Sativa seeds come with more jargon attached than any other kind of cannabis seed, and a good deal of it means one thing to a botanist, another 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 read in the wrong sense: a flowering time read as a fixed number, a “sativa-dominant” tag read as a statement of effect, a landrace bought like it were a tent-bred hybrid. The entries below are written with the range at https://hazesativaseeds.com open for the concrete examples, since it leans strongly to the classic end of the spectrum where the vocabulary matter most; the meanings though apply to any sativa seed from any shop. They are given in no special order, because none of them makes sense on its own without the rest.
Haze (the family, not the smell)
Originally a particular family of plants bred in 1970s California from Mexican, Thai and South Indian landraces, and then kept and worked in the Netherlands. The Haze runs tall, fills out 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 reproduces.
In its second sense “Haze” is whatever hybrid which contains a share of that family, and by now is most of the sativa-leaning market. A listing that says “Haze” without parents may be eighty percent original classic family or one sixteenth of it, and the flowering time follows the fraction, not the name. The working question is not “is it a Haze” but “how much, and through which parent”.
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 population carries a degree of tendency to do; sativa lines show it more, for a plain one: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a late watering to set it going, and an plant plant has already waited past its natural finish often produces a few desperate pollen flowers on its own as a last attempt to set seed.
None of these makes a sativa line weak as a matter of nature; it means the room’s discipline matter for a longer stretch. Light-tight tents, stable temperatures and cutting the moment the plant is done and not a weeks later remove the greater part of the risk. A listing that mentions a breeder screens parents for intersex tendency is saying something more on a long-flowering line than on any else.
Foxtailing
The habit of certain flowers to grow new calyx growth on top of old ones, producing spired, open buds rather than round ones. In most tent-bred strains it is a stress response, usually from light that is too close or a room that is too high, and the standard response is to correct the room.
In many sativas, especially Southeast Asian and some Haze hybrids, it is built in and will occur under a perfect room. A new sativa grower frequently spends weeks hunting a problem that was never a problem, dropping lights and temperatures and slowing a long flower even more. The listing rarely warns which kind to expect; the lineage generally does.
Sativa-dominant
A catalogue term and not a botanical one. The phrase usually means that the larger share of a hybrid’s lineage were described as sativa according to the breeder who wrote the description, which occasionally means nothing more than a certain the flowers are airier or the aroma brighter than the same breeder’s indica-labelled releases.
The effect people connect with a word, clear-headed rather than sedating, is governed far more by terpene profile and the cannabinoid content than it is by the sativa fraction, and a good number of “sativa-dominant” hybrids deliver a heavy couch result and plenty of indica-labelled lines deliver exactly the reverse. To a buyer the label is worth something as a loose guide to growth habit, flowering time and stretch; for a predictor to effect it is next to worthless without the aroma description.
Flowering time
The number of weeks between the start of flowering and harvest, and the single most frequently misunderstood figure 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 after a eight-week vegetative period is a five-month plant. Breeders additionally give the shorter end of a spread, because the other end sells fewer seed.
Sativa plants run anywhere from ten weeks to well over twenty, and the slowest line in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be filtered by that figure, which is the reasonable first pass for a room with a fixed timetable. A grower who allows four weeks to whatever the pack says is rarely disappointed.
Latitude
The one number that determines if a sativa can finish outdoors, and one no pack prints. Equatorial plants need the run of shortening days to go on late enough for the plant finish; in high latitudes the frost comes first, and the grower cuts an half-finished plant in late October or loses it to mould in November. The further to the equator, in a northern hemisphere, the later the season stretches, and coastal or low-latitude growers are able to ripen plants that temperate growers cannot.
The practical rule of a seed listing: an “outdoor” sativa harvest month is stated for the breeder’s home latitude, usually somewhere in temperate Europe or the west coast of the United States, and every step north of that moves the date back into the weather. A grower north of roughly the fiftieth parallel who wants a long-flowering sativa outdoors is looking for a sativa autoflower or a covered space, and not a longer season.
Stretch
The surge of upward growth which comes after the change to flowering. Indica-leaning plants gain half again; sativas routinely double, and some equatorial types go further. The stretch lasts three to four weeks and cannot be stopped after it has started, only redirected by training.
In practical terms, a stretch multiplier is a fact worth read before deciding when to switch. 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 almost always switch far too late the first time, and the consequence is written on the ceiling of the tent.
Equatorial
Refers to plants from latitudes where daylength hardly varies across the year, and where the plant does not evolved a sharp reaction to changing days. Such plants often flower slowly at a conventional twelve-hour schedule, since twelve hours is, for them, an ordinary day rather than a signal.
The working response, handed down among sativa growers for decades, is to cut the light more: eleven hours, occasionally ten, especially in the last weeks. It costs some yield yield and gains an more decisive finish. A listing that uses “equatorial” is telling you about this in one word, and a grower that reads it as a note on geography has missed the instruction inside it.
Terpinolene
A terpene found in high proportion in a lot of classic sativa lines and accounting for most of the thing growers mean as a “sativa” aroma: fresh, woody, lemon and faintly sweet all at once. It is volatile, driven off easily through hot drying, and terpinolene fades more quickly during storage than the earthier terpenes which dominate most tent stock.
For a seed buyer the name does two things. Where a listing lists terpinolene as the lead aromas, the strain probably has substantial Haze-era genetics regardless of what the label claims. And where the grower are after that profile to still be there to the jar, the cure is going to be slow and cool; a warm dry flattens a terpinolene line into a flower that smells of very little and leaves nothing of what the pack promised.
