Sativa seeds arrive with more vocabulary attached than any other kind of cannabis seed, and a good deal of it says one thing to a botanist, something else to a breeder and a third to the grower trying to make a decision in front of the listing. A disappointing sativa grow usually traces back to a word that was read in the wrong sense: a flowering time taken as a promise, a “sativa-dominant” tag read as a statement of character, a landrace bought as if it were a modern hybrid. The entries below are written with the range at https://hazesativaseeds.com to hand as reference, since it runs heavily to the classic end of the category and that is where the vocabulary carry the most weight most; the definitions themselves apply to any sativa seed from any shop. They are given in no particular order, because not one of them makes usable on its own without the rest.
Intersex tendency
The production of pollen-bearing flowers on a female plant, usually towards the end in flower and often in response to stress. Every cannabis line has some capacity for do; sativa lines express it more often, and the reason is one simple reason: fourteen weeks of flower is fourteen weeks of opportunity for a light leak, a heat spike or a missed watering to trigger it off, and a plant plant has gone past its intended end often produces a few desperate male flowers on its own as a final effort to set seed.
None of this makes a sativa line weak as a matter of nature; it means the room’s discipline matter for longer. A sealed room, stable conditions and cutting the moment the plant is done rather than a week after take away the greater part of the problem. A listing that mentions the breeder screens parents for hermaphrodite tendency is saying something more for a sativa than on any else.
Stretch (the doubling)
The burst of vertical growth which follows the switch to flowering. Most tent-bred plants add half their height again; sativas routinely double, and some landrace lines triple. The stretch continues three to four weeks and cannot be stopped after it has started, only redirected by training.
In practical terms, a stretch figure is the number worth read before deciding when to flip. A sativa switched at sixty centimetres in a two-metre tent is at the lamp by week four of flower; one switched at thirty centimetres centimetres has room. People coming over from indica strains almost always flip too late the first time, and the consequence is written on the ceiling of the tent.
Equatorial (the twelve-hour problem)
Refers to lines out of regions where daylength barely varies through the year, and where the plant never evolved a sharp response to changing days. These plants frequently flower reluctantly under a standard twelve-hour light cycle, because twelve hours is, to them, a mild ordinary day and not a signal.
The working response, handed around between sativa growers over decades, is to cut the light further: eleven hours, occasionally ten, particularly in the final weeks. It costs a yield yield and gains a more clearer finish. A listing which uses “equatorial” is telling you about this with one word, and a grower who takes it as a note on geography misses the point hidden in it.
Sativa-dominant
A marketing category rather than a botanical one. It generally indicates that the larger share of a hybrid’s parents are described as sativa according to the breeder who wrote the description, which occasionally signals nothing more than that the buds are airier or the aroma sharper than the that breeder’s indica-labelled lines.
The effect people associate with a word, clear-headed instead of sedating, is driven far more by terpene profile and by cannabinoid content than it is by the sativa fraction, and plenty of “sativa-dominant” releases produce a heavy sleepy effect and a good number of indica-labelled stock do exactly the reverse. To a grower the percentage is useful as a rough hint to growth habit, flowering time and stretch; as a guide to effect it is close to useless unless accompanied by the aroma description.
Landrace
A population of plants adapted through generations to a particular place by local growers and climate alike, rather than by modern selection. Thai, Colombian, Malawian and Mexican lines are the sativa cases. A landrace is variable, not a single plant: inside a pack the heights, finishing times and aromas range far more than in a tent-bred hybrid, and that variation is the whole value of keeping one.
The trap is treating a landrace as a finished hybrid. It carries traits that made sense in an open field, such as a frame that no tent can contain and a flowering clock set to an equatorial daylength most growers never offer. “Heirloom” in a listing generally refers to a landrace that has been reproduced away from its origin over a number of generations, often with a degree of selection towards tent life; it is closer to manageable but nonetheless far from uniform. A shop listing “landrace” that does not give an origin point and a generation count is applying the word as a flavour, and the pack should be judged accordingly.
Terpinolene (the “sativa smell”)
A aromatic compound found in high amounts in many old sativa strains and responsible for much of what people describe as the “sativa” smell: fresh, piney, citrus and slightly floral all at once. It is fragile, lost quickly by hot drying, and it degrades faster in the cure than the earthier terpenes that lead most tent stock.
For a seed buyer the word earns two things. When a listing names terpinolene among the lead aromas, the line probably carries substantial Haze-era ancestry whatever the percentage says. And when the grower are after that profile to survive to the jar, the drying is going to be slow and slow; a fast drying room turns a terpinolene sativa to something that tastes of hay and no trace of what the pack described.
Haze
In its first sense a particular family of plants put together in coastal California from Colombian, Colombian and Thai landraces, and then preserved and refined in the Netherlands. A true Haze runs tall, fills out openly, takes for twelve sixteen weeks and smells of incense, pine and a note sharp that no other other line quite reproduces.
In its second sense “Haze” is whatever hybrid that carries a share of that family, and by now is most of the sativa-leaning market. A listing that reads “Haze” and gives no lineage could be mostly percent the classic family or a small fraction of it, and the flowering character follows the fraction, not the name. The useful question is never “is it a Haze” but “how much, and through which parent”.
Latitude
The single number that determines if a sativa will ripen outdoors, and a number no pack states. Long-flowering lines need a autumn days to continue late enough to let the plant ripen; at northern latitudes the frost comes first, and the grower cuts an half-finished plant in the end of October or watches it to mould in November. The closer to the equator, within the northern hemisphere, the longer the season stretches, and coastal or low-latitude gardens can ripen lines that temperate growers cannot.
The usable reading for a seed pack: an “outdoor” line harvest month is given for the breeder’s home latitude, normally a point in southern Europe or the west coast of the United States, and every degree further north of it moves the finish later into the frost. A grower above about the fiftieth parallel that wants a long-flowering sativa outdoors needs to be looking for a sativa autoflower or else a greenhouse, and not a better summer.
Foxtailing
The tendency of certain flowers to grow fresh calyx clusters on top of existing ones, producing towered, open buds rather than dense ones. In most tent-bred lines it is a stress response, usually caused by light that is too close or a room too high, and the advice is to fix the room.
In a good number of sativas, especially Southeast Asian and certain Haze hybrids, it is genetic and is going to happen under a perfect room. A first-time sativa grower frequently spends a month chasing a fault that is not a problem, lowering lights and heat only slowing an already slow flower further. The listing rarely says which kind you should expect; the lineage generally does.
Flowering time
The figure of weeks from the start of flowering and harvest, and the single most frequently misunderstood number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, rather than from germination, so a “fourteen-week” sativa grown after an eight-week vegetative stage is a twenty-two-week plant. Breeders also quote the shorter end of the range, since the other end moves less seed.
Sativa plants take anywhere from ten weeks to more than twenty, and the longest strain in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be filtered by this figure, which is a reasonable first pass for a grower on a fixed timetable. A grower who allows four weeks to the figure the pack states is rarely caught out.
