Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and most of it means a certain thing to a botanist, another to a seed company and a third to the grower standing in front of the pack. A failed sativa grow nearly always traces back to a word that was read in the wrong one of those senses: a flowering time read as a promise, a « sativa-dominant » tag taken as a statement of effect, a landrace bought as if it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand as the concrete examples, since it runs heavily towards the long-flowering end of the category where the vocabulary matter most; the meanings themselves hold to any sativa seed from any shop. They are in no particular order, since not one of them is usable on its own without the rest.
Stretch
The burst of vertical growth that follows the switch to flowering. Most tent-bred plants gain half their height again; sativas commonly double, and a few equatorial types triple. The stretch lasts two to four weeks and cannot be halted once it has started, merely bent sideways by training.
In practical terms, the stretch figure is a fact to read ahead of deciding when to switch. A sativa switched at sixty centimetres centimetres inside a standard tent is touching the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. People coming from indica stock nearly always switch far too late the first time, and the consequence is visible on the ceiling of the tent.
Equatorial (the twelve-hour problem)
Refers to plants out of regions in which daylength barely changes across the year, which means that the plant does not develop a sharp reaction to changing days. Such plants frequently start flowering reluctantly under a standard twelve-hour light cycle, since twelve hours is, to them, a mild unremarkable day and not a signal.
The working response, handed down between sativa growers for decades, is to shorten the light further: eleven hours, sometimes ten, particularly in the last weeks. It costs a little yield and gains a earlier clearer end. A listing which uses « equatorial » is telling you about this in one word, and a grower who reads it as mere geography misses the instruction hidden in it.
Latitude (outdoor sativas)
The single number that determines if a sativa can ripen outdoors, and a number no pack prints. Long-flowering lines require the autumn days to continue long enough to let the plant ripen; in northern latitudes the frost arrives before that, and the grower cuts a half-finished plant in the end of October or loses it rot in November. A closer south, within a northern hemisphere, the later the season runs, and Mediterranean and low-latitude growers are able to ripen plants that temperate growers cannot.
The usable reading for a seed pack: an « outdoor » sativa harvest date is given for the breeder’s own latitude, usually a point within southern Europe or the western United States, and each degree further north of that pushes the date later towards the frost. A grower above about the fiftieth parallel that wants a true sativa in the garden needs to be looking for a sativa autoflower or else a covered space, not a longer season.
Haze
Originally a specific line of plants bred in 1970s California from Colombian, Colombian and Thai parents, and then kept and worked in the Netherlands. The Haze grows tall, fills out openly, flowers for twelve sixteen weeks and smells of incense, citrus and a note sharp that no other line exactly has.
In its second sense « Haze » is whatever cross which carries a share of that family, and today is most of the sativa-leaning market. A listing that says « Haze » and gives no lineage could be mostly percent original old family or one small fraction of it, and the flowering character tracks the fraction, not the name. The useful question is never « is it a Haze » but « how much, and via which parent ».
Landrace
A population of plants adapted through generations to a particular region by local growers and climate alike, rather than by modern breeding. Colombian, Thai, Malawian and Mexican stock are the classic sativa examples. A landrace is a spread, rather than a single plant: inside a pack the heights, flowering times and aromas spread widely than in a tent-bred hybrid, and that variation is the point of keeping one.
The mistake is buying a landrace as a modern product. It carries habits that make sense in an equatorial field, such as height no tent can hold and a flowering clock tuned to a equatorial daylength the majority of growers never offer. « Heirloom » in a listing usually refers to a landrace that has been reproduced somewhere for some generations, typically with light selection for tent conditions; it is closer to usable but still far from a hybrid. A seller listing « landrace » without an collection point and a reproduction count is applying the word loosely, and the pack should be judged accordingly.
Intersex tendency
The production of pollen-bearing flowers on a female plant, typically towards the end in flower and often in response to stress. Every cannabis line has some tendency to it; sativa plants express it more often, for a simple one: sixteen weeks of flower is fourteen weeks of opportunity for a timer leak, a temperature spike or a missed watering to set it off, and an old that has already waited past its natural end often throws a few desperate male sacs on its own in a final effort to make seed.
Not one of this means a sativa strain unstable by nature; it means the grower’s discipline matter for longer. Light-tight room, steady temperatures and cutting when the plant is ready rather than a weeks after remove the greater part of the problem. A listing which states the breeder tests parents for intersex tendency is saying something worth hearing for a long-flowering line than on anything else.
Sativa-dominant
A marketing category and not a measurable one. It generally indicates that the larger share of a hybrid’s lineage are classed as sativa according to the breeder who wrote the description, and occasionally signals no more than a certain the buds are longer or the smell sharper than the that breeder’s other releases.
The effect people connect with the word, lively instead of sedating, is governed more by terpene profile and by cannabinoid balance than by ancestry, and a good number of « sativa-dominant » releases deliver a flat sleepy effect and plenty of indica-labelled stock deliver exactly the reverse. For a buyer the label is worth something for a loose guide to growth habit, flowering time and stretch; as a predictor to how it feels it is next to useless without the terpene description.
Terpinolene
A terpene present in large proportion in many old sativa lines and responsible for much of the thing growers mean as a « sativa » aroma: fresh, woody, citrus and faintly sweet at once. It is fragile, driven off quickly through hot drying, and terpinolene fades faster during storage than the heavier terpenes which lead most tent stock.
For a seed buyer the name earns two jobs. Where a listing names terpinolene among the leading terpene, the line most likely carries substantial Haze-era genetics regardless of what the percentage claims. And when the you wants that smell to still be there to the jar, the cure has to be cool and slow; a fast drying room flattens a terpinolene sativa into a flower that smells of very little and leaves nothing of what the pack promised.
Foxtailing
The habit of certain flowers to push out fresh calyx clusters on top of old ones, giving spired, open buds rather than round ones. In the majority of tent-bred lines it is a stress symptom, usually caused by light too close or temperatures too high, and the standard response is to correct the cause.
In a good number of sativas, especially Thai and some Haze lines, it is genetic and will occur under a perfect room. A first-time sativa grower often spends a month chasing a problem that was never there, lowering lights and temperatures only slowing a long flower further. The breeder rarely warns which type you should expect; the lineage generally does.
