Sativa seeds arrive with more jargon around them than any other kind 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 pack. A 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” label read as a description of character, a landrace chosen as if it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com open as the concrete examples, since it leans strongly to the long-flowering end of the spectrum where the words matter most; the definitions though hold to any sativa seed from any shop. They are given in no particular order, because not one of them makes sense without the rest.

Equatorial

Refers to lines from latitudes in which daylength barely changes through the year, which means where the plant never evolved a strong response to changing days. These plants frequently start flowering slowly under a conventional twelve-hour schedule, because twelve hours is, to them, an unremarkable day and not a signal.

The working fix, passed around between sativa growers for decades, is to cut the light further: eleven hours, sometimes ten, particularly during the last weeks. It costs a little yield and buys an more decisive end. A listing which says “equatorial” is telling you about this with one word, and a grower that takes it as mere origin has missed the instruction inside it.

Haze (the family, not the smell)

Originally a particular line of plants put together in 1970s California from Mexican, Colombian and Thai landraces, and later kept and refined in the Netherlands. The Haze runs tall, fills out openly, takes for twelve to sixteen weeks and carries a scent of spice, pine and a note metallic that no other line quite reproduces.

In its second sense “Haze” is any hybrid which carries a share of that family, which by now is most of the sativa-leaning market. A listing that reads “Haze” without lineage may be mostly percent original classic family or a 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”.

Hermaphroditism in long-flowering lines

The production of male flowers on a female plant, typically towards the end in flower and often under stress. Every cannabis line carries a degree of tendency for it; sativa lines show it more, for one plain one: fourteen weeks of flower is fourteen weeks of exposure for a light leak, a heat spike or a late watering that can set it off, and an old that has already waited beyond its intended end frequently produces a few desperate pollen sacs on its own in a last attempt to make seed.

None of this means a sativa strain weak as a matter of nature; it means the grower’s discipline count over longer. Light-tight tents, stable temperatures and cutting when the plant is done rather than a weeks later take away the greater part of the problem. A listing which mentions the breeder tests parents for intersex tendency is worth worth hearing for a sativa than for any other category.

Terpinolene (the “sativa smell”)

A terpene found in large amounts in many old sativa lines and accounting for most of what people describe as a “sativa” smell: green, piney, lemon and faintly floral all at once. It is fragile, lost easily through fast drying, and it degrades more quickly during storage than the heavier terpenes that lead most tent stock.

To a seed buyer the word does two jobs. Where a listing names terpinolene among the lead aromas, the strain most likely carries substantial old-sativa ancestry whatever the label claims. And when the grower wants that smell to still be there by the jar, the cure has to be slow and slow; a fast dry flattens a terpinolene line into something that tastes of very little and leaves nothing of what the pack promised.

Stretch

The surge of vertical growth which comes after the switch to flowering. Most tent-bred plants gain around half their height again; sativas commonly double, and some equatorial types go further. The stretch lasts two to four weeks and will not be stopped once it begins, merely bent sideways by training.

In practical terms, a stretch figure is a fact to reading ahead of choosing when to flip. A sativa switched at sixty centimetres in a standard tent is at the lamp by week four of flower; one flipped at thirty centimetres centimetres has room. Growers coming from indica strains almost always flip far too late the first time, and the consequence is written on the ceiling of the tent.

Flowering time (and what it is counted from)

The figure of weeks from the onset of flowering and harvest, and the one most frequently misread number on a sativa pack. For photoperiod seed it is measured from the day the light is cut to twelve hours, rather than from sowing, so a “fourteen-week” sativa grown after an eight-week vegetative period is a twenty-two-week plant. Seed companies additionally quote the shorter end of the spread, since the longer end sells less seed.

Long-flowering lines run anywhere from ten weeks to well over twenty, and the slowest strain in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be sorted by this figure, which is a reasonable first pass for a room on a fixed timetable. A grower who allows four weeks to the figure the pack says is rarely caught out.

Latitude (outdoor sativas)

The single figure that determines whether a sativa can ripen outdoors, and a number no pack prints. Equatorial lines require a autumn days to go on late enough for the plant finish; at northern latitudes the frost arrives first, and the grower harvests a unripe plant in the end of October or watches it to mould in November. The closer south, within a northern hemisphere, the later the season stretches, and coastal or subtropical gardens are able to ripen lines that temperate gardens cannot.

The usable rule for a seed pack: an “outdoor” sativa finishing month is given for the breeder’s home latitude, normally a point within temperate Europe or the western United States, and each degree further north of it pushes the date later towards the weather. A grower north of roughly the fiftieth parallel that is after a long-flowering sativa outdoors needs to be looking for an autoflower or else a greenhouse, not a longer summer.

Foxtailing

The habit of certain flowers to push out new bud clusters on top of existing ones, giving spired, irregular buds instead of round ones. In most indica-leaning strains it is a stress response, typically caused by light too close or a room too high, and the standard response is to correct the cause.

In a good number of sativas, especially Southeast Asian and some Haze lines, it is built in and will happen in a perfect room. A new sativa grower often spends weeks chasing a fault that was never there, dropping lights and temperatures only delaying a long flower even more. The breeder rarely warns which kind to expect; the parentage generally tells you.

Landrace versus heirloom

A population of plants shaped over generations to one region by the local growers and growers together, and not by modern breeding. Thai, Thai, Malawian and Mexican stock are the classic sativa examples. A landrace is variable, rather than a one plant: within a pack the flowering times, flowering times and aromas spread far more than in a tent-bred hybrid, and that variation is the point of growing one.

The mistake is buying a landrace like a modern product. It carries traits that make sense in an open field, including a frame no tent can contain and a flowering clock set to an equatorial daylength the majority of growers cannot offer. “Heirloom” in a listing usually refers to a landrace that has been reproduced away from its origin over some generations, typically with light selection for tent conditions; it is nearer to manageable but nonetheless not a hybrid. A shop listing “landrace” without a collection region and a reproduction count is applying the word as a flavour, and the pack should be judged accordingly.