Sativa seeds come with more vocabulary around them than any other kind of cannabis seed, and a good deal of it means a certain thing to a botanist, something else to a breeder and something different again to the person standing in front of the pack. A failed sativa grow nearly always traces back to a word that was read in the wrong sense: a flowering time taken as a fixed number, a “sativa-dominant” tag read as a statement of effect, a landrace bought as if it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand for the concrete examples, because it runs strongly to the long-flowering end of the category and that is where the words matter most; the definitions though hold to any sativa seed from any seller. They are in no special order, since none of them is usable without the others.
Equatorial
Refers to plants from latitudes where daylength hardly varies through the year, and where the plant never develop a strong response to changing days. Such lines frequently start flowering slowly under a conventional twelve-hour schedule, since twelve hours is, for them, an ordinary day and not a signal.
The working fix, handed down between sativa growers for decades, is to shorten the light further: eleven hours, occasionally ten, particularly during the final weeks. It loses a yield yield and gains a more clearer end. A listing that says “equatorial” is warning you this in one word, and a grower that takes it as mere origin has missed the point hidden in it.
Flowering time
The figure of weeks from the onset of flowering and harvest, and the single most frequently misunderstood number 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 with an eight-week vegetative stage is a five-month plant. Seed companies also give the optimistic end of a spread, because the longer end sells fewer seed.
Long-flowering lines take anywhere from ten weeks to well over twenty, and the slowest line in the Haze Sativa Seeds range comes in at about 16 weeks after the switch. The catalogue can be filtered by this figure, which is a sensible first pass for a grower on a tight timetable. A grower who allows four weeks on top of the figure the pack states is seldom disappointed.
Landrace versus heirloom
A population of plants adapted through generations to one region by local climate and growers alike, rather than by deliberate breeding. Thai, Thai, Congolese and Mexican stock are the sativa cases. A landrace is variable, rather than a one plant: inside a pack the heights, flowering times and aromas spread widely than in any tent-bred hybrid, and that variation is the whole value of growing one.
The mistake is buying a landrace like a modern hybrid. It carries traits that made sense in an equatorial field, including height no tent can contain and a flowering rhythm set to an daylength the majority of growers cannot provide. “Heirloom” in a listing usually means a landrace that has been reproduced away from its origin for a number of generations, often with light selection for tent life; it is nearer to usable but still not a hybrid. A seller offering “landrace” that does not give a origin region and a reproduction history is using the word loosely, and the seeds should be priced with that in mind.
Haze (the family, not the smell)
In its first sense a particular line of plants put together in 1970s California from Mexican, Thai and South Indian parents, and later kept and refined in the Netherlands. A true Haze grows tall, fills out openly, flowers for twelve sixteen weeks and smells of incense, pine and a note metallic that no other line exactly reproduces.
In its second sense “Haze” is whatever hybrid which contains some of that family, and by now is most of the sativa-leaning market. A listing which says “Haze” without parents may be eighty percent the old family or one sixteenth of it, and the grow character tracks the share, not the name. The working question is not “is it a Haze” but “how much, and via which parent”.
Foxtailing (and when it is not a fault)
The habit of certain flowers to push out fresh bud clusters on top of existing ones, giving towered, irregular buds rather than round ones. In most tent-bred strains it is a heat response, typically caused by light that is too close or temperatures too high, and the standard response is to fix the cause.
In many sativas, especially Southeast Asian and some Haze lines, it is built in and will occur in a flawless room. A first-time sativa grower frequently spends a month hunting a fault that was never not there, dropping lights and heat and slowing a slow flower even more. The listing rarely says which type you should expect; the parentage generally tells you.
Latitude (outdoor sativas)
The single number that determines whether a sativa can finish outdoors, and one that no pack states. Long-flowering plants need the run of shortening days to continue late enough to let the plant to finish; at northern latitudes the frost arrives first, and the grower harvests a unripe plant in late October or watches it to mould in November. The further to the equator, within a northern hemisphere, the longer the window stretches, and coastal and low-latitude gardens can finish plants that northern growers cannot.
The usable rule of a seed pack: an “outdoor” sativa finishing month is given for the breeder’s home latitude, usually somewhere within southern Europe or the west coast of the United States, and each degree north of it moves the date later towards the frost. A grower above roughly the fiftieth parallel that is after a long-flowering sativa in the garden is shopping for an autoflower or else a greenhouse, and not a better season.
Intersex tendency
The production of male flowers on a female plant, typically towards the end in flower and often under stress. Every cannabis line has some capacity to it; long-flowering lines express it more, for a simple reason: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a late watering that can set it off, and an old that has already gone past its intended finish often throws a few late male sacs on its own in a last attempt to set seed.
None of these makes a sativa line unstable as a matter of nature; it means the room’s consistency count for a longer stretch. A sealed tents, stable temperatures and cutting when the plant is ready and not a week later remove most of the risk. A listing which states the breeder tests parents for hermaphrodite tendency is saying something more for a sativa than for any else.
Terpinolene
A aromatic compound found in large proportion in many old sativa lines and responsible for most of the thing growers mean as a “sativa” smell: green, piney, citrus and slightly floral at once. It is volatile, driven off quickly through hot drying, and it degrades more quickly in storage than the earthier terpenes that lead indica-leaning lines.
For a seed buyer the word does two things. When a listing names terpinolene as the lead aromas, the line most likely has real old-sativa genetics regardless of what the label says. And when the you are after that smell to still be there to the jar, the drying has to be cool and cool; a warm drying room turns a terpinolene sativa into a flower that tastes of hay and leaves no trace of what the pack described.
Stretch (the doubling)
The surge of vertical growth that follows the change to flowering. Most tent-bred plants gain around half again; sativas commonly double, and a few equatorial lines go further. The stretch lasts two to five weeks and will not be stopped once it begins, merely bent sideways by training.
In practical terms, the stretch figure is a fact worth read ahead of deciding when to flip. A sativa switched at sixty centimetres inside a two-metre tent is at the lamp before week four of flower; one flipped at thirty centimetres has room. Growers coming from indica strains almost always switch too late the first time, and the lesson is written on the ceiling of the tent.
