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Sativa seeds come with more jargon attached than any other kind of cannabis seed, and a good deal of it says a certain thing to a botanist, another to a seed company and a third to the person trying to make a decision in front of the listing. A failed sativa grow usually goes back to a word that was read in the wrong one of those senses: a flowering time taken as a fixed number, a “sativa-dominant” label read as a statement of character, a landrace bought like it were a modern hybrid. The entries below are put together with the range at https://hazesativaseeds.com open as reference, since it runs strongly towards the long-flowering end of the spectrum where the words carry the most weight most; the definitions themselves hold to any sativa seed from any shop. They are given in no particular order, because none of them is usable on its own without the others.

Latitude (outdoor sativas)

The single figure that decides whether a sativa will finish outdoors, and a number that no pack prints. Long-flowering plants require the autumn days to continue long enough for the plant to ripen; at northern latitudes the frost arrives first, and the grower cuts a half-finished plant in the end of October or watches it rot in November. The further south, in a northern hemisphere, the longer the window runs, and Mediterranean or low-latitude growers can ripen lines that temperate gardens never will.

The usable reading for a seed pack: an “outdoor” sativa finishing date is given for the breeder’s home latitude, usually somewhere in southern Europe or the western United States, and each degree north of that moves the date later towards the frost. A grower above roughly the fiftieth parallel who wants a true sativa outdoors needs to be shopping for a sativa autoflower or a greenhouse, and not a longer season.

Hermaphroditism in long-flowering lines

The appearance of male flowers on a female plant, usually late in flower and frequently under stress. Every cannabis population has a degree of tendency to do; long-flowering plants show it more, for a simple one: fourteen weeks of flower is sixteen weeks of exposure for a light leak, a temperature spike or a missed watering to trigger it going, and an plant that has waited beyond its intended finish frequently produces a few desperate male sacs on its own as a final attempt to make seed.

None of these makes a sativa line unstable by course; it means the room’s discipline matter for a longer stretch. A sealed room, steady conditions and harvesting when the plant is ready and not two weeks later take away the greater part of the problem. A listing which mentions the breeder screens parents for intersex traits is worth worth hearing for a long-flowering line than for anything else.

Flowering time

The number of weeks from the onset of flowering and maturity, which is the single most misread number on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, not from sowing, so a “fourteen-week” sativa started after an ordinary vegetative period is a five-month plant. Breeders additionally quote the shorter end of the range, since the longer end moves less seed.

Long-flowering lines take everywhere from ten weeks to more than twenty, and the slowest line in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be sorted by this figure, which is a sensible first pass for a grower on a tight timetable. A grower who allows four weeks to the figure the pack says is seldom disappointed.

Equatorial

Describes lines from regions in which daylength hardly changes across the year, which means where the plant does not evolved a sharp reaction to changing days. These lines often start flowering slowly at a conventional twelve-hour light cycle, since twelve hours is, to 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, especially during the last weeks. It loses some yield yield and gains an more clearer end. A listing that uses “equatorial” is warning you about this with one word, and a grower that reads it as mere origin has missed the point hidden in it.

Foxtailing

The habit of certain flowers to push out new bud growth on top of existing ones, giving towered, open buds rather than dense ones. In most indica-leaning lines it is a stress symptom, typically caused by light too close or a room that is too high, and the standard response is to fix the room.

In many sativas, above all Southeast Asian and some Haze hybrids, it is built in and is going to happen under a flawless room. A new sativa grower often spends weeks hunting a fault that is a problem, lowering lights and heat only slowing a long plant even more. The breeder rarely says which type to expect; the parentage usually tells you.

Sativa-dominant

A catalogue term and not a measurable one. It usually means that more of a hybrid’s parents were described as sativa by the breeder who wrote the listing, and sometimes signals nothing more than that the flowers are longer or the smell brighter than the same breeder’s other releases.

The effect people connect with the word, lively rather than heavy, is governed far more by terpene profile and by THC balance than it is by the sativa fraction, and a good number of “sativa-dominant” releases deliver a heavy couch effect while a good number of the opposite stock do the opposite. To a grower the percentage is worth something for a loose hint to growth habit, flowering time and stretch; for a predictor to how it feels it is close to worthless without the aroma description.

Stretch

The burst of vertical growth that comes after the switch to flowering. Indica-leaning plants gain around half their height again; sativas routinely double, and some equatorial lines triple. The stretch lasts three to four weeks and cannot be halted once it has started, only bent sideways by training.

In tent terms, a stretch multiplier is a number to read before deciding when to flip. A sativa flipped at sixty centimetres inside a standard tent is at the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. People moving over from indica stock nearly always switch too late the first time, and the consequence is visible on the ceiling of the tent.

Terpinolene (the “sativa smell”)

A terpene found in high proportion in many classic sativa lines and accounting for much of what growers describe as a “sativa” aroma: fresh, woody, lemon and faintly floral at once. It is volatile, driven off easily by fast drying, and it degrades more quickly in the cure than the heavier terpenes that lead most tent stock.

For a seed buyer the name earns two jobs. Where a listing names terpinolene as the lead aromas, the line most likely carries substantial Haze-era ancestry whatever the label says. And where the grower are after that smell to survive by the jar, the cure has to be slow and cool; a fast dry flattens a terpinolene line to a flower that smells of very little and leaves no trace of what the pack described.

Haze

Originally a particular family of plants bred in 1970s California from Mexican, Colombian and South Indian parents, and then kept and refined in the Netherlands. A true Haze runs tall, branches sparsely, takes for twelve to sixteen weeks and smells of spice, pine and a note metallic that no other line exactly reproduces.

In its looser sense “Haze” is any cross that contains some of that family, and today is most of the sativa-leaning market. A listing that says “Haze” without lineage could be eighty percent the classic family or a sixteenth of it, and the grow character follows the fraction, not the name. The working question is not “is it a Haze” but “how much, and via which parent”.

Landrace

A population of plants shaped through centuries to one place by local growers and climate together, and not by deliberate selection. Colombian, Colombian, Congolese and Oaxacan lines are the classic sativa cases. A landrace is a spread, rather than a one plant: inside a pack the flowering times, finishing times and smells spread widely than any tent-bred hybrid, and that spread is the whole value of keeping one.

The trap is buying a landrace like a finished product. It brings habits that made sense in an equatorial field, such as height that no tent can hold and a flowering clock tuned to an daylength most growers cannot offer. “Heirloom” in a listing generally means a landrace that has been grown out somewhere over some generations, typically with light selection towards tent life; it is closer to manageable but nonetheless far from a hybrid. A shop offering “landrace” without an collection point and a reproduction count is applying the word as a flavour, and the pack should be judged with that in mind.