Sativa seeds come with more jargon around them than any other category 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 person standing in front of the pack. The disappointing sativa grow usually goes back to a word that was understood in the wrong sense: a flowering time taken as a promise, a «sativa-dominant» label read as a description of effect, a landrace chosen as if it were a modern hybrid. The entries below were written with the range at https://hazesativaseeds.com open as reference, because it leans heavily to the long-flowering end of the category and that is where the words carry the most weight most; the meanings though hold to any sativa seed from any shop. They are given in no particular order, since none of them is usable without the rest.
Equatorial
Describes lines from regions in which daylength barely varies across the year, and that the plant does not evolved a sharp reaction to shortening days. These plants frequently start flowering reluctantly under a standard twelve-hour schedule, since twelve hours is, to them, an unremarkable day and not a signal.
The practical response, passed around among sativa growers for decades, is to shorten the light further: eleven hours, occasionally ten, especially in the last weeks. It loses a little yield and buys an more clearer finish. A listing that uses «equatorial» is telling you this in one word, and a grower that reads it as a note on geography misses the instruction hidden in it.
Terpinolene (the «sativa smell»)
A terpene present in high amounts in a lot of classic sativa lines and accounting for much of what growers describe as a «sativa» aroma: green, piney, lemon and slightly floral at once. It is volatile, lost easily by hot drying, and terpinolene degrades more quickly in storage than the heavier terpenes which dominate indica-leaning lines.
For a seed buyer the name earns two jobs. When a listing lists terpinolene among the leading aromas, the line probably has substantial old-sativa ancestry regardless of what the label says. And where the you are after that profile to survive by the jar, the cure is going to be cool and slow; a fast drying room turns a terpinolene sativa to a flower that smells of very little and no trace of what the pack promised.
Landrace
A population of plants shaped through centuries to a particular place by local climate and climate together, and not by deliberate breeding. Colombian, Colombian, Malawian and Oaxacan stock are the sativa cases. A landrace is a spread, rather than a one plant: within a pack the flowering times, flowering times and smells spread far more than in a tent-bred line, and this spread is the whole value of growing one.
The mistake is buying a landrace like a finished hybrid. It carries habits that made sense in an equatorial field, including height no tent can hold and a flowering rhythm set to a equatorial daylength most growers never offer. «Heirloom» on a listing generally means a landrace that has been reproduced away from its origin over some generations, typically with light selection for tent conditions; it is closer to usable but still not a hybrid. A shop offering «landrace» without a origin region and a generation count is applying the word as a flavour, and the pack should be judged with that in mind.
Hermaphroditism in long-flowering lines
The appearance of male flowers on a female plant, typically late in flower and frequently under stress. Every cannabis line has some tendency to do; long-flowering plants show it more, and the reason is a plain one: sixteen weeks of flower is sixteen weeks of opportunity for a light leak, a temperature spike or a missed watering to trigger it going, and an plant that has already gone past its natural end often produces a few desperate pollen flowers on its own as a final attempt to make seed.
None of this makes a sativa line weak by course; it makes the room’s discipline matter for longer. A sealed room, steady temperatures and cutting when the plant is ready and not two weeks later remove the greater part of the risk. A listing that states the breeder tests parents for intersex traits is worth worth hearing for a sativa than for anything other category.
Stretch (the doubling)
The surge of upward growth that comes after the change to flowering. Indica-leaning plants gain half their height again; sativas commonly double, and a few landrace types go further. The stretch lasts three to five weeks and cannot be halted after it begins, only bent sideways by training.
In tent terms, a stretch figure is a fact worth reading ahead of deciding when to flip. A sativa switched at sixty centimetres inside a two-metre tent is at the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. Growers coming from indica stock nearly always switch far too late the first time, and the lesson is visible on the ceiling of the tent.
Flowering time (and what it is counted from)
The figure of weeks from the onset of flowering and maturity, and the one most frequently misread number on a sativa pack. With photoperiod seed it is measured from the day the light drops to twelve hours, not from sowing, so a «fourteen-week» sativa started after a eight-week vegetative period is a twenty-two-week plant. Breeders also quote the shorter end of the spread, since the other end sells less seed.
Sativa lines run everywhere from ten weeks to well over twenty, and the longest line in the Haze Sativa Seeds range comes in at about 16 weeks after the switch. The catalogue can be filtered by this number, which is a reasonable first pass if you have a grower on a fixed timetable. A grower who adds four weeks to whatever the pack states is seldom caught out.
Sativa-dominant (the label)
A marketing category and not a measurable one. It usually means that more of a hybrid’s parents are described as sativa according to whoever drafted the description, and occasionally means no more than a certain the buds are longer or the smell brighter than the that breeder’s other releases.
The effect people connect with the word, clear-headed rather than sedating, is driven more by terpene chemistry and by cannabinoid balance than it is by ancestry, and plenty of «sativa-dominant» hybrids deliver a heavy sleepy result and plenty of indica-labelled stock do the opposite. To a buyer the percentage is useful as a rough hint to growth habit, flowering time and stretch; as a guide to how it feels it is close to worthless unless accompanied by the terpene notes.
Haze (the family, not the smell)
In its first sense a specific line of plants bred in 1970s California from Colombian, Colombian and Thai parents, and later kept and refined in the Netherlands. A true Haze runs tall, fills out openly, flowers for twelve to to sixteen weeks and carries a scent of spice, citrus and something metallic that no other line exactly reproduces.
In its looser sense «Haze» is any cross that carries a share of that family, and today is most of the sativa-leaning catalogue. A listing which reads «Haze» without lineage may be mostly percent original classic family or one small fraction of it, and the flowering time tracks the share, not the name. The working question is never «is it a Haze» but «how much, and via which parent».
Foxtailing
The habit of certain flowers to push out fresh calyx growth on top of old ones, giving towered, irregular buds instead of round ones. In the majority of indica-leaning strains it is a heat symptom, usually from light that is too close or temperatures too high, and the standard response is to fix the room.
In a good number of sativas, above all Thai and some Haze lines, it is built in and will happen under a perfect room. A new sativa grower often spends a month chasing a fault that was never a problem, dropping lights and temperatures only slowing an already long flower further. The breeder rarely says which kind to expect; the lineage generally does.
