Sativa seeds come with more jargon attached than any other category of cannabis seed, and most of it means one thing to a botanist, another to a breeder and a third to the grower standing in front of the listing. A failed 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” label taken as a statement of character, a landrace chosen as if it were a modern hybrid. The entries below are put together with the range at https://hazesativaseeds.com open for reference, because it runs strongly towards the classic end of the spectrum where the words carry the most weight most; the definitions themselves apply to any sativa seed from any seller. They are in no particular order, because not one of them is usable on its own without the rest.
Sativa-dominant
The catalogue category rather than a botanical one. The phrase usually indicates that more of a hybrid’s parents were classed as sativa by whoever drafted the listing, and sometimes signals no more than that the flowers are longer or the smell brighter than the same breeder’s other lines.
The experience people connect with a word, lively instead of heavy, is governed far more by terpene profile and by THC balance than it is by the sativa fraction, and plenty of “sativa-dominant” hybrids produce a heavy sleepy result and a good number of indica-labelled lines do the opposite. For a buyer the label is worth something for a loose hint to growth habit, flowering time and stretch; as a predictor to effect it is next to worthless without the aroma notes.
Equatorial
Describes plants out of latitudes in which daylength hardly varies through the year, which means where the plant never develop a strong response to changing days. Such plants frequently flower slowly at a conventional twelve-hour light cycle, since twelve hours is, for them, an unremarkable day rather than a signal.
The practical response, passed down among sativa growers for decades, is to cut the light more: eleven hours, occasionally ten, especially during the last weeks. It costs a little yield and gains a earlier clearer finish. A listing that says “equatorial” is warning you about this with one word, and a grower who takes it as a note on geography misses the instruction hidden in it.
Stretch
The surge of vertical growth that follows the change to flowering. Most tent-bred plants add half again; sativas commonly double, and a few landrace lines go further. The stretch lasts three to four weeks and cannot be stopped once it begins, merely redirected by training.
In practical terms, a stretch figure is a number worth reading ahead of deciding when to switch. A sativa switched at sixty centimetres centimetres inside a two-metre tent is touching the lamp before week four of flower; one switched at thirty centimetres has room. People coming from indica stock almost always switch too late the first time, and the lesson is visible on the ceiling of the tent.
Foxtailing (and when it is not a fault)
The tendency of certain flowers to grow fresh calyx clusters on top of old ones, producing towered, open buds rather than round ones. In the majority of tent-bred strains it is a stress response, usually caused by light that is too close or temperatures that is too high, and the advice is to correct the cause.
In a good number of sativas, especially Southeast Asian and some Haze lines, it is genetic and will happen under a flawless room. A new sativa grower often spends a month chasing a fault that is not there, dropping lights and temperatures only delaying an already slow flower even more. The breeder seldom says which kind you should expect; the lineage usually tells you.
Flowering time
The number of weeks between the start of flowering and maturity, which is the single most misread figure on a sativa pack. With photoperiod seed it is counted from the day the light is cut to twelve hours, rather than from sowing, so a “fourteen-week” sativa grown with an ordinary vegetative stage is a five-month plant. Breeders also give the shorter end of the range, because the other end moves less seed.
Sativa plants take anywhere from ten weeks to well over twenty, and the longest line in the Haze Sativa Seeds range is at about 16 weeks from the flip. The catalogue can be sorted by that number, which is a reasonable first step for a room on a tight timetable. A grower who allows four weeks on top of whatever the pack says is rarely caught out.
Hermaphroditism in long-flowering lines
The appearance of male flowers on a female plant, usually late in flower and often in response to stress. Every cannabis population has some tendency to it; long-flowering lines show it more, and the reason is one plain reason: fourteen weeks of flower is sixteen weeks of opportunity for a timer leak, a heat spike or a late watering that can set it going, and an plant that has already waited past its intended end frequently throws a few desperate male sacs on its own as a final effort to set seed.
Not one of these makes a sativa line unstable by course; it means the grower’s consistency matter for a longer stretch. A sealed room, steady conditions and cutting the moment the plant is ready and not a weeks later remove most of the problem. A listing which mentions the breeder tests parents for hermaphrodite traits is worth more on a sativa than for anything other category.
Haze
Originally a particular line of plants bred in coastal California from Mexican, Thai and Thai landraces, and later kept and worked in the Netherlands. A true Haze grows tall, branches openly, takes for twelve to to sixteen weeks and carries a scent of spice, pine and something metallic that no other line exactly has.
In its second sense “Haze” is whatever cross that carries a share of that family, and today is most of the sativa-leaning catalogue. A listing which says “Haze” and gives no lineage could be eighty percent original old family or a small fraction of it, and the flowering character tracks the share, not the name. The useful question is never “is it a Haze” but “how much, and via which parent”.
Terpinolene
A terpene found in high amounts in a lot of old sativa strains and accounting for most of what people mean as the “sativa” aroma: green, piney, citrus and faintly sweet at once. It is volatile, driven off quickly by fast drying, and it degrades faster in storage than the earthier terpenes that dominate most tent lines.
To a seed buyer the name does two things. When a listing names terpinolene as the lead terpene, the strain most likely has real Haze-era ancestry regardless of what the label says. And where the grower wants that profile to still be there to the jar, the drying is going to be slow and cool; a warm drying room turns a terpinolene line into a flower that smells of hay and no trace of what the pack described.
Landrace versus heirloom
A population of plants adapted over centuries to a particular region by local climate and climate alike, and not by modern selection. Colombian, Colombian, Malawian and Mexican stock are the classic sativa cases. A landrace is a spread, not a one plant: within a pack the heights, flowering times and smells range far more than in a tent-bred hybrid, and this spread is the whole value of keeping one.
The trap is buying a landrace like a finished hybrid. It brings traits that make sense in an open field, including a frame no tent can contain and a flowering clock tuned to an equatorial daylength the majority of growers never provide. “Heirloom” on a listing usually refers to a landrace that has been grown out away from its origin for a number of generations, typically with light selection for tent conditions; it is closer to manageable but nonetheless not a hybrid. A seller listing “landrace” without a origin region and a generation history is applying the word loosely, and the seeds should be priced with that in mind.
Latitude (outdoor sativas)
The one figure that determines if a sativa will finish outdoors, and a number no pack states. Equatorial lines require a autumn days to go on late enough to let the plant finish; at northern latitudes the frost comes before that, and the grower cuts an half-finished plant in the end of October or else watches it to mould in November. The closer to the equator, in the northern hemisphere, the longer the season runs, and coastal or low-latitude growers are able to finish lines that temperate growers never will.
The usable rule of a seed listing: an “outdoor” line finishing date is given for the breeder’s home latitude, usually somewhere in temperate Europe or the west coast of the United States, and each step north of that pushes the finish back towards the frost. A grower north of about the fiftieth parallel that is after a true sativa outdoors needs to be looking for a sativa autoflower or else a greenhouse, and not a longer season.
