How growers mix strains

"Mixing" two strains is plant breeding: you take pollen from a male plant and use it to fertilise the flowers of a female, and the seeds that result carry genes from both parents. That first generation is what Greenpert's simulator estimates — but in the real world, getting to a strain you can name and sell takes far longer than a single grow.

Here's the process growers actually follow, and where the shortcuts and surprises are.

1. Pick the parents

You start with a goal — more potency, a faster flower, a specific flavour, more CBD — and choose two parents whose traits lean that way. This is exactly what the strain library and the "Find best" ranker are for: comparing parents on potency, terpenes, flowering time and lineage before you commit.

2. Pollinate

1. Keep a male plant of one parent and a female of the other (most growers normally remove males to avoid seeds — here you want them).
2. When the male's pollen sacs open, collect the pollen.
3. Brush it onto the flowers of the female. Those flowers then grow seeds instead of just resin.
4. Let the seeds mature, dry, and harvest them. These are your first-generation ("F1") seeds.

3. The catch: phenotypes

Plant a pack of those F1 seeds and they won't all be identical — even though they share the same two parents. Each seed expresses the mixed genetics a little differently: one plant might be tall and lemony, its sibling short and earthy. These variations are called phenotypes, and sorting through a batch to find the best one is "pheno-hunting."

This is why Greenpert reports a stability score and runs hundreds of simulated grows rather than one. A low-stability cross means the offspring vary a lot — you'd have to grow many seeds to reliably get the plant you want.

4. Stabilising it

To turn a lucky phenotype into a consistent, repeatable strain, breeders keep going for several more generations — selecting the plants closest to their goal each time and breeding them back together (often backcrossing to a favoured parent). Over many cycles the offspring stop varying as much, and the strain "breeds true." Commercial strains can take years of this.

Where Greenpert fits

• It models the first cross — the F1 average and how much it's likely to vary — so you can scout pairings before spending a real grow cycle on them.
• It can't replace pheno-hunting or stabilising; nothing can predict the exact plant from a single seed.
• Treat the numbers as a well-informed starting point for which parents are worth crossing, not a guarantee of the result.