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Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and most of it means a certain thing to a botanist, another to a seed company and a third to the person standing in front of the pack. A failed sativa grow nearly always traces 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 were put together with the range at https://hazesativaseeds.com to hand as reference, since it leans strongly to the long-flowering end of the spectrum where the words matter most; the meanings themselves hold to any sativa seed from any seller. They are in no particular order, because none of them makes sense on its own without the others.

Stretch

The surge of upward growth that comes after the switch to flowering. Most tent-bred plants add around half again; sativas commonly double, and some landrace types go further. The stretch continues two to four weeks and cannot be stopped once it has started, only bent sideways by training.

In tent terms, the stretch multiplier is a number to reading ahead of deciding when to switch. A sativa switched at sixty centimetres inside a two-metre tent is touching the lamp by week four of flower; one flipped at thirty centimetres has room. People coming from indica strains almost always switch far too late the first time, and the lesson is written on the ceiling of the tent.

Flowering time (and what it is counted from)

The number of weeks from the start of flowering and harvest, which is the one most frequently misunderstood figure on a sativa pack. For photoperiod seed it is counted from the day the light is cut to twelve hours, not from germination, so a “fourteen-week” sativa grown after an ordinary vegetative stage is a twenty-two-week plant. Breeders also quote the shorter end of a range, because the other end sells fewer seed.

Sativa plants take everywhere from ten weeks to more than twenty, and the slowest line in the Haze Sativa Seeds range comes in at around 16 weeks from the flip. The catalogue can be filtered by this number, which is a reasonable first pass for a room on a tight timetable. A grower who allows four weeks on top of the figure the pack says is seldom caught out.

Terpinolene

A aromatic compound found in large amounts in many classic sativa strains and responsible for most of the thing growers mean as the “sativa” smell: green, piney, lemon and faintly floral all at once. It is volatile, driven off quickly through hot drying, and it fades more quickly in the cure than the heavier terpenes that dominate most tent lines.

To a seed buyer the word earns two jobs. When a listing lists terpinolene as the lead terpene, the strain probably has real old-sativa ancestry regardless of what the percentage claims. And where the grower are after that profile to survive by the jar, the drying has to be slow and cool; a fast dry turns a terpinolene sativa into something that tastes of very little and leaves nothing of what the pack described.

Equatorial

Describes plants out of regions where daylength hardly changes across the year, and where the plant does not develop a sharp response to changing days. These plants frequently flower slowly under a conventional twelve-hour light cycle, because twelve hours is, for them, an unremarkable day and not a signal.

The practical fix, passed down among sativa growers over decades, is to cut the light further: eleven hours, sometimes ten, particularly during the final weeks. It loses some yield yield and buys a more clearer end. A listing which says “equatorial” is warning you about this with one word, and a grower who reads it as mere origin misses the point inside it.

Sativa-dominant

The marketing category and not a botanical one. It usually means that the larger share of a hybrid’s parents are described as sativa by whoever drafted the description, and occasionally signals no more than a certain the buds are longer or the aroma brighter than the that breeder’s indica-labelled lines.

The experience people associate with a word, lively instead of heavy, is governed more by terpene chemistry and by THC content than by ancestry, and a good number of “sativa-dominant” releases produce a flat sleepy result and a good number of indica-labelled stock deliver the reverse. To a grower the percentage is worth something as a rough guide to growth habit, flowering time and stretch; as a predictor to effect it is close to useless without the aroma description.

Landrace

A population of plants adapted through centuries to one place by the local climate and climate alike, and not by deliberate breeding. Thai, Thai, Malawian and Mexican stock are the sativa examples. A landrace is a spread, rather than a single plant: within a pack the heights, finishing times and aromas spread far more than a tent-bred line, and that variation is the point of keeping one.

The trap is buying a landrace like a modern hybrid. It brings habits that make sense in an open field, such as a frame no tent can hold and a flowering rhythm tuned to an daylength the majority of growers cannot provide. “Heirloom” in a listing generally means a landrace that has been grown out away from its origin over a number of generations, typically with light selection for indoor conditions; it is nearer to usable but nonetheless not uniform. A shop listing “landrace” that does not give an origin point and a generation history is applying the word loosely, and the pack should be priced accordingly.

Hermaphroditism in long-flowering lines

The production of male flowers on a female plant, typically late in flower and often under stress. Almost every cannabis line has some tendency to do; sativa lines show it more, for a simple reason: sixteen weeks of flower is fourteen weeks of exposure for a light leak, a temperature spike or a missed watering that can trigger it off, and a old plant has gone past its natural end often throws a few desperate pollen sacs on its own as a last attempt to set seed.

Not one of these makes a sativa strain unstable by course; it means the grower’s consistency count over a longer stretch. A sealed tents, steady temperatures and cutting when the plant is ready and not two week later remove the greater part of the risk. A listing that mentions a breeder tests parents for intersex tendency is saying something worth hearing for a long-flowering line than on anything other category.

Latitude (outdoor sativas)

The one figure that determines whether a sativa will finish outdoors, and a number that no pack states. Equatorial lines require a run of shortening days to go on late enough to let the plant to finish; at high latitudes the frost arrives first, and the grower cuts a unripe plant in the end of October or loses it to mould in November. A closer to the equator, within a northern hemisphere, the longer the window runs, and Mediterranean and subtropical growers are able to finish lines that temperate growers cannot.

The practical reading of a seed listing: an “outdoor” sativa finishing month is given for the breeder’s home latitude, normally somewhere in temperate Europe or the western United States, and each degree north of it moves the date later into the frost. A grower above roughly the fiftieth parallel that is after a long-flowering sativa outdoors is shopping for an autoflower or a covered space, not a longer season.

Foxtailing

The tendency of some flowers to push out new bud clusters on top of old ones, giving spired, irregular buds instead of round ones. In the majority of tent-bred strains it is a heat symptom, typically from light too close or a room too high, and the standard response is to correct the room.

In many sativas, above all Southeast Asian and certain Haze hybrids, it is genetic and is going to occur under a perfect room. A new sativa grower often wastes a month hunting a fault that was never not there, lowering lights and temperatures and slowing an already long plant further. The breeder rarely warns which kind to expect; the parentage generally tells you.