Sativa seeds come with more jargon around them than any other category of cannabis seed, and a good deal of it means one thing to a botanist, something else to a breeder and a third to the grower standing in front of the pack. The failed sativa grow nearly always goes back to a word that was read in the wrong one of those senses: a flowering time taken as a promise, a “sativa-dominant” tag taken as a description of effect, a landrace bought like it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand as reference, because it runs strongly towards the classic end of the spectrum and that is where the vocabulary carry the most weight most; the definitions themselves hold to any sativa seed from any seller. They are in no special order, because not one of them makes sense without the rest.

Sativa-dominant

A marketing term and not a botanical one. The phrase generally means that more of a hybrid’s parents were classed as sativa by whoever drafted the listing, and occasionally signals nothing more than a certain the flowers are airier or the aroma brighter than the that breeder’s other lines.

The experience people associate with the word, clear-headed instead of heavy, is driven more by terpene chemistry and the cannabinoid balance than by ancestry, and plenty of “sativa-dominant” hybrids produce a flat sleepy result while a good number of indica-labelled lines do the reverse. To a grower the label is worth something for a rough hint to growth habit, flowering time and stretch; as a guide to how it feels it is close to useless without the terpene description.

Intersex tendency

The production of pollen-bearing flowers on a female plant, usually late in flower and often under stress. Every cannabis population carries some capacity for it; long-flowering lines express it more often, for a plain one: fourteen weeks of flower is fourteen weeks of opportunity for a light leak, a heat spike or a late watering that can set it off, and an old plant has already gone beyond its natural finish often produces a few desperate male flowers on its own as a last attempt to set seed.

Not one of these means a sativa strain unstable as a matter of nature; it means the grower’s consistency count for longer. A sealed room, steady conditions and harvesting when the plant is done and not a week after remove the greater part of the problem. A listing which mentions the breeder tests parents for hermaphrodite tendency is saying something worth hearing for a sativa than for any other category.

Equatorial (the twelve-hour problem)

Refers to lines from regions in which daylength barely varies across the year, which means where the plant never evolved a sharp reaction to shortening days. Such lines often flower slowly under a standard twelve-hour schedule, because twelve hours is, to them, an ordinary day and not a signal.

The working fix, handed around between sativa growers over decades, is to cut the light further: eleven hours, sometimes ten, especially during the final weeks. It loses a little yield and buys a earlier clearer end. A listing that uses “equatorial” is warning you this in one word, and a grower who reads it as mere geography has missed the instruction inside it.

Foxtailing (and when it is not a fault)

The tendency of certain flowers to grow new calyx growth on top of old ones, producing towered, open buds instead of dense ones. In most indica-leaning lines it is a heat response, usually caused by light too close or a room that is too high, and the standard response is to correct the cause.

In many sativas, above all Southeast Asian and some Haze hybrids, it is built in and is going to happen in a perfect room. A first-time sativa grower often wastes weeks hunting a fault that is there, dropping lights and temperatures only delaying an already long flower further. The breeder rarely says which kind you should expect; the lineage generally does.

Terpinolene

A terpene found in large amounts in a lot of classic sativa strains and responsible for most of the thing people mean as a “sativa” aroma: fresh, woody, lemon and slightly floral at once. It is fragile, lost easily by fast drying, and terpinolene degrades more quickly in the cure than the heavier terpenes that lead most tent lines.

To a seed buyer the name does two things. When a listing lists terpinolene as the lead terpene, the line probably has substantial old-sativa genetics regardless of what the label claims. And where the grower are after that profile to survive by the jar, the drying is going to be cool and slow; a warm drying room flattens a terpinolene line into something that smells of hay and leaves nothing of what the pack described.

Haze (the family, not the smell)

Originally a specific line of plants bred in coastal California from Mexican, Colombian and Thai parents, and then kept and worked in the Netherlands. The Haze runs tall, fills out openly, flowers for twelve sixteen weeks and carries a scent of incense, citrus and something sharp that no other line quite has.

In its looser sense “Haze” is whatever hybrid that contains a share of that family, which today is most of the sativa-leaning catalogue. A listing that reads “Haze” without parents could be eighty percent the old family or a small fraction of it, and the grow time follows the share, not the name. The useful question is not “is it a Haze” but “how much, and through which parent”.

Stretch

The burst of vertical growth that comes after the switch to flowering. Most tent-bred plants gain around half their height again; sativas routinely double, and a few landrace types triple. The stretch lasts three to five weeks and will not be stopped after it has started, only redirected by training.

In practical terms, the stretch figure is the number worth reading before choosing when to flip. A sativa flipped at sixty centimetres centimetres in a standard tent is touching the lamp by week four of flower; one flipped 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 visible on the ceiling of the tent.

Landrace

A population of plants shaped over centuries to a particular place by local climate and climate alike, rather than by deliberate selection. Thai, Thai, Congolese and Oaxacan stock are the sativa cases. A landrace is a spread, rather than a one plant: within a pack the heights, finishing times and aromas range far more than any tent-bred hybrid, and that spread is the whole value of growing one.

The mistake is buying a landrace as a finished hybrid. It brings habits that make sense in an open field, such as a frame no tent can contain and a flowering clock set to a equatorial daylength most growers never offer. “Heirloom” in a listing generally refers to a landrace that has been grown out away from its origin over some generations, often with light selection towards indoor life; it is closer to usable but still not uniform. A seller listing “landrace” without a collection point and a generation count is applying the word loosely, and the seeds should be priced with that in mind.

Flowering time (and what it is counted from)

The number of weeks between the onset of flowering and harvest, which is the single most frequently misread figure on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, rather than from germination, so a “fourteen-week” sativa started after an ordinary vegetative period is a twenty-two-week plant. Breeders also give the optimistic end of the range, since the other end moves less seed.

Sativa plants run everywhere from ten weeks to well over twenty, and the longest strain in the Haze Sativa Seeds range comes in at about 16 weeks from the flip. The catalogue can be sorted by this figure, which is the sensible first pass if you have a grower with a fixed schedule. A grower who allows four weeks on top of whatever the pack says is seldom caught out.