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Cannabis Seeds: Storage, Types and Genetics

Any cannabis plant starts as a seed, and the seed settles more than most people realise: the sex of the plant, how it responds to light, how tall it grows, and the mix of cannabinoids and terpenes it can develop. Choosing well at this stage saves months of lost effort later. The market has grown enormously, and https://budweedseeds.com currently lists 400 strains from breeders around the world. This guide covers the main seed types, how to read a strain description, what distinguishes a good seed from a poor one, and how to store and germinate them correctly.

What You Are Actually Buying

A cannabis seed is a small, hard-shelled embryo enclosed in a protective coat. Mature seeds are usually brown, grey or tiger-striped, solid to the touch and slightly glossy. Inside sits everything the plant needs to start: a root tip, two cotyledon leaves and a store of nutrients to power 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 spread is normal 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 belongs to one of three categories, and the choice between them is the most important decision a buyer makes.

• Autoflowering seeds carry ruderalis genetics that make the plant to flower on age rather than on light cycle. They are smaller, faster and more forgiving of less-than-ideal conditions, usually at the cost of yield and potency.
• Feminized seeds are bred to produce female plants very nearly every time. For anyone growing for flower rather than for breeding, they eliminate the guesswork and the wasted space of male plants.
• Regular seeds give male and female plants in about equal numbers. They are favoured by breeders and by growers who want to make their own seeds, though they require identifying and removing males before they pollinate the females.

Feminized and autoflowering are not opposites: most autoflowering seeds sold today are also feminized, and the description normally says so. Regular autoflowering seeds exist but are rare.

Males: Asset or Liability?

For the majority of buyers the answer is feminized. If the goal is flower, every male plant is space, light and time spent on something that will be discarded, and a single overlooked male can seed an entire room. Feminized seeds sidestep that problem completely.

Regular seeds justify their place in three situations. Breeders need males for pollen. Growers who want to select a keeper from a large population often prefer the wider genetic spread of regular stock. And some old-school lines are only available in regular form. Outside those cases, paying for seeds that are half male is difficult to defend.

Light-Driven or Clock-Driven?

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 hands the grower control: vegetate for two weeks or two months, train the plant, then flip flowering when it suits the space.

Autoflowers disregard the light schedule and bloom on a timer set by genetics, usually a few weeks after sprouting. The whole run from seed to harvest is much shorter, the plants remain small, and they can be run under long light from start to finish. The downside is that mistakes cannot be fixed by extending veg: a stunted autoflower remains stunted. Beginners, balcony growers and anyone with limited height often succeed with autos; growers chasing maximum yield from a given footprint generally choose photoperiod stock.

Beyond the Strain Name

A seed listing packs a lot of information into a few lines, and most of it is more informative than the strain name.

• Lineage. The parent strains tell you what to expect in smell, structure and growth habit far better than any marketing text.
• 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 point at growth habit (height, internode spacing, flowering time) more than at effect.
• Yield estimates. Given per square metre indoors or per plant outdoors, and heavily reliant on the grower. Use them to compare strains from the same breeder, not across breeders.
• THC and CBD ranges. Stated figures are from the breeder’s in-house tests under ideal conditions. Read them as a ceiling, not a guarantee.

Signs of a Healthy Seed

Appearance is a loose guide to viability, not a test, but a few signs are reliable.

• Colour. Brown, tan, grey or striped seeds are usually mature. Pale green or white seeds were picked too early and rarely sprout.
• Surface. A faint waxy sheen is normal. Cracks, dents or visible mould rule out a seed.
• Shell. A firm shell that does not crack under light finger pressure is a healthy sign; seeds that collapse easily are dead.
• Size. Larger is not a quality marker; seed size varies by strain, and some excellent genetics make small seeds.
• Float test. Dropping seeds in water and discarding floaters is common but crude: fresh seeds often float until the shell absorbs water.

Keeping Seeds Alive in the Drawer

Cannabis seeds remain viable for years if they are kept properly and for months if they are not. The threats are heat, light, moisture and change.

• Keep them still. Moving seeds between warm and cold again and again does more harm than either condition on its own; open the container as rarely as possible.
• Keep them dry. A sealed container with a desiccant packet prevents the humidity swings that start premature germination or mould.
• Keep them dark. Light degrades the embryo over time, so an light-proof container beats a clear one.
• Keep them cool. A constant temperature in the fridge range slows the seed’s metabolism without damaging it; the freezer is risky unless the seeds are fully dried.

Getting a Taproot

Every grower has a favourite method, but the requirements are the same in all of them: moisture, warmth, darkness and oxygen.

1. Place the seeds in room-temperature water for up to a day to soften the shell. Longer and they can suffocate.
2. Move them to a moist paper towel inside a closed container, or directly into a starter pot of light, moist medium. Keep the temperature in the low-to-mid twenties Celsius.
3. Wait. Most seeds produce a taproot within two to five days; some need a week or more.
4. Once the taproot is about a centimetre long, plant it root-down, shallowly, and give gentle light once the seedling breaks the surface.

Touch sprouted seeds as little as possible; the taproot breaks easily and a damaged one often stalls the seedling for good.

Vetting the Seller

Genetics are only as good as the supplier, and the difference between a serious seed bank and a reseller of uncertain stock appears in germination rates, not on the website.

• 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.
• Original packaging. Seeds should arrive in the breeder’s sealed packs, not loose in a plain bag.
• Storage on their end. Ask how stock is stored. Seeds sitting in a warm warehouse for a year lose viability long before they reach you.
• Pack options. Multiple pack sizes allow you to test a strain before buying in bulk; Bud Weed Seeds sells packs of 3, 5 and 10 seeds on most lines.
• Clear policies. Shipping regions, discretion, and what the seller does when seeds fail to germinate should all be spelled out in plain language.

From Checkout to Letterbox

Bud Weed Seeds ships to the EU, the UK and Canada. Orders are sent in discreet packaging with no mention to the contents on the label.

Seeds come with a germination guarantee: if a seed fails to germinate within 14 days of arrival when germinated as described above, Bud Weed Seeds replaces it. The request 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 countries seeds are sold legally as souvenirs or for agricultural purposes, while germinating them stays an offence. Elsewhere both buying and growing are allowed under licence or within personal limits, and in some countries ownership of seeds alone is banned.

Bud Weed Seeds does not send orders to the United States, where importing of cannabis seeds is restricted. It is the buyer’s responsibility to check the rules in their own country before ordering, and nothing on this page should be taken as legal advice.

Quick Answers

Are autoflowering seeds weaker?

Current autos are far 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.

Can I tell the sex of a seed by examining it?

No. Claims based on shape, ridges or the scar at the base have no scientific basis. Only feminized breeding, or waiting for the plant to show preflowers, tells you the sex.

Why did a seed fail to germinate?

The most frequent causes are over-soaking, cold, a medium that is too wet or too dry, and damage to the taproot during transplanting. Genuinely dead seeds are less common than mistakes in the process.

How long do cannabis seeds last?

Kept cool, dark and dry, most seeds germinate well for two to three years and frequently far longer. Kept in a warm drawer, viability drops noticeably within a year.

Does Bud Weed Seeds stock CBD-only strains?

Yes. The catalogue has high-CBD lines with negligible THC, marked as such on the product page, alongside balanced and THC-dominant strains.

2026-10-20