Sativa seeds arrive with more vocabulary around them than any other category of cannabis seed, and most of it says a certain thing to a botanist, another to a breeder and a third to the grower trying to make a decision in front of the pack. The failed sativa grow nearly always goes back to a word that was read in the wrong sense: a flowering time read as a fixed number, a “sativa-dominant” tag taken as a statement of character, 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 the concrete examples, because it runs strongly towards the long-flowering end of the category and that is where the vocabulary carry the most weight most; the definitions though hold to any sativa seed from any shop. They are in no special order, because not one of them is sense without the others.
Terpinolene (the “sativa smell”)
A terpene present in large proportion in many classic sativa lines and responsible for most of the thing people describe as the “sativa” smell: green, piney, lemon and faintly floral all at once. It is volatile, lost easily through fast drying, and terpinolene degrades more quickly in storage than the earthier terpenes that dominate most tent lines.
For a seed buyer the name earns two jobs. When a listing names terpinolene as the lead aromas, the strain most likely has real old-sativa genetics whatever the percentage claims. And where the grower wants that profile to survive by the jar, the cure has to be cool and slow; a fast drying room turns a terpinolene line to a flower that tastes of hay and no trace of what the pack promised.
Sativa-dominant
The catalogue term rather than a measurable one. The phrase generally means that more of a hybrid’s parents were classed as sativa according to whoever drafted the description, and sometimes signals nothing more than that the flowers are longer or the smell sharper than the that breeder’s indica-labelled lines.
The experience people associate with the word, lively instead of sedating, is driven far more by terpene profile and the cannabinoid balance than it is by the sativa fraction, and plenty of “sativa-dominant” releases deliver a flat sleepy effect while a good number of the opposite stock do the opposite. For a grower the percentage is useful for a loose hint to growth habit, flowering time and stretch; as a predictor to how it feels it is next to worthless unless accompanied by the terpene description.
Foxtailing (and when it is not a fault)
The habit of some flowers to push out new calyx growth on top of old ones, giving spired, open buds instead of round ones. In most tent-bred strains it is a heat symptom, usually caused by light that is too close or a room that is too high, and the standard response is to correct the room.
In many sativas, above all Southeast Asian and some Haze hybrids, it is built in and is going to happen in a perfect room. A first-time sativa grower frequently wastes weeks hunting a fault that is not a problem, lowering lights and temperatures only delaying a slow plant further. The breeder rarely warns which type you should expect; the parentage usually tells you.
Latitude (outdoor sativas)
The single figure that determines whether a sativa can ripen outdoors, and a number no pack states. Long-flowering plants require a autumn days to go on long enough to let the plant finish; at northern latitudes the frost comes first, and the grower cuts a half-finished plant in late October or watches it rot in November. A closer south, within the northern hemisphere, the longer the window runs, and coastal and subtropical growers are able to ripen plants that northern growers never will.
The practical reading for a seed pack: an “outdoor” line harvest month is stated for the breeder’s own latitude, usually a point in temperate Europe or the west coast of the United States, and every step further north of it moves the finish back into the weather. A grower north of about the fiftieth parallel that wants a true sativa outdoors needs to be looking for an autoflower or else a greenhouse, not a longer season.
Landrace versus heirloom
A population of plants adapted over generations to one region by local climate and growers together, rather than by modern breeding. Colombian, Thai, Congolese and Oaxacan lines are the sativa cases. A landrace is a spread, not a single plant: inside a pack the flowering times, flowering times and aromas spread widely than a tent-bred hybrid, and this spread is the point of growing one.
The mistake is treating a landrace as a finished product. It carries habits that made sense in an equatorial field, such as height no tent can hold and a flowering clock set to a 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 for a number of generations, typically with a degree of selection towards tent conditions; it is nearer to usable but nonetheless far from uniform. A shop offering “landrace” that does not give a collection point and a generation count is using the word as a flavour, and the seeds should be judged with that in mind.
Flowering time (and what it is counted from)
The number of weeks from the start of flowering and maturity, and the one most misread number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, not from germination, so a “fourteen-week” sativa started with an eight-week vegetative stage is a twenty-two-week plant. Breeders also give the optimistic end of the range, because the other end moves fewer seed.
Long-flowering 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 that figure, which is a sensible first step if you have a grower with a tight timetable. A grower who allows four weeks on top of whatever the pack states is rarely caught out.
Haze (the family, not the smell)
Originally a particular family of plants put together in 1970s California from Colombian, Thai and South Indian parents, and later kept and worked in the Netherlands. The Haze runs tall, fills out sparsely, flowers for twelve sixteen weeks and carries a scent of spice, citrus and a note metallic that no line exactly has.
In its second sense “Haze” is whatever hybrid which contains a share of that family, and today is a great many of the sativa-leaning market. A listing that reads “Haze” without parents may be eighty percent the old family or one small fraction of it, and the grow character tracks the fraction, not the name. The useful question is never “is it a Haze” but “how much, and through which parent”.
Equatorial
Describes lines from latitudes where daylength hardly changes across the year, and that the plant does not develop a sharp response to shortening days. These plants often start flowering reluctantly under a standard twelve-hour schedule, since twelve hours is, to them, an unremarkable day and not a signal.
The practical response, passed around between sativa growers for decades, is to shorten the light more: eleven hours, sometimes ten, especially during the final weeks. It costs a yield yield and buys a earlier clearer finish. A listing which says “equatorial” is telling you this with one word, and a grower who takes it as a note on geography misses the instruction inside it.
Intersex tendency
The appearance of pollen-bearing flowers on a female plant, usually late in flower and often under stress. Every cannabis line has a degree of capacity for do; sativa plants express it more often, for one plain one: fourteen weeks of flower is sixteen weeks of exposure for a timer leak, a temperature spike or a late watering that can set it going, and an plant plant has already gone past its intended finish often throws a few late male flowers on its own as a last effort to set seed.
None of these makes a sativa strain weak by nature; it means the room’s consistency matter over longer. A sealed room, stable temperatures and cutting when the plant is ready rather than a week after take away most of the problem. A listing that mentions the breeder screens parents for hermaphrodite tendency is worth more on a sativa than for any other category.
Stretch
The surge of vertical growth that follows the switch to flowering. Most tent-bred plants add around half their height again; sativas commonly double, and some equatorial lines go further. The stretch lasts two to four weeks and will not be halted after it has started, merely redirected by training.
In practical terms, the stretch figure is the fact to reading ahead of deciding when to flip. A sativa flipped at sixty centimetres inside a two-metre tent is at the lamp before week four of flower; one switched at thirty centimetres centimetres has room. Growers moving over from indica strains nearly always flip too late the first time, and the lesson is written on the ceiling of the tent.