pollen. The migration of pollen into a female plant ovule triggers pistils to fall off and seed production to begin. The bracts, which contain the ovule, will then fill with seeds. Since seeded plants are a natural outcome of pollen fertilizing eggs, producing cannabis seeds is a matter of letting nature take its course.
What’s the difference between feminized, regular, and autoflower seeds?
There are a few differences to note between these cannabis seed types.
- Feminized seeds: The key difference between feminized cannabis seeds and regular cannabis seeds is that feminized seeds have been engineered to produce exclusively female plants. This matters for cultivation since smokable flowers are produced only by female plants. A male plant can potentially ruin a harvest if it pollinates nearby female plants, causing them to produce flowers full of seeds.
- Autoflowering seeds: Autoflowering seeds have been carefully bred to begin and complete the flowering process based on the plant’s maturity rather than how much light the plant receives each day. Autoflowering seeds tend to be simpler to grow and don’t require as much light, making them perfect for places where the growing season is short or for indoor grows.
Is it illegal to buy marijuana seeds?
Marijuana seeds are a cannabis product, so if you live in a place where cannabis is illegal, then seeds are also illegal. However, some people who live in places where weed is not yet legal purchase marijuana seeds from marijuana seed banks as a “souvenir.” Either way, if you want to buy marijuana seeds and cannabis is illegal where you live, then you face some degree of risk. On the other hand, if you live in a state where cannabis is legal, especially one where home cultivation is allowed, then you should be able to purchase seeds legally. Remember, even in states where cannabis is legal, it’s still illegal nationally in the US. To cut your risk as much as possible, purchase cannabis seeds from in-state or local providers so they don’t have to cross state lines or be transported by mail.
Where to buy marijuana seeds
Seeds are sold in brick-and-mortar locations legally in many countries across Europe and are often traded online. As cannabis legalization expands in North America, more retail locations are carrying seeds as well. Feminized seeds are the most popular, but providers likely have access to many strains of mixed male and female seeds. Carefully sifting through cannabis flower before using the grinder will usually turn up a few seeds, too. Professionally sourced seeds assure quality genetics and viability, but saved seeds can be a cheap source of cannabis genetics for the hobbyist grower.
Do dispensaries sell seeds?
If you live in a state or country where cannabis is legal, and where individuals are allowed to grow their own plants at home, then you should be able to buy seeds at most legal dispensaries. This might not be the case if you’re in a location that does not allow home growing. The best thing to do is simply check your local laws and ask your local budtender.
How much do marijuana seeds cost?
A pack of marijuana seeds—typically containing around ten or so seeds—will run you anywhere from around $40 on the low end and as much as $400 or $500 on the upper end. The price of marijuana seeds depends on a number of variables including:
- Quality of genetics
- The reputation of the breeder who produced the seeds
- How rare or potent the strain is
- Whether they’re regular, feminized, or autoflowering (feminized and autoflowering marijuana seeds tend to cost more)
How many seeds should I buy?
If you’re trying to grow just a handful of plants for your own private consumption, then you can get away with purchasing one or two packs at a time. Since most commercially sold marijuana seeds come in packages of 10 or so seeds, 10 to 20 seeds should be enough to ensure a good harvest even if a few seeds fail. This is a baseline for a small, private crop andany larger operations should scale up accordingly.
How to store cannabis seeds
Seed providers sometimes vacuum-seal and freeze seeds for long-term storage, but commercially-available seeds in Dutch headshops are sold in small, plastic vials at room temperature and low humidity (6-12%).
Humidity and light is the main enemy of seed storage. Beyond that, seeds can remain viable for up to two years when stored in even the most haphazard conditions. Marijuana seeds swept up off the floor or found in the bottom of a drawer have been known to grow into vigorous young plants.
Germinating cannabis seeds
Germination is the process of beginning the vegetative growth of the new cannabis plant. Sometimes referred to colloquially as “popping,” this process starts when the seed is exposed to water and light. The seed abandons its state of dormancy, or quiescence, and resumes essential metabolic processes that feed on energy stores to delicately rupture open the shell and grow its first root. This root will elongate until it has taken hold of the medium, after which it will pull two small embryonic leaves (cotyledons) from the seed shell. Cotyledons are in the seed before germination and are not considered “true” leaves. The cotyledons will grow until they are about one centimeter long, and once the stem below this is around five centimeters tall, another set up true leaves will grow out of the top and the stem between the true leaves and cotyledons will continue to elongate.
Photo by: Gina Coleman/Weedmaps
Generally speaking, cannabis is a hardy plant that will grow and even thrive in a diversity of environments. However, to assure germination, several steps can be taken. One method calls for a moist paper towel inserted into a plastic bag. Once the first root appears, the seedling must be carefully transferred to some soil before the root takes hold to the paper towel.
Cannabis seeds can also be germinated in a peat pellet. Plant the seed only just below the surface. Once the seedling has taken hold in the pellet, directly transfer it to a pot; the roots will grow right through the soft fabric that encases the peat, at which point the pellet can be directly placed into soil. Whichever method is used, keep the temperature between 70 -90 degrees Fahrenheit (21-32 degrees Celsius), ideally at 78 degrees Fahrenheit (about 26 degrees Celsius), keeping seedlings covered to maintain humidity. Seedlings and young cuttings require photosynthetically active radiation that is more heavily weighted in the blue portion spectrum; a common fluorescent desk lamp will suffice until they are about 5 inches, or about 13 centimeters, tall.