Browse through most seed shops today and the regular section is the shelf at the back: shorter every year, marked cheaper than the feminized packs beside it, and bought by a shrinking group of people who know exactly what they are looking for. It is tempting to read that as obsolescence. It is nearer to the truth to read it as a library losing shelves while the paperback rack next door grows. Every feminized line started as a regular one, each new cross requires a male somewhere in its pedigree, and the breadth of cannabis genetics that survives at all exists because somebody kept regular seed. Dedicated sellers such as https://breederregularseeds.com stock lines going back to the 1980s, offered in packs of 10 seeds because a pack is meant to be a population, not a one plant. This article sets out the case for that half-male pack: what the male contributes, what a grower gives up by never growing one, and how to get value with a population instead of a clone.

The Other Half of the Genome

The lazy description of a male cannabis plant is “the one that makes pollen”, and for a flower grower that is the whole of it. To a breeder it is half the genome of every seed that follows, and that half is chosen with the same attention as the female.

A male contributes growth habit, hybrid vigour, maturation speed, resistance to mould and pests, trichome production and the aromatic chemistry exactly as the female does; it just shows several of those traits less visibly since it never produce a smokable flower. Breeders who work with regular seed spend at least as much time selecting males as females, which is the work that a feminized cross borrows and can never replicate. Feminizing a female gives pollen; it does not give a different set of selected traits.

What Happens When Lines Are Only Selfed

A great deal of the feminized catalogue is made from S1 seeds: a single popular clone, reversed and pollinated with itself. Each generation of that selfing cuts in half the remaining genetic diversity, and after a couple of rounds what remains is essentially one plant repeated across slightly different forms.

That is acceptable for a consumer who wants that one plant. It is a loss for everyone downstream. Recessive faults emerge: hermaphrodite tendencies, weak stems, susceptibility to one particular mould. Traits that were present in the original line but absent in the chosen clone disappear out of the gene pool altogether. A decade of this leaves a market crowded with versions of a dozen plants, and a anyone wanting to make something new discovers there is nothing left to work with. Regular seed from an outcrossed line is the store that refills the market, and that reservoir can only persist as long as people keep growing it.

Selecting the Plant Nobody Writes About

Articles on choosing females are easy to find; guidance on choosing males is rare, because most people never keep one long enough to judge. For a grower producing seed, these are the signs breeders watch for.

• Resin on the stem. Rub a stem or a pollen sac and smell it. A male with trichomes on its sepals and a clear scent indicates it carries the resin genes that are worth passing on.
• Structure. Short internodes, a strong central stem and a frame that resembles the desired female shape are inherited; a stretched, floppy male passes that down too.
• Timing. A male that declares sex early and flowers at the same pace as the females is more useful than a very early one that releases pollen before the female is receptive.
• Stability. A male that also shows female pistils under ordinary stress is rejected outright; the trait is the last thing worth carrying into a line.

A Pack Is a Population

The error new regular-seed buyers make is seeing a pack as 10 attempts at the same plant. It is the opposite. A pack from a real outcrossed line is a slice of a population, and the value of running it is to see the range and select from it.

About half the plants will be male, so a pack of 10 seeds yields around five females to evaluate and five males to either discard or assess for breeding. Within the females, look for noticeable variation: height, finishing time, smell, density, tolerance. This spread is not a flaw in the seed; it is what the seed is selling. The grower who keeps the best female and the best male has something a feminized pack cannot supply: a line of selected parents that are theirs.

Three Ways to Cross

Owning selected parents is only worth something if producing the next batch, and there the options multiply. Three methods account for most of what home breeders do.

• Open pollination. Allow each male pollinate every female. It preserves the full diversity of the line, produces a generous volume of seed, and involves no choosing at all. This is how landrace lines are kept going, and it is the right method when the aim is preservation rather than refinement.
• Selected cross. One picked male on one or a few chosen females, every other plant else culled. The offspring inherit the traits of two specific plants and express narrower variation than the parent pack. Repeated over several rounds with stable selection, this is how a stable line is built.
• Backcross. Take a chosen offspring again to one of its original parents to lock in a specific trait. It narrows the range quickly and is used when one parent shows something worth concentrating and the other brought mainly vigour.

All three need only a isolated space for the male, a paintbrush or a small bag, and a few weeks. None of them calls for the chemical treatment that feminized seed-making does.

Keeping Old Lines Alive

Some lines were never feminized and likely never will be: landraces gathered from places where cannabis was grown for centuries, and heirloom crosses from the early decades of indoor breeding. They are sold as regular seed because the people keeping them regard diversity as the whole value, and reversing a single plant would destroy precisely what makes the line worth preserving.

Running a landrace from regular seed is different from running a commercial hybrid. There will be large variation, long flowering periods in equatorial lines, tall plants, and qualities that make sense in a mountain valley but not under a small room. Expect too aromas and chemistry that do not exist in the commercial market at all. Breeder Regular Seeds keeps a separate landrace and heirloom section, with each line marked with its region of origin and the generation it has been grown out since the first collection.

The Honest Exclusions

None of the above turns regular seed the right choice for everyone, and claiming that it is would the product no service.

A grower with space for a handful of plants who wants every one of them to finish is better off with feminized seed. The same is a grower unable to inspect the plants every day during the start of flower, since a late male in a small space seeds everything within days. A person running a single autoflower on a balcony has no value from a pack they cannot select from. And anyone who wants a known famous plant repeated as closely as possible is looking for a feminized S1, not a two-parent cross. Regular seed is for the grower who intends to select, to hold onto and eventually to make something new; for everyone else the back shelf is best ignored alone.

Practicalities

Breeder Regular Seeds sends each order in unmarked packaging with the original packs sealed inside and nothing on the outside to reveal the contents. Orders to the United States are not accepted, as seed importation is restricted there. Seed law varies sharply by country: in many places buying seeds is legal as genetic preservation while germinating them is not, and in others both are permitted under local rules or both is. Knowing the rules where you live is the buyer’s job, and no part of this article should be read as legal advice.