Sativa seeds arrive with more vocabulary attached than any other kind of cannabis seed, and a good deal of it says a certain thing to a botanist, something else to a breeder and a third to the grower standing in front of the listing. A disappointing sativa grow usually traces 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 statement of character, a landrace bought as if it were a modern hybrid. The entries below are written with the range at https://hazesativaseeds.com to hand for the concrete examples, because it leans heavily to the long-flowering end of the category where the words carry the most weight most; the definitions themselves hold to any sativa seed from any seller. They are in no particular order, since not one of them makes sense on its own without the rest.
Intersex tendency
The production of pollen-bearing flowers on a female plant, typically towards the end in flower and often in response to stress. Almost every cannabis population has a degree of tendency to do; long-flowering plants show it more, and the reason is a simple reason: sixteen weeks of flower is sixteen weeks of exposure for a light leak, a heat spike or a late watering to set it off, and an plant plant has already waited beyond its intended finish frequently produces a few late pollen sacs on its own as a final effort to set seed.
Not one of these makes a sativa strain unstable by nature; it makes the room’s discipline count for longer. Light-tight room, steady conditions and harvesting the moment the plant is ready rather than a weeks later remove the greater part of the problem. A listing which mentions the breeder tests parents for hermaphrodite traits is saying something worth hearing for a long-flowering line than for any other category.
Stretch
The surge of vertical growth that comes after the switch to flowering. Most tent-bred plants add around half again; sativas commonly double, and a few landrace types triple. The stretch continues two to four weeks and will not be stopped after it has started, only bent sideways by training.
In practical terms, a stretch multiplier is a fact to reading before choosing when to flip. A sativa switched at sixty centimetres inside a standard tent is at the lamp by week four of flower; one switched at thirty centimetres has room. Growers coming over from indica stock almost always switch too late the first time, and the consequence is written on the ceiling of the tent.
Landrace
A population of plants adapted through generations to a particular place by the local climate and climate together, rather than by modern selection. Colombian, Colombian, Congolese and Mexican stock are the classic sativa examples. A landrace is variable, not a one plant: inside a pack the heights, flowering times and aromas spread widely than in a tent-bred hybrid, and this spread is the whole value of growing one.
The trap is treating a landrace like a finished hybrid. It carries habits that make sense in an open field, including height no tent can contain and a flowering clock tuned to a equatorial daylength the majority of growers cannot provide. “Heirloom” on a listing usually refers to a landrace that has been reproduced away from its origin for some generations, often with light selection for tent conditions; it is nearer to manageable but still not a hybrid. A seller listing “landrace” without a collection point and a generation count is applying the word as a flavour, and the pack should be judged accordingly.
Sativa-dominant (the label)
The marketing term and not a botanical one. The phrase usually means that more of a hybrid’s parents are described as sativa according to the breeder who drafted the listing, which sometimes means no more than a certain the buds are longer or the aroma brighter than the same breeder’s other releases.
The effect people connect with the word, lively rather than heavy, is driven far more by terpene profile and by THC content than by ancestry, and a good number of “sativa-dominant” hybrids produce a heavy couch result and plenty of the opposite stock deliver exactly the opposite. To a grower the percentage is useful as a loose guide to growth habit, flowering time and stretch; for a guide to how it feels it is next to useless unless accompanied by the aroma description.
Haze (the family, not the smell)
In its first sense a specific family of plants bred in 1970s California from Mexican, Colombian and South Indian landraces, and then preserved and worked in the Netherlands. A true Haze runs tall, branches openly, flowers for twelve to sixteen weeks and carries a scent of spice, pine and something metallic that no other other line quite has.
In its looser sense “Haze” is any cross that carries a share of that family, which by now is a great many of the sativa-leaning market. A listing which reads “Haze” and gives no lineage could be mostly percent the classic family or a small fraction of it, and the flowering time follows the fraction, not the name. The working question is not “is it a Haze” but “how much, and via which parent”.
Foxtailing
The tendency of certain flowers to push out new calyx growth on top of existing ones, producing towered, open buds rather than dense ones. In the majority of tent-bred strains it is a stress response, usually caused by light that is too close or temperatures too high, and the advice is to correct the room.
In many sativas, above all Thai and certain Haze lines, it is genetic and is going to happen in a perfect room. A first-time sativa grower often wastes a month chasing a fault that is a problem, dropping lights and temperatures and delaying an already long plant even more. The listing rarely says which type to expect; the lineage usually does.
Equatorial (the twelve-hour problem)
Refers to plants out of regions in which daylength barely changes through the year, and where the plant never evolved a strong response to changing days. These lines frequently flower slowly at a standard twelve-hour schedule, because twelve hours is, for them, an unremarkable day and not a signal.
The practical fix, passed around among sativa growers for decades, is to shorten the light further: eleven hours, occasionally ten, particularly in the last weeks. It loses a yield yield and buys a more decisive end. A listing which says “equatorial” is warning you about this in one word, and a grower that reads it as mere origin misses the point inside it.
Latitude
The one number that determines if a sativa can ripen outdoors, and one no pack prints. Equatorial lines need the autumn days to go on long enough to let the plant to finish; at high latitudes the frost comes first, and the grower cuts an unripe plant in late October or watches it to mould in November. The closer to the equator, in the northern hemisphere, the later the window stretches, and Mediterranean and subtropical gardens are able to finish plants that temperate gardens cannot.
The practical rule of a seed pack: an “outdoor” sativa finishing month is stated for the breeder’s own latitude, normally a point within temperate Europe or the western United States, and each step further north of it pushes the finish later towards the weather. A grower above roughly the fiftieth parallel who wants a long-flowering sativa in the garden is shopping for a sativa autoflower or a covered space, and not a longer summer.
Terpinolene
A terpene present in large proportion in a lot of classic sativa lines and responsible for much of the thing people describe as a “sativa” smell: green, woody, lemon and faintly floral all at once. It is volatile, driven off quickly by hot drying, and it degrades more quickly during storage than the heavier terpenes that dominate most tent lines.
For a seed buyer the word does two things. Where a listing names terpinolene as the lead terpene, the strain probably carries substantial Haze-era ancestry regardless of what the label claims. And when the grower wants that smell to still be there to the jar, the cure is going to be slow and slow; a fast drying room flattens a terpinolene line into a flower that tastes of very little and leaves no trace of what the pack described.