Sativa seeds come with more vocabulary around them than any other kind of cannabis seed, and most of it says a certain thing to a botanist, something else to a seed company and something different again to the grower trying to make a decision in front of the pack. The disappointing sativa grow usually goes back to a word that was understood in the wrong one of those senses: a flowering time taken as a promise, a „sativa-dominant“ label read as a statement of character, a landrace chosen as if it were a tent-bred hybrid. The entries below are written with the range at https://hazesativaseeds.com to hand as reference, since it runs heavily to the long-flowering end of the spectrum and that is where the vocabulary matter most; the meanings though hold to any sativa seed from any seller. They are in no special order, since none of them is sense on its own without the rest.
Terpinolene (the „sativa smell“)
A aromatic compound present in large amounts in a lot of old sativa strains and accounting for most of the thing people mean as a „sativa“ aroma: green, piney, citrus and slightly sweet at once. It is fragile, lost quickly by fast drying, and it fades faster in the cure than the heavier terpenes which lead indica-leaning stock.
To a seed buyer the name does two jobs. Where a listing names terpinolene as the lead aromas, the strain probably has real old-sativa genetics regardless of what the label claims. And when the you wants that smell to still be there by the jar, the drying is going to be slow and slow; a fast dry flattens a terpinolene sativa to a flower that smells of hay and nothing of what the pack promised.
Landrace
A population of plants shaped through generations to one place by local growers and climate alike, and not by deliberate selection. Colombian, Colombian, Malawian and Mexican lines are the classic sativa examples. A landrace is a spread, not a single plant: within a pack the flowering times, flowering times and smells spread widely than any tent-bred hybrid, and that spread is the point of growing one.
The trap is treating a landrace like a modern product. It carries traits that made sense in an equatorial field, including a frame no tent can hold and a flowering clock tuned to an daylength the majority of growers cannot offer. „Heirloom“ on a listing usually means a landrace that has been reproduced somewhere over a number of generations, often with light selection towards tent life; it is closer to usable but nonetheless far from a hybrid. A seller offering „landrace“ that does not give a collection region and a reproduction count is applying the word loosely, and the seeds should be judged accordingly.
Intersex tendency
The production of male flowers on a female plant, usually towards the end in flower and frequently under stress. Almost every cannabis line has a degree of tendency for it; long-flowering plants express it more often, and the reason is a simple one: sixteen weeks of flower is sixteen weeks of exposure for a timer leak, a heat spike or a missed watering to set it off, and an old plant has already gone past its natural finish often throws a few desperate male flowers on its own in a final effort to make seed.
Not one of these means a sativa strain weak by course; it means the grower’s consistency matter for longer. A sealed room, steady temperatures and cutting the moment the plant is done and not a weeks after remove the greater part of the problem. A listing which mentions the breeder tests parents for intersex tendency is saying something worth hearing on a long-flowering line than on anything else.
Flowering time (and what it is counted from)
The figure of weeks between the start of flowering and maturity, which is the single most frequently misread number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, rather than from sowing, so a „fourteen-week“ sativa started with a ordinary vegetative period is a five-month plant. Breeders additionally quote the optimistic end of a range, since the other end moves fewer seed.
Long-flowering plants take anywhere from ten weeks to well over twenty, and the longest strain in the Haze Sativa Seeds range comes in at about 16 weeks after the switch. The catalogue can be sorted by that figure, which is a sensible first pass for a room with a fixed timetable. A grower who allows four weeks to whatever the pack says is seldom disappointed.
Foxtailing
The habit of certain flowers to grow new bud clusters on top of old ones, producing towered, irregular buds instead of round ones. In the majority of indica-leaning strains it is a heat response, usually caused by light too close or temperatures too high, and the advice is to fix the cause.
In a good number of sativas, especially Southeast Asian and certain Haze hybrids, it is built in and is going to occur under a flawless room. A first-time sativa grower frequently wastes a month hunting a problem that is a problem, lowering lights and temperatures only slowing an already long flower even more. The breeder seldom warns which type you should expect; the parentage generally tells you.
Sativa-dominant (the label)
A marketing term and not a measurable one. It generally means that the larger share of a hybrid’s lineage are classed as sativa by the breeder who wrote the description, which sometimes means nothing more than a certain the buds are longer or the aroma brighter than the same breeder’s indica-labelled releases.
The experience people connect with a word, clear-headed rather than sedating, is governed far more by terpene chemistry and by THC content than it is by the sativa fraction, and plenty of „sativa-dominant“ hybrids produce a heavy sleepy result while a good number of the opposite stock deliver exactly the reverse. To a grower the label is worth something for a loose guide to growth habit, flowering time and stretch; as a guide to how it feels it is next to worthless unless accompanied by the terpene description.
Stretch (the doubling)
The burst of upward growth that comes after the change to flowering. Most tent-bred plants add half their height again; sativas routinely double, and some equatorial types go further. The stretch lasts two to four weeks and cannot be stopped after it begins, only bent sideways by training.
In practical terms, a stretch figure is the number to reading before deciding when to switch. A sativa switched at sixty centimetres in a two-metre tent is at the lamp before week four of flower; one switched at thirty centimetres has room. Growers coming over from indica strains nearly always flip far too late the first time, and the consequence is written on the ceiling of the tent.
Latitude (outdoor sativas)
The single number that determines whether a sativa will ripen outdoors, and a number no pack states. Long-flowering plants require a run of shortening days to go on long enough for the plant to finish; at high latitudes the frost arrives before that, and the grower cuts an unripe plant in the end of October or watches it rot in November. The closer south, in the northern hemisphere, the later the window runs, and Mediterranean and low-latitude gardens are able to finish lines that temperate gardens cannot.
The usable reading for a seed pack: an „outdoor“ line harvest month is given for the breeder’s own latitude, usually a point in temperate Europe or the west coast of the United States, and every degree further north of that pushes the finish later into the frost. A grower north of about the fiftieth parallel who wants a long-flowering sativa outdoors needs to be looking for a sativa autoflower or else a covered space, not a better season.
Equatorial (the twelve-hour problem)
Describes lines out of regions where daylength barely varies across the year, and where the plant does not develop a strong reaction to changing days. Such lines often start flowering slowly at a conventional twelve-hour schedule, since twelve hours is, to them, an ordinary day rather than a signal.
The practical response, passed around among sativa growers over decades, is to cut the light more: eleven hours, sometimes ten, particularly in the final weeks. It costs some little yield and gains a earlier clearer end. A listing which uses „equatorial“ is telling you this with one word, and a grower that reads it as mere geography has missed the instruction inside it.
Haze
Originally a specific line of plants put together in 1970s California from Colombian, Thai and South Indian parents, and later preserved and refined in the Netherlands. The Haze runs tall, fills out openly, takes for twelve to sixteen weeks and carries a scent of spice, citrus and something metallic that no other line quite has.
In its looser sense „Haze“ is whatever hybrid which contains a share of that family, and by now is a great many of the sativa-leaning market. A listing that reads „Haze“ and gives no lineage could be mostly percent original old family or a sixteenth of it, and the grow character tracks the share, not the name. The working question is never „is it a Haze“ but „how much, and via which parent“.