Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and a good deal of it means one thing to a botanist, another to a breeder and a third to the grower trying to make a decision in front of the listing. A failed sativa grow nearly always goes back to a word that was understood in the wrong sense: a flowering time taken as a promise, a "sativa-dominant" label taken as a description of character, a landrace bought like it were a modern hybrid. The entries below were put together with the range at https://hazesativaseeds.com open for the concrete examples, since it leans heavily to the classic end of the category and that is where the vocabulary matter most; the meanings themselves apply to any sativa seed from any seller. They are given in no particular order, since not one of them makes sense on its own without the rest.

Sativa-dominant

The catalogue term rather than a measurable one. The phrase generally means that the larger share of a hybrid's parents were described as sativa according to the breeder who wrote the description, and occasionally means nothing more than that the flowers are airier or the aroma brighter than the that breeder's other lines.

The effect people connect with a word, clear-headed rather than heavy, is governed more by terpene profile and by THC content than it is by ancestry, and plenty of "sativa-dominant" hybrids produce a heavy couch effect while a good number of indica-labelled lines do the reverse. For a buyer the label is useful as a rough hint to growth habit, flowering time and stretch; as a guide to effect it is next to worthless unless accompanied by the terpene notes.

Flowering time (and what it is counted from)

The figure of weeks between the start of flowering and harvest, and the single most misunderstood number on a sativa pack. With photoperiod seed it is counted from the day the light drops to twelve hours, not from sowing, so a "fourteen-week" sativa grown with an ordinary vegetative stage is a twenty-two-week plant. Seed companies additionally quote the shorter end of a spread, because the longer end sells fewer seed.

Long-flowering plants run anywhere from ten weeks to more than twenty, and the longest strain in the Haze Sativa Seeds range comes in at around 16 weeks after the switch. The catalogue can be filtered by this number, which is the sensible first step if you have a room with a fixed timetable. A grower who allows four weeks to the figure the pack states is rarely caught out.

Equatorial

Refers to lines out of regions in which daylength barely changes through the year, and where the plant never develop a sharp reaction to shortening days. These plants frequently start flowering reluctantly at a standard twelve-hour light cycle, because twelve hours is, to them, a mild unremarkable day and not a signal.

The working fix, handed around between sativa growers over decades, is to shorten the light further: eleven hours, sometimes ten, particularly in the final weeks. It loses a yield yield and buys a more clearer finish. A listing which says "equatorial" is warning you this with one word, and a grower who takes it as mere geography has missed the point hidden in it.

Terpinolene (the "sativa smell")

A terpene present in high proportion in many classic sativa strains and responsible for much of what growers describe as the "sativa" smell: fresh, piney, lemon and faintly sweet all at once. It is fragile, lost quickly by hot drying, and terpinolene fades more quickly in the cure than the earthier terpenes that lead indica-leaning stock.

To a seed buyer the name does two jobs. When a listing names terpinolene as the lead aromas, the line probably carries real Haze-era genetics regardless of what the percentage says. And when the grower wants that smell to survive by the jar, the cure is going to be slow and cool; a warm drying room flattens a terpinolene sativa into a flower that smells of hay and no trace of what the pack promised.

Haze

Originally a particular family of plants bred in coastal California from Mexican, Colombian and Thai parents, and then kept and refined in the Netherlands. A true Haze runs tall, fills out sparsely, takes for twelve sixteen weeks and carries a scent of incense, citrus and a note metallic that no line quite reproduces.

In its looser sense "Haze" is any hybrid which carries some of that family, and today is most of the sativa-leaning market. A listing that says "Haze" and gives no lineage could be eighty percent original old family or one small fraction of it, and the flowering time tracks the fraction, not the name. The useful question is not "is it a Haze" but "how much, and through which parent".

Foxtailing (and when it is not a fault)

The habit of certain flowers to push out new bud clusters on top of old ones, giving towered, open buds instead of dense ones. In the majority of indica-leaning lines it is a heat response, typically from light that is too close or a room too high, and the standard response is to correct the room.

In many sativas, above all Thai and some Haze hybrids, it is built in and is going to happen under a perfect room. A first-time sativa grower frequently wastes a month hunting a fault that is a problem, lowering lights and heat and delaying an already slow flower even more. The listing rarely warns which type you should expect; the parentage usually does.

Landrace versus heirloom

A population of plants adapted through centuries to a particular region by local climate and growers alike, rather than by deliberate breeding. Thai, Colombian, Malawian and Mexican stock are the classic sativa cases. A landrace is a spread, not a one plant: within a pack the flowering times, finishing times and smells spread widely than in a tent-bred line, and that spread is the point of growing one.

The mistake is treating a landrace as a finished product. It brings traits that made sense in an open field, such as height that no tent can hold and a flowering rhythm tuned to an equatorial daylength the majority of growers never provide. "Heirloom" in a listing generally refers to a landrace that has been reproduced somewhere over some generations, typically with light selection towards tent conditions; it is closer to usable but nonetheless far from uniform. A shop listing "landrace" that does not give an origin region and a generation count is applying the word as a flavour, and the pack should be priced accordingly.

Hermaphroditism in long-flowering lines

The production of pollen-bearing flowers on a female plant, typically late in flower and frequently under stress. Almost every cannabis population has some tendency to do; long-flowering plants show it more often, for a simple reason: fourteen weeks of flower is sixteen weeks of opportunity for a timer leak, a heat spike or a late watering that can set it going, and a plant that has already gone beyond its intended finish often throws a few late male flowers on its own as a final effort to make seed.

Not one of this makes a sativa line unstable by nature; it makes the grower's consistency count for a longer stretch. A sealed room, steady conditions and harvesting the moment the plant is done rather than a week after take away most of the risk. A listing that states a breeder tests parents for hermaphrodite tendency is saying something worth hearing on a long-flowering line than for any other category.

Stretch (the doubling)

The burst of vertical growth which comes after the switch to flowering. Indica-leaning plants add half again; sativas routinely double, and a few landrace types go further. The stretch continues three to five weeks and will not be halted after it has started, merely redirected by training.

In tent terms, a stretch figure is the number worth reading ahead of deciding when to switch. A sativa switched at sixty centimetres centimetres inside a standard tent is touching the lamp before week four of flower; one flipped at thirty centimetres has room. Growers coming from indica stock almost always flip too late the first time, and the lesson is written on the ceiling of the tent.