Cannabis Seeds: Germination, Genetics and Storage
Every cannabis plant starts as a seed, and the seed decides more than most people realise: the sex of the plant, how it reacts to light, how large it grows, and the balance of cannabinoids and terpenes it can produce. Choosing well at this stage saves months of lost effort later. The market has expanded enormously, and https://budweedseeds.com now carries 400 strains from breeders across the industry. This guide explains the main seed types, how to read a strain description, what distinguishes a good seed from a poor one, and how to store and start them correctly.
What You Are Actually Buying
A cannabis seed is a small, hard embryo enclosed in a protective coat. Viable seeds are typically brown, grey or mottled, firm to the touch and slightly glossy. Inside sits everything the plant needs to begin: a root tip, two cotyledon leaves and a reserve of energy to fuel the first days of growth.
Genetically, each seed is a one-off combination of its two parents, and that is why two seeds from the same pack can grow noticeably different. Breeders narrow that variation by working a line over many generations, but some range is expected in any seed-grown crop. Clones are the only way to get identical copies; seeds exchange that certainty for vigour, a strong taproot and the chance of a standout plant.
The First Decision: Seed Type
Almost every seed on sale falls into one of three categories, and the choice between them is the first decision a buyer makes.
- Feminized seeds are bred to produce female plants very nearly every time. For anyone growing for flower rather than for breeding, they remove the guesswork and the wasted space of male plants.
- Regular seeds give male and female plants in about equal numbers. They are preferred by breeders and by growers who want to produce their own seeds, though they require identifying and removing males before they pollinate the females.
- Autoflowering seeds carry ruderalis genetics that make the plant to flower on age rather than on light cycle. They are smaller, quicker and more tolerant of imperfect conditions, usually at the cost of yield and potency.
Feminized and autoflowering are not opposites: most autoflowering seeds sold today are also feminized, and the description usually says so. Regular autoflowering seeds exist but are uncommon.
Males: Asset or Liability?
For the bulk of buyers the answer is feminized. If the goal is flower, every male plant is room, light and time spent on something that will be discarded, and a single overlooked male can seed an entire room. Feminized seeds sidestep that issue completely.
Regular seeds earn their place in a few situations. Breeders need males for pollen. Growers who want to hunt for a mother plant from a large population often prefer the broader genetic variation of regular stock. And some traditional lines are only sold in regular form. Outside those cases, paying for seeds that are half male is hard to justify.
Why Autos Behave Differently
Photoperiod plants remain in vegetative growth as long as they get long days and move to flowering when the light falls to around twelve hours. That gives the grower the decision: veg for two weeks or two months, shape the plant, then flip flowering when it suits the space.
Autoflowers disregard the light schedule and flower on a clock set by genetics, usually a few weeks after sprouting. The whole cycle from seed to harvest is shorter, the plants remain small, and they can be grown under continuous light from start to finish. The trade-off is that mistakes cannot be fixed by extending veg: a stressed autoflower remains stunted. Beginners, balcony growers and anyone with limited height often succeed with autos; growers after maximum yield from a given footprint generally prefer photoperiod stock.
Beyond the Strain Name
A seed listing packs a lot of information into a few lines, and much of it is more informative than the strain name.
- Flowering time. For photoperiod strains this is measured from the light flip; for autos it is often given as total time from seed. Confirm which convention the breeder uses.
- Sativa, indica or hybrid. Today almost everything is a hybrid; the percentages hint at growth habit (height, internode spacing, flowering time) more than at effect.
- Lineage. The parent strains show you what to expect in smell, structure and growth habit far better than any marketing text.
- THC and CBD ranges. Quoted figures are from the breeder’s in-house tests under ideal conditions. Treat them as a ceiling, not a promise.
Telling Live Seeds From Dead Ones
Appearance is a rough guide to viability, not a verdict, but a few signs are worth knowing.
- Float test. Dropping seeds in water and discarding floaters is popular but unreliable: healthy seeds often float until the shell absorbs water.
- Size. Larger is not a quality marker; seed size varies by strain, and some excellent genetics produce small seeds.
- Colour. Brown, tan, grey or striped seeds are usually mature. Pale green or white seeds were harvested too early and rarely sprout.
- Shell. A hard shell that does not give under light finger pressure is a good sign; seeds that crush easily are non-viable.
- Surface. A slight waxy sheen is normal. Cracks, dimples or obvious mould rule out a seed.
Cool, Dark, Dry, Still
Cannabis seeds remain viable for years if they are kept properly and for months if they are not. The enemies are heat, light, moisture and change.
- Keep them cool. A steady temperature in the fridge range slows the seed’s metabolism without harming it; the freezer is dangerous unless the seeds are bone dry.
- Keep them still. Moving seeds between warm and cold repeatedly does more damage than either condition on its own; open the container as rarely as possible.
- Keep them dry. A sealed container with a desiccant packet stops the humidity swings that start premature germination or mould.
- Keep them dark. Light breaks down the embryo over time, so an opaque container is better than a clear one.
Cracking the Shell
Every grower has a preferred method, but the requirements are the same in all of them: moisture, warmth, darkness and air.
- Soak the seeds in room-temperature water for up to a day to soften the shell. Any longer and they can suffocate.
- Move them to a moist paper towel inside a closed container, or straight into a small pot of light, moist medium. Keep the temperature in the low-to-mid twenties Celsius.
- Wait. Most seeds show a taproot within two to five days; some take a week or more.
- Once the taproot is about a centimetre long, plant it root-down, shallowly, and give gentle light as soon as the seedling breaks the surface.
Handle sprouted seeds as little as possible; the taproot snaps easily and a damaged one often stops the seedling for good.
Where the Seeds Come From Matters
Seeds are only as good as the supplier, and the difference between a reputable seed bank and a middleman of unknown stock shows up in germination rates, not on the website.
- Storage on their end. Ask how stock is stored. Seeds sitting in a warm warehouse for a year lose viability before they reach you.
- Original packaging. Seeds should arrive in the breeder’s original packs, not repackaged in a plain bag.
- Clear policies. Shipping regions, packaging, and what the seller does when seeds fail to sprout should all be spelled out in plain language.
- Breeder transparency. A good seller lists the breeder for every strain. Bud Weed Seeds carries lines from Barney’s Farm, Dutch Passion and Royal Queen Seeds, among others, with the breeder named on each product page.
Delivery, Packaging and Replacements
Bud Weed Seeds delivers to the EU, the UK and Canada. Orders are dispatched in plain packaging with no reference to the contents on the outside.
Seeds come with a germination guarantee: if any seed fails to sprout within 14 days of arrival when started by the recommended method, Bud Weed Seeds sends a replacement for it. The claim needs the order number and, in most cases, a photo.
Seeds, Plants and the Law
The law on cannabis seeds is distinct from the law on cannabis itself, and it varies sharply by country. In many European jurisdictions seeds are sold legally as collectors’ items or for hemp purposes, while germinating them stays illegal. Elsewhere both buying and growing are allowed under licence or within personal limits, and in some countries possession of seeds alone is prohibited.
Bud Weed Seeds does not ship to the United States, where import of cannabis seeds is not permitted. It is the buyer’s duty to know the rules in their own jurisdiction before ordering, and nothing on this page should be taken as legal advice.
Questions Growers Ask
Are autoflowering seeds less potent?
Modern autos are much closer to photoperiod strains than early ones were. Yields per plant are generally smaller because the plants are smaller, but potency in good lines is comparable.
Why did a seed fail to sprout?
The most frequent causes are too long in water, cold, a medium that is too wet or too dry, and injury to the taproot during handling. Genuinely dead seeds are rarer than grower error.
Does Bud Weed Seeds stock CBD-only strains?
Yes. The catalogue includes high-CBD lines with negligible THC, marked as such on the product page, as well as balanced and THC-dominant strains.
How long do cannabis seeds last?
Stored cool, dark and dry, most seeds germinate reliably for two to three years and often much longer. Left in a warm drawer, viability drops sharply within a year.
Can I tell the sex of a seed by looking at it?
No. Methods based on shape, markings or the scar at the base have no scientific basis. Only feminized breeding, or waiting for the plant to reveal preflowers, determines the sex.