Sativa seeds come with more vocabulary attached than any other kind of cannabis seed, and a good deal of it says a certain thing to a botanist, something else to a seed company and a third to the person trying to make a decision in front of the pack. The disappointing sativa grow nearly always goes back to a word that was understood in the wrong sense: a flowering time taken as a promise, a “sativa-dominant” tag taken as a statement of character, a landrace bought as if it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com open for reference, because it runs strongly to the long-flowering end of the spectrum where the vocabulary matter most; the meanings though hold to any sativa seed from any seller. They are given in no special order, since none of them is sense without the rest.

Flowering time (and what it is counted from)

The figure of weeks between the start of flowering and maturity, which is the one most frequently misunderstood number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, not from sowing, so a “fourteen-week” sativa started with a ordinary vegetative stage is a five-month plant. Seed companies also give the shorter end of a range, since the other end sells fewer seed.

Sativa plants run everywhere from ten weeks to well over twenty, and the slowest line in the Haze Sativa Seeds range comes in at around 16 weeks after the flip. The catalogue can be filtered by this figure, which is the sensible first step if you have a grower on a fixed timetable. A grower who adds four weeks to whatever the pack says is seldom disappointed.

Stretch (the doubling)

The burst of upward growth that comes after the switch to flowering. Most tent-bred plants gain half again; sativas commonly double, and a few equatorial lines triple. The stretch lasts two to four weeks and cannot be stopped once it has started, merely redirected by training.

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

Landrace versus heirloom

A population of plants adapted over centuries to one region by the local climate and climate alike, rather than by deliberate selection. Colombian, Colombian, Congolese and Oaxacan lines are the sativa cases. A landrace is variable, rather than a single plant: within a pack the flowering times, flowering times and smells spread far more than in any tent-bred hybrid, and that variation is the point of keeping one.

The trap is buying a landrace like a modern hybrid. It brings traits that make sense in an open field, such as a frame no tent can contain and a flowering rhythm tuned to an equatorial daylength the majority of growers never provide. “Heirloom” in a listing generally means a landrace that has been reproduced away from its origin for some generations, typically with light selection towards indoor life; it is closer to manageable but nonetheless not uniform. A shop offering “landrace” without an origin region and a reproduction count is applying the word as a flavour, and the pack should be priced with that in mind.

Haze

In its first sense a particular line of plants bred in coastal California from Mexican, Colombian and Thai landraces, and later preserved and refined in the Netherlands. The Haze runs tall, branches openly, takes for twelve to to sixteen weeks and carries a scent of spice, pine and a note sharp that no other other line exactly has.

In its second sense “Haze” is whatever cross which carries some of that family, and today is most of the sativa-leaning market. A listing which reads “Haze” without parents could be eighty percent original classic family or one small fraction of it, and the grow time follows the share, not the name. The working question is not “is it a Haze” but “how much, and through which parent”.

Equatorial

Describes lines from regions in which daylength hardly varies across the year, which means that the plant does not evolved a sharp reaction to changing days. These lines often start flowering reluctantly under a conventional twelve-hour light cycle, since twelve hours is, for them, a mild ordinary day and not a signal.

The working response, passed around among sativa growers for decades, is to shorten the light further: eleven hours, occasionally ten, particularly during the final weeks. It costs a yield yield and gains an earlier decisive end. A listing which uses “equatorial” is warning you about this in one word, and a grower who reads it as a note on geography has missed the instruction inside it.

Foxtailing

The tendency of some flowers to grow new calyx growth on top of existing ones, producing towered, open buds instead of dense ones. In the majority of indica-leaning strains it is a heat symptom, usually caused by light that is too close or a room that is too high, and the advice is to fix the cause.

In many sativas, especially Thai and certain Haze hybrids, it is genetic and is going to happen under a flawless room. A first-time sativa grower often spends a month chasing a fault that was never not there, lowering lights and heat and slowing an already slow flower even more. The breeder seldom says which kind to expect; the parentage usually does.

Latitude (outdoor sativas)

The one figure that determines whether a sativa will ripen outdoors, and one no pack states. Equatorial lines need the autumn days to continue late enough to let the plant ripen; in high latitudes the frost comes first, and the grower cuts an half-finished plant in late October or else watches it rot in November. The further to the equator, within a northern hemisphere, the longer the window stretches, and Mediterranean and low-latitude growers can finish plants that northern growers never will.

The usable rule for a seed pack: an “outdoor” sativa harvest date is stated for the breeder’s home latitude, normally a point within southern Europe or the west coast of the United States, and every step north of that moves the date later towards the weather. A grower north of roughly the fiftieth parallel who is after a long-flowering sativa outdoors is looking for a sativa autoflower or else a covered space, and not a longer season.

Terpinolene (the “sativa smell”)

A terpene present in high proportion in many old sativa strains and responsible for most of what people describe as a “sativa” aroma: green, piney, lemon and slightly sweet all at once. It is fragile, driven off quickly through hot drying, and terpinolene fades faster during storage than the heavier terpenes that dominate most tent lines.

To a seed buyer the name earns two things. Where a listing names terpinolene as the lead aromas, the strain probably carries substantial Haze-era genetics regardless of what the label says. And when the grower are after that smell to survive by the jar, the cure has to be cool and cool; a fast dry flattens a terpinolene line into a flower that smells of hay and leaves nothing of what the pack promised.

Intersex tendency

The production of male flowers on a female plant, usually towards the end in flower and often under stress. Almost every cannabis line carries a degree of capacity for do; long-flowering plants show it more, and the reason is one simple one: sixteen weeks of flower is sixteen weeks of exposure for a timer leak, a temperature spike or a missed watering to set it off, and a old plant has already gone past its intended end frequently throws a few late male sacs on its own in a final effort to set seed.

Not one of this makes a sativa line unstable as a matter of nature; it makes the grower’s discipline count over a longer stretch. Light-tight room, steady conditions and cutting when the plant is done and not two week later remove most of the problem. A listing that mentions the breeder screens parents for intersex traits is saying something more for a long-flowering line than for anything other category.