A Working Glossary for Sativa Seed Buyers

Sativa seeds come with more jargon attached than any other category of cannabis seed, and a good deal of it means a certain thing to a botanist, another to a seed company and something different again to the person standing in front of the listing. A disappointing sativa grow usually goes back to a word that was understood in the wrong sense: a flowering time taken as a fixed number, a "sativa-dominant" label taken as a description of effect, a landrace chosen as if it were a modern hybrid. The entries below were written with the range at https://hazesativaseeds.com open for reference, since it leans strongly to the classic end of the category and that is where the vocabulary matter most; the meanings though apply to any sativa seed from any seller. They are given in no particular order, since none of them makes usable without the others.

Foxtailing (and when it is not a fault)

The habit of some flowers to push out fresh bud growth on top of old ones, producing towered, irregular buds instead of dense ones. In the majority of indica-leaning lines it is a heat response, usually caused by light that is too close or a room too high, and the advice is to fix the room.

In many sativas, above all Southeast Asian and some Haze hybrids, it is genetic and is going to occur in a perfect room. A new sativa grower often wastes a month chasing a fault that is not there, lowering lights and temperatures and slowing a slow plant further. The listing seldom warns which kind you should expect; the parentage generally does.

Latitude

The single figure that decides whether a sativa will ripen outdoors, and a number no pack prints. Long-flowering lines require the autumn days to go on late enough to let the plant ripen; in northern latitudes the frost arrives first, and the grower harvests a unripe plant in late October or else watches it rot in November. The closer south, in a northern hemisphere, the longer the season stretches, and coastal and low-latitude gardens can ripen lines that temperate gardens never will.

The usable rule for a seed listing: an "outdoor" sativa finishing date is stated for the breeder's home latitude, normally somewhere within temperate Europe or the western United States, and each degree north of that moves the date back into the frost. A grower above about the fiftieth parallel that is after a long-flowering sativa in the garden needs to be shopping for an autoflower or a covered space, not a better summer.

Haze (the family, not the smell)

Originally a particular family of plants bred in 1970s California from Colombian, Colombian and South Indian parents, and then preserved and worked in the Netherlands. A true Haze grows tall, fills out openly, flowers for twelve to sixteen weeks and carries a scent of spice, citrus and a note metallic that no line quite has.

In its looser sense "Haze" is any hybrid that carries a share of that family, and today is most of the sativa-leaning catalogue. A listing that reads "Haze" and gives no lineage may be mostly percent original old family or a sixteenth of it, and the flowering time tracks the share, not the name. The working question is never "is it a Haze" but "how much, and via which parent".

Equatorial

Refers to lines from regions where daylength barely varies across the year, which means where the plant does not evolved a sharp reaction to shortening days. Such lines frequently flower reluctantly under a standard twelve-hour schedule, because twelve hours is, for them, a mild ordinary day and not a signal.

The practical response, passed around among sativa growers over decades, is to shorten the light further: eleven hours, occasionally ten, particularly in the final weeks. It loses a little yield and buys a earlier decisive finish. A listing which says "equatorial" is warning you about this with one word, and a grower that reads it as mere origin has missed the point inside it.

Stretch (the doubling)

The burst of vertical growth that follows the change to flowering. Most tent-bred plants add half again; sativas commonly double, and some equatorial types triple. The stretch continues two to five weeks and cannot be stopped after it has started, merely redirected by training.

In tent terms, the stretch multiplier is a number to read before deciding when to flip. A sativa flipped at sixty centimetres centimetres in a two-metre tent is at the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. Growers coming over from indica strains almost always switch far too late the first time, and the consequence is written on the ceiling of the tent.

Terpinolene

A aromatic compound present in high amounts in many classic sativa strains and accounting for much of what growers mean as a "sativa" smell: fresh, piney, lemon and faintly sweet at once. It is volatile, lost easily through fast drying, and it degrades faster in the cure than the heavier terpenes that dominate indica-leaning stock.

For a seed buyer the word does two things. Where a listing lists terpinolene as the lead aromas, the line most likely carries real Haze-era ancestry regardless of what the percentage says. And when the grower wants that smell to survive by the jar, the drying is going to be slow and slow; a warm dry turns a terpinolene sativa into a flower that tastes of hay and no trace of what the pack promised.

Flowering time

The number of weeks between the onset of flowering and harvest, and the one most frequently misunderstood number on a sativa pack. For photoperiod seed it is counted from the day the light is cut to twelve hours, rather than from germination, so a "fourteen-week" sativa started after a eight-week vegetative stage is a twenty-two-week plant. Seed companies additionally quote the shorter end of the range, since the other end moves fewer seed.

Sativa plants take everywhere from ten weeks to well over twenty, and the slowest line in the Haze Sativa Seeds range is at about 16 weeks after the flip. The catalogue can be filtered by that figure, which is a sensible first step if you have a room on a fixed schedule. A grower who allows four weeks on top of the figure the pack states is rarely disappointed.

Landrace

A population of plants shaped through generations to a particular place by local climate and climate alike, rather than by deliberate selection. Colombian, Colombian, Congolese and Mexican stock are the classic sativa examples. A landrace is variable, not a single plant: inside a pack the flowering times, finishing times and aromas range widely than a tent-bred line, and that spread is the point of keeping one.

The mistake is treating a landrace as a modern hybrid. It brings traits that made sense in an open field, including height that no tent can hold and a flowering rhythm set to a daylength the majority of growers cannot offer. "Heirloom" in a listing generally means a landrace that has been grown out somewhere for some generations, often with light selection for tent conditions; it is closer to manageable but still not uniform. A shop listing "landrace" without a collection region and a reproduction count is using the word loosely, and the seeds should be priced with that in mind.

Sativa-dominant (the label)

The catalogue category and not a botanical one. It generally means that the larger share of a hybrid's parents are described as sativa according to whoever drafted the listing, and occasionally signals nothing more than a certain the buds are longer or the aroma brighter than the that breeder's indica-labelled releases.

The effect people connect with a word, lively rather than sedating, is driven far more by terpene chemistry and by THC content than it is by ancestry, and a good number of "sativa-dominant" releases deliver a heavy couch effect and a good number of indica-labelled lines do the reverse. For a buyer the label is worth something as a loose hint to growth habit, flowering time and stretch; for a guide to how it feels it is next to useless unless accompanied by the aroma description.

Intersex tendency

The production of male flowers on a female plant, typically late in flower and frequently under stress. Every cannabis population carries a degree of capacity for it; long-flowering lines express it more, and the reason is one plain reason: sixteen weeks of flower is fourteen weeks of exposure for a light leak, a heat spike or a missed watering to trigger it going, and an old that has already waited beyond its natural finish frequently produces a few desperate pollen flowers on its own as a final effort to set seed.

Not one of these makes a sativa strain weak by nature; it makes the room's discipline count for a longer stretch. Light-tight room, stable temperatures and cutting when the plant is ready rather than a week after remove the greater part of the problem. A listing which states the breeder tests parents for hermaphrodite traits is worth worth hearing on a long-flowering line than for anything other category.