Sativa seeds arrive with more vocabulary around them than any other category of cannabis seed, and a good deal of it means one thing to a botanist, another to a seed company and a third to the person standing in front of the listing. A failed sativa grow usually traces back to a word that was understood in the wrong sense: a flowering time taken as a fixed number, a “sativa-dominant” label read 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 open as reference, because it leans strongly towards 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 shop. They are in no special order, because none of them is usable without the others.
Haze (the family, not the smell)
Originally a particular 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, takes for twelve to sixteen weeks and carries a scent of spice, citrus and a note metallic that no other line exactly reproduces.
In its looser sense “Haze” is any hybrid which contains a share of that family, which by now is a great many of the sativa-leaning market. A listing that reads “Haze” and gives no lineage could be mostly percent the old family or one sixteenth of it, and the grow character tracks the share, not the name. The useful question is not “is it a Haze” but “how much, and through which parent”.
Foxtailing
The tendency of some flowers to push out new bud clusters on top of existing ones, producing spired, open buds instead of dense ones. In the majority of tent-bred strains it is a heat symptom, usually from light too close or a room that is 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 under a perfect room. A new sativa grower frequently spends weeks hunting a fault that was never not there, lowering lights and heat and delaying a long flower further. The listing seldom says which type to expect; the parentage generally does.
Terpinolene (the “sativa smell”)
A terpene present in large proportion in a lot of old sativa strains and accounting for most of the thing growers describe as the “sativa” smell: fresh, piney, lemon and faintly floral at once. It is volatile, driven off easily by fast drying, and it fades more quickly in storage than the earthier terpenes that dominate indica-leaning lines.
To a seed buyer the word does two things. Where a listing lists terpinolene among the leading terpene, the strain most likely has real old-sativa genetics regardless of what the percentage claims. And when the grower are after that profile to still be there by the jar, the cure has to be slow and cool; a warm dry flattens a terpinolene line into something that tastes of very little and leaves nothing of what the pack described.
Intersex tendency
The appearance of male flowers on a female plant, usually late in flower and frequently in response to stress. Every cannabis line carries some tendency for do; long-flowering plants show it more often, for a plain one: fourteen weeks of flower is sixteen weeks of exposure for a light leak, a heat spike or a late watering to trigger it off, and an plant plant has already waited past its natural finish frequently produces a few late male sacs on its own in a final effort to set seed.
Not one of these means a sativa line weak as a matter of nature; it means the room’s consistency count over a longer stretch. Light-tight tents, stable temperatures and harvesting when the plant is ready rather than a weeks later remove most of the risk. A listing that mentions the breeder tests parents for intersex traits is saying something worth hearing on a long-flowering line than on anything other category.
Equatorial
Refers to plants out of regions where daylength hardly changes across the year, and where the plant does not develop a sharp response to shortening days. Such lines often flower slowly at a conventional twelve-hour schedule, because twelve hours is, for them, an ordinary day and not a signal.
The practical response, handed around among sativa growers for decades, is to shorten the light further: eleven hours, sometimes ten, particularly during the last weeks. It costs some little yield and gains a more clearer finish. A listing that uses “equatorial” is telling you about this with one word, and a grower that takes it as mere geography misses the instruction hidden in it.
Flowering time
The number of weeks from the onset of flowering and harvest, which is the one most misunderstood number on a sativa pack. With photoperiod seed it is counted from the day the light is cut to twelve hours, not from sowing, so a “fourteen-week” sativa started after a eight-week vegetative stage is a twenty-two-week plant. Seed companies also give the shorter end of the spread, because the longer end sells fewer seed.
Sativa plants take everywhere from ten weeks to well over twenty, and the longest strain in the Haze Sativa Seeds range is at about 16 weeks after the switch. The catalogue can be sorted by that figure, which is the sensible first step for a grower on a fixed schedule. A grower who adds four weeks on top of whatever the pack says is rarely disappointed.
Stretch
The surge of upward growth that comes after the switch to flowering. Most tent-bred plants add half their height again; sativas routinely double, and some equatorial types go further. The stretch continues two to four weeks and cannot be stopped after it begins, merely redirected by training.
In tent terms, a stretch multiplier is a fact worth reading before deciding when to switch. A sativa flipped at sixty centimetres in a standard tent is touching the lamp by week four of flower; one flipped at thirty centimetres centimetres has room. People coming over from indica strains nearly always switch too late the first time, and the lesson is visible on the ceiling of the tent.
Landrace versus heirloom
A population of plants adapted over centuries to one region by the local growers and climate together, rather than by deliberate breeding. Colombian, Thai, Congolese and Oaxacan lines are the sativa examples. A landrace is variable, not a single plant: inside a pack the flowering times, finishing times and aromas range far more than in any tent-bred hybrid, and that spread is the whole value of growing one.
The mistake is buying a landrace as a modern product. It carries traits that made sense in an equatorial field, such as a frame no tent can hold and a flowering clock tuned to an equatorial daylength most growers never provide. “Heirloom” on a listing usually refers to a landrace that has been reproduced away from its origin for a number of generations, typically with a degree of selection towards indoor life; it is nearer to manageable but still far from a hybrid. A shop listing “landrace” that does not give an origin point and a generation count is using the word as a flavour, and the seeds should be priced accordingly.
Sativa-dominant (the label)
A marketing category and not a measurable one. The phrase generally indicates that the larger share of a hybrid’s lineage were described as sativa by whoever wrote the listing, which sometimes signals nothing more than a certain the flowers are longer or the aroma brighter than the same breeder’s indica-labelled lines.
The effect people associate with the word, lively rather than sedating, is governed more by terpene profile and the cannabinoid content than by the sativa fraction, and a good number of “sativa-dominant” hybrids produce a heavy couch effect and plenty of indica-labelled stock do the opposite. For a buyer the percentage is useful for a rough hint to growth habit, flowering time and stretch; for a guide to how it feels it is close to useless without the terpene description.
Latitude
The single number that decides if a sativa will finish outdoors, and a number that no pack prints. Long-flowering plants need the autumn days to continue long enough to let the plant to finish; in high latitudes the frost arrives before that, and the grower harvests a unripe plant in the end of October or else watches it to mould in November. The further south, within the northern hemisphere, the longer the season stretches, and coastal and low-latitude gardens are able to ripen plants that temperate growers never will.
The usable rule for a seed listing: an “outdoor” line harvest date is given for the breeder’s own latitude, normally a point in temperate Europe or the west coast of the United States, and each degree north of it pushes the date later towards the weather. A grower north of roughly the fiftieth parallel that is after a long-flowering sativa in the garden needs to be looking for a sativa autoflower or a covered space, and not a better season.