Sativa seeds come with more jargon attached than any other kind of cannabis seed, and a good deal of it says a certain thing to a botanist, another to a breeder and something different again to the person trying to make a decision in front of the pack. A disappointing sativa grow usually traces back to a word that was understood in the wrong sense: a flowering time read as a fixed number, a “sativa-dominant” label taken as a description of effect, 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 for reference, since it leans heavily to the long-flowering end of the spectrum and that is where the words matter most; the meanings themselves hold to any sativa seed from any seller. They are given in no special order, because not one of them makes sense without the others.

Sativa-dominant (the label)

A marketing category rather than a botanical one. The phrase generally indicates that the larger share of a hybrid’s parents were described as sativa by the breeder who wrote the description, which occasionally means no more than a certain the flowers are airier or the aroma sharper than the that breeder’s indica-labelled lines.

The effect people connect with a word, clear-headed instead of sedating, is governed more by terpene chemistry and by THC balance than by ancestry, and a good number of “sativa-dominant” hybrids produce a flat couch effect and plenty of indica-labelled stock do exactly the opposite. For a buyer the percentage is worth something as a loose hint to growth habit, flowering time and stretch; for a predictor to how it feels it is next to worthless unless accompanied by the terpene description.

Intersex tendency

The production of pollen-bearing flowers on a female plant, usually towards the end in flower and often in response to stress. Almost every cannabis line has some capacity for it; long-flowering lines express it more, and the reason is one plain reason: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a late watering to set it off, and an old that has gone past its natural finish often throws a few late male sacs on its own in a final attempt to set seed.

Not one of these means a sativa strain weak by course; it means the room’s discipline matter over a longer stretch. A sealed tents, steady temperatures and harvesting the moment the plant is ready rather than two weeks after take away the greater part of the risk. A listing which mentions a breeder screens parents for intersex traits is worth more on a sativa than for any else.

Terpinolene

A aromatic compound present in high proportion in a lot of old sativa lines and responsible for much of what people mean as the “sativa” smell: green, piney, lemon and faintly sweet at once. It is fragile, lost quickly through fast drying, and terpinolene fades faster in storage than the earthier terpenes that lead most tent stock.

For a seed buyer the word earns two things. Where a listing names terpinolene as the lead terpene, the strain probably has real old-sativa ancestry regardless of what the label says. And where the you are after that smell to still be there to the jar, the cure has to be slow and cool; a warm dry flattens a terpinolene sativa into a flower that smells of hay and leaves nothing of what the pack promised.

Flowering time (and what it is counted from)

The figure of weeks between the start of flowering and maturity, and the single most frequently misread number 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 started after an eight-week vegetative stage is a five-month plant. Breeders also give the shorter end of a spread, because the other end moves fewer seed.

Sativa lines take everywhere from ten weeks to more than twenty, and the longest strain in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be filtered by this number, which is a reasonable first pass for a grower on a fixed schedule. A grower who adds four weeks on top of the figure the pack states is seldom caught out.

Stretch (the doubling)

The burst of vertical growth which follows the switch to flowering. Most tent-bred plants add around half their height again; sativas routinely double, and a few equatorial types go further. The stretch lasts three to five weeks and will not be halted once it begins, merely redirected by training.

In tent terms, the stretch multiplier is a fact to read before deciding when to flip. A sativa switched at sixty centimetres centimetres in a standard tent is at the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. People coming over from indica stock nearly always flip too late the first time, and the lesson is visible on the ceiling of the tent.

Landrace

A population of plants shaped through generations to a particular place by the local climate and climate alike, rather than by modern selection. Colombian, Thai, Congolese and Oaxacan stock are the sativa cases. A landrace is a spread, not a one plant: inside a pack the flowering times, flowering times and aromas spread far more than a tent-bred line, and this spread is the point of keeping one.

The mistake is buying a landrace as a finished product. It brings habits that made sense in an equatorial field, such as height that no tent can contain and a flowering rhythm tuned to an daylength the majority of growers never offer. “Heirloom” on a listing generally refers to a landrace that has been grown out away from its origin over some generations, often with a degree of selection for indoor life; it is closer to manageable but nonetheless far from a hybrid. A shop offering “landrace” that does not give an origin region and a reproduction history is applying the word as a flavour, and the seeds should be judged accordingly.

Equatorial (the twelve-hour problem)

Describes lines from regions in which daylength barely varies across the year, which means that the plant does not develop a sharp reaction to shortening days. Such plants frequently flower reluctantly under a conventional twelve-hour light cycle, because twelve hours is, to them, a mild unremarkable day rather than a signal.

The working fix, handed down among sativa growers over decades, is to shorten the light more: eleven hours, sometimes ten, especially during the final weeks. It loses a yield yield and gains an more decisive end. A listing which says “equatorial” is telling you about this with one word, and a grower who reads it as mere origin misses the instruction inside it.

Latitude

The single number that determines whether a sativa will ripen outdoors, and one no pack prints. Equatorial lines require the autumn days to go on late enough to let the plant to finish; at high latitudes the frost arrives first, and the grower harvests an half-finished plant in the end of October or else loses it to mould in November. A closer south, in a northern hemisphere, the later the window stretches, and Mediterranean and low-latitude gardens can finish plants that northern gardens cannot.

The usable reading of a seed pack: an “outdoor” line finishing month is given for the breeder’s home latitude, usually somewhere within temperate Europe or the west coast of the United States, and each degree north of it pushes the finish later into the weather. A grower above about the fiftieth parallel that is after a true sativa in the garden is shopping for a sativa autoflower or else a covered space, and not a longer season.

Haze

In its first sense a specific line of plants put together in coastal California from Mexican, Thai and South Indian parents, and later preserved and refined in the Netherlands. The Haze grows tall, fills out sparsely, flowers for twelve sixteen weeks and smells of spice, pine and something sharp that no other line exactly has.

In its looser sense “Haze” is any cross which carries some of that family, and by now is most of the sativa-leaning catalogue. A listing which reads “Haze” without lineage may be mostly percent the classic family or one sixteenth of it, and the flowering time follows the share, not the name. The useful question is never “is it a Haze” but “how much, and via which parent”.

Foxtailing (and when it is not a fault)

The habit of some flowers to grow fresh calyx growth on top of existing ones, producing towered, irregular buds instead of round ones. In most tent-bred lines it is a stress symptom, typically from light too close or temperatures that is too high, and the standard response is to correct the cause.

In many sativas, especially Thai and some Haze hybrids, it is genetic and is going to occur under a flawless room. A new sativa grower frequently spends weeks hunting a problem that was never a problem, dropping lights and heat and delaying an already slow flower further. The listing rarely says which type to expect; the parentage generally does.