Cannabis Propagation Explained: Seeds vs Clones

Propagation just means making new plants, and there are two ways to do it: from seed or from a cutting. Beginners only need the first. But understanding both — and crucially, what each gives you — is what lets you hold onto a plant you love instead of rolling the dice every grow.

The short version:

• Seeds = genetic variation; siblings from one pack differ (phenotype variation)
• Clones = an exact genetic copy of one chosen plant
• Start from seed; it’s simpler and gives you a range to select from
• Clone only once you’ve found a keeper worth preserving
• You can only clone from a plant in veg, and a clone needs full space, not a shelf

Want the full breakdown? Keep scrolling.

What’s the difference between seeds and clones?

A seed is a fresh genetic shuffle of two parents — so even within one pack of the same strain, the plants vary. Order five and you might get two short and bushy, two medium and branchy, one tall and leggy. That’s phenotype variation, and it’s normal, not a faulty pack — like siblings from the same parents. A clone is a cutting taken from one plant and rooted, genetically identical to its source: same height, same stretch, same smell, no surprises. Seeds give you a spread to choose from; clones let you take the one you chose and make more of exactly it.

When should I use each?

Start from seed. For a first grow, and for trying anything new, seed is simpler and gives you that range to read and select from. Feminised seed (CSB have a beginner section that won’t overwhelm you) keeps it to females and avoids the male headache. Clone once you’ve found a keeper — the pheno that fit your tent, smelled right, didn’t fight you. Seeds won’t hand her back; sowing the rest of the pack gives you siblings again. A cutting off the keeper, rooted, is her, growing on. That’s why experienced growers run a pack of five or ten, grow them out, and keep their favourite as a mother to clone from — they’re buying a range and selecting, not buying a finished product.

Two things to know before you clone

First, you can only take a clone from a plant in veg. A flowering plant has committed to making buds; a cutting off her sulks for weeks trying to revert before it does anything useful. Veg is the window. Second, a clone isn’t a spare — it’s a whole plant. It needs a pot, light and room like anything else. The Hoarder took a cutting off every plant he half-liked “just in case,” kept the best as mothers, and six months later had a 1.2m tent stuffed with plants he was keeping and nothing flowering. As a beginner you don’t need to clone at all on your first grow. Grow her up first. The copying can wait until you’ve got something worth copying.

FAQ

Should a beginner grow from seeds or clones? Seeds. They’re simpler to source, give you a range of phenotypes to choose from, and don’t require a mother plant. Clone later, once you’ve found a keeper.

Why are my plants from one seed pack all different? Phenotype variation — each seed is a fresh genetic mix of the parents, so siblings differ in height, structure and smell. It’s normal and not a sign of fake seeds.

Can I clone any cannabis plant? Only one in vegetative growth. Cuttings from a flowering plant root slowly and revert fussily. Take clones in veg for a clean, simple result.

Does a clone grow the same as its mother? Yes — it’s genetically identical, so same height, stretch and smell. That’s the whole point of cloning a keeper.