Sativa seeds come with more vocabulary attached than any other kind of cannabis seed, and most of it says a certain thing to a botanist, something else to a seed company 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 one of those senses: a flowering time read as a fixed number, a “sativa-dominant” tag read as a statement of character, a landrace bought like it were a tent-bred 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 long-flowering end of the category and that is where the vocabulary matter most; the meanings themselves apply to any sativa seed from any shop. They are in no special order, since not one of them makes sense without the others.
Equatorial
Describes lines out of regions where daylength hardly changes through the year, and where the plant never evolved a sharp response to shortening days. These lines often start flowering slowly at a conventional twelve-hour schedule, since twelve hours is, for them, an ordinary day rather than a signal.
The working fix, handed down among sativa growers over decades, is to cut the light more: eleven hours, occasionally ten, especially in the last weeks. It costs some little yield and gains an more clearer finish. A listing that uses “equatorial” is warning you about this in one word, and a grower that takes it as a note on geography has missed the point inside it.
Flowering time
The number of weeks between the onset of flowering and harvest, which is the one most frequently misunderstood figure on a sativa pack. With photoperiod seed it is counted from the day the light drops to twelve hours, not from germination, so a “fourteen-week” sativa started after an eight-week vegetative stage is a five-month plant. Seed companies also give the shorter end of a spread, because the longer end sells fewer seed.
Sativa plants run everywhere from ten weeks to more than twenty, and the slowest strain in the Haze Sativa Seeds range is at around 16 weeks after the flip. The catalogue can be filtered by this figure, which is the sensible first pass for a grower on a fixed schedule. A grower who allows four weeks to the figure the pack states is rarely caught out.
Intersex tendency
The production of male flowers on a female plant, usually late in flower and often under stress. Almost every cannabis line has some capacity for do; long-flowering lines show it more, and the reason is a plain one: sixteen weeks of flower is sixteen weeks of exposure for a timer leak, a temperature spike or a missed watering that can set it going, and a plant plant has already waited beyond its natural end often throws a few desperate male sacs on its own in a last attempt to make seed.
Not one of these makes a sativa line weak as a matter of course; it makes the grower’s consistency matter for longer. A sealed tents, steady temperatures and cutting when the plant is ready and not two week after remove the greater part of the problem. A listing which states a breeder screens parents for intersex traits is saying something more for a sativa than for anything other category.
Haze (the family, not the smell)
Originally a particular line of plants bred in coastal California from Colombian, Thai and Thai parents, and later kept and worked in the Netherlands. The Haze runs tall, branches sparsely, flowers for twelve to sixteen weeks and carries a scent of spice, pine and something sharp that no other line exactly reproduces.
In its looser sense “Haze” is any hybrid that contains some of that family, which by now is most of the sativa-leaning catalogue. A listing which reads “Haze” without parents may be eighty percent the classic family or a sixteenth of it, and the grow time tracks the share, not the name. The useful question is not “is it a Haze” but “how much, and via which parent”.
Stretch (the doubling)
The surge of vertical growth which comes after the change to flowering. Indica-leaning plants add around half again; sativas commonly double, and some equatorial lines triple. The stretch lasts three to four weeks and cannot be stopped after it begins, only redirected by training.
In tent terms, the stretch figure is a number to reading before deciding when to flip. A sativa switched at sixty centimetres inside a standard tent is touching the lamp before week four of flower; one flipped at thirty centimetres has room. Growers moving over from indica stock nearly always switch too late the first time, and the consequence is visible on the ceiling of the tent.
Foxtailing (and when it is not a fault)
The tendency of certain flowers to grow fresh bud clusters on top of old ones, producing spired, open buds rather than round ones. In most indica-leaning strains it is a stress symptom, typically caused by light that is too close or a room too high, and the standard response is to correct the cause.
In a good number of sativas, above all Thai and certain Haze hybrids, it is genetic and will happen in a flawless room. A first-time sativa grower frequently spends a month hunting a problem that was never not there, dropping lights and heat and slowing an already long plant further. The listing rarely warns which type to expect; the lineage generally tells you.
Terpinolene (the “sativa smell”)
A terpene present in high amounts in a lot of old sativa strains and responsible for much of what people describe as the “sativa” smell: fresh, piney, lemon and slightly floral all at once. It is fragile, lost easily by hot drying, and terpinolene fades more quickly during the cure than the earthier terpenes which dominate indica-leaning lines.
For a seed buyer the name does two jobs. Where a listing names terpinolene as the leading aromas, the line most likely has real Haze-era genetics regardless of what the percentage claims. And where the you are after that profile to still be there to the jar, the cure is going to be slow and slow; a fast drying room turns a terpinolene line into a flower that smells of hay and nothing of what the pack described.
Sativa-dominant (the label)
A catalogue category and not a measurable one. The phrase generally indicates that more of a hybrid’s lineage are described as sativa according to whoever wrote the listing, which occasionally means nothing more than that the buds are longer or the aroma brighter than the same breeder’s indica-labelled lines.
The experience people connect with a word, lively instead of heavy, is driven far more by terpene profile and the THC content than it is by ancestry, and a good number of “sativa-dominant” hybrids produce a heavy couch result and a good number of the opposite stock do exactly the opposite. To a grower the label is worth something for a rough hint to growth habit, flowering time and stretch; for a guide to effect it is close to worthless without the aroma notes.
Landrace
A population of plants adapted over generations to a particular region by local growers and growers together, rather than by modern breeding. Thai, Thai, Congolese and Mexican lines are the sativa cases. A landrace is a spread, rather than a one plant: inside a pack the flowering times, flowering times and aromas spread widely than a tent-bred line, and that variation is the whole value of keeping one.
The trap is buying a landrace like a modern product. It brings habits that made sense in an open field, such as height no tent can contain and a flowering clock set to an equatorial daylength most growers never provide. “Heirloom” in a listing usually means a landrace that has been reproduced somewhere for a number of generations, typically with a degree of selection for indoor life; it is nearer to usable but nonetheless far from uniform. A seller listing “landrace” that does not give an origin region and a generation history is applying the word as a flavour, and the seeds should be judged accordingly.
Latitude
The one figure that decides whether a sativa will finish outdoors, and one that no pack states. Long-flowering lines need the autumn days to go on long enough for the plant to finish; at high latitudes the frost comes before that, and the grower cuts a unripe plant in late October or watches it rot in November. A further south, in the northern hemisphere, the longer the window stretches, and coastal and subtropical growers can ripen lines that temperate growers cannot.
The practical reading for a seed listing: an “outdoor” sativa finishing month is given for the breeder’s home latitude, usually a point within southern Europe or the west coast of the United States, and every degree further north of it pushes the finish later towards the frost. A grower above roughly the fiftieth parallel who wants a true sativa in the garden needs to be shopping for an autoflower or else a greenhouse, and not a longer season.
