Sativa seeds come with more jargon attached than any other kind of cannabis seed, and most of it says a certain thing to a botanist, another to a breeder and something different again to the grower standing in front of the listing. 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 fixed number, a “sativa-dominant” tag taken as a statement of effect, a landrace bought as if it were a modern hybrid. The entries below are put together with the range at https://hazesativaseeds.com open as the concrete examples, because it runs heavily to the classic end of the category where the words carry the most weight most; the meanings though hold to any sativa seed from any shop. They are in no particular order, since not one of them makes sense without the rest.
Equatorial
Describes plants from regions in which daylength barely varies through the year, which means where the plant does not develop a sharp response to shortening days. Such plants frequently start flowering slowly at a conventional twelve-hour light cycle, because twelve hours is, for them, an unremarkable day rather than a signal.
The practical fix, passed around among sativa growers for decades, is to cut the light further: eleven hours, occasionally ten, particularly during the last weeks. It loses a little yield and gains an earlier clearer end. A listing which says “equatorial” is telling you this in one word, and a grower who takes it as mere origin has missed the instruction inside it.
Landrace versus heirloom
A population of plants adapted over generations to a particular region by the local growers and climate alike, rather than by modern breeding. Colombian, Thai, Malawian and Oaxacan stock are the classic sativa examples. A landrace is variable, rather than a one plant: within a pack the flowering times, finishing times and aromas 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 as a finished product. It carries habits that make sense in an equatorial field, such as a frame that no tent can hold and a flowering rhythm tuned to an equatorial daylength most growers cannot provide. “Heirloom” in a listing usually refers to a landrace that has been grown out somewhere for some generations, often with a degree of selection towards tent life; it is nearer to manageable but nonetheless far from a hybrid. A seller offering “landrace” without an collection point and a reproduction count is using the word as a flavour, and the seeds should be priced accordingly.
Terpinolene
A terpene present in large proportion in a lot of classic sativa lines and accounting for most of what people mean as the “sativa” aroma: green, woody, lemon and slightly sweet all at once. It is fragile, driven off quickly by hot drying, and terpinolene degrades faster in the cure than the earthier terpenes which lead most tent lines.
To a seed buyer the name earns two things. Where a listing lists terpinolene among the lead terpene, the line probably carries real old-sativa genetics whatever the label claims. And where the grower are after that profile to survive to the jar, the cure is going to be slow and cool; a fast dry turns a terpinolene line to something that tastes of very little and leaves nothing of what the pack described.
Stretch
The burst of upward growth that comes after the switch to flowering. Indica-leaning plants gain half again; sativas routinely double, and some landrace lines go further. The stretch continues three to four weeks and will not be stopped once it begins, merely bent sideways by training.
In practical terms, the stretch multiplier is a number worth read ahead of choosing 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. Growers moving over from indica stock nearly always flip far too late the first time, and the lesson is written on the ceiling of the tent.
Latitude
The single number that determines if a sativa can ripen outdoors, and one that no pack states. Long-flowering lines require the autumn days to go on late enough for the plant ripen; at high latitudes the frost arrives first, and the grower harvests a half-finished plant in the end of October or else loses it rot in November. The further south, in the northern hemisphere, the later the season stretches, and Mediterranean and low-latitude gardens can finish plants that temperate gardens cannot.
The usable reading of a seed listing: an “outdoor” line harvest month is given for the breeder’s home latitude, normally a point within temperate Europe or the western United States, and each step north of that moves the finish later towards the frost. A grower north of roughly the fiftieth parallel who is after a long-flowering sativa outdoors is shopping for an autoflower or else a covered space, not a longer summer.
Sativa-dominant
A catalogue term rather than a measurable one. It usually indicates that the larger share of a hybrid’s lineage are described as sativa by the breeder who drafted the listing, and sometimes means nothing more than that the flowers are airier or the aroma brighter than the that breeder’s indica-labelled releases.
The experience people associate with the word, clear-headed rather than sedating, is governed more by terpene profile and by THC balance than by ancestry, and plenty of “sativa-dominant” releases produce a flat sleepy effect while plenty of the opposite lines do exactly the opposite. For a buyer the percentage is useful as a loose hint to growth habit, flowering time and stretch; for a guide to effect it is next to worthless unless accompanied by the terpene notes.
Flowering time (and what it is counted from)
The number of weeks between the start of flowering and maturity, which is the one most misread figure on a sativa pack. For photoperiod seed it is measured from the day the light drops to twelve hours, rather than from sowing, so a “fourteen-week” sativa grown after a ordinary vegetative period is a five-month plant. Breeders additionally quote the optimistic end of a spread, since the other end moves less seed.
Sativa plants run everywhere from ten weeks to more than twenty, and the longest strain in the Haze Sativa Seeds range is at about 16 weeks from the switch. The catalogue can be filtered by that number, which is a sensible first pass if you have a grower on a tight schedule. A grower who adds four weeks to whatever the pack says is seldom caught out.
Haze
In its first sense a specific family of plants bred in 1970s California from Mexican, Colombian and South Indian landraces, and later kept and refined in the Netherlands. The Haze grows tall, fills out sparsely, flowers for twelve to sixteen weeks and smells of incense, citrus and something sharp that no other line exactly has.
In its looser sense “Haze” is whatever hybrid which contains a share of that family, and today is a great many of the sativa-leaning market. A listing that says “Haze” and gives no parents could be mostly percent original classic family or a sixteenth of it, and the grow character follows the fraction, not the name. The working question is never “is it a Haze” but “how much, and via which parent”.
Hermaphroditism in long-flowering lines
The production of male flowers on a female plant, typically late in flower and often in response to stress. Almost every cannabis population carries some capacity to it; long-flowering plants show it more often, and the reason is one plain one: fourteen weeks of flower is fourteen weeks of exposure for a light leak, a temperature spike or a late watering to set it off, and an old that has waited beyond its intended end often throws a few late pollen flowers on its own as a last effort to make seed.
Not one of this makes a sativa strain unstable as a matter of course; it means the grower’s consistency count over a longer stretch. Light-tight room, stable conditions and harvesting when the plant is ready and not two weeks after take away most of the risk. A listing which mentions a breeder tests parents for intersex traits is saying something more for a sativa than on anything other category.
