Sativa seeds arrive with more vocabulary attached than any other category of cannabis seed, and most of it says a certain thing to a botanist, something else to a breeder and a third to the person standing in front of the pack. A failed sativa grow nearly always goes back to a word that was understood in the wrong one of those senses: a flowering time taken as a fixed number, a “sativa-dominant” label taken as a statement of effect, a landrace bought as if it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com to hand for reference, since it runs heavily towards the long-flowering end of the spectrum where the vocabulary matter most; the definitions themselves hold to any sativa seed from any seller. They are given in no special order, since not one of them is usable without the rest.
Foxtailing
The habit of some flowers to grow fresh bud clusters on top of existing ones, producing towered, open buds rather than round ones. In most indica-leaning strains it is a heat response, usually caused by light that is too close or temperatures that is too high, and the standard response is to fix the cause.
In many sativas, especially Southeast Asian and some Haze lines, it is genetic and will occur under a flawless room. A new sativa grower frequently spends weeks hunting a fault that was never not there, lowering lights and heat only delaying a slow plant even more. The breeder rarely says which type to expect; the lineage generally tells you.
Stretch (the doubling)
The burst of vertical growth that follows the change to flowering. Most tent-bred plants add around half again; sativas commonly double, and some landrace lines triple. The stretch lasts two to four weeks and will not be halted after it begins, only redirected by training.
In practical terms, the stretch multiplier is a number to read ahead of deciding when to flip. A sativa flipped at sixty centimetres centimetres in a two-metre tent is touching the lamp by week four of flower; one switched at thirty centimetres centimetres has room. People moving from indica stock nearly always flip too late the first time, and the lesson is written on the ceiling of the tent.
Terpinolene (the “sativa smell”)
A aromatic compound present in large amounts in many classic sativa strains and accounting for much of the thing people describe as a “sativa” aroma: fresh, woody, lemon and slightly sweet at once. It is volatile, lost quickly by fast drying, and it fades faster in the cure than the earthier terpenes which lead most tent lines.
To a seed buyer the name does two things. When a listing names terpinolene among the leading aromas, the line most likely has substantial old-sativa ancestry whatever the label claims. And where the you wants that profile to survive to the jar, the cure has to be cool and slow; a fast dry flattens a terpinolene line to something that smells of hay and leaves nothing of what the pack promised.
Equatorial
Refers to lines from latitudes where daylength hardly varies through the year, and that the plant never develop a sharp response to changing days. Such plants often flower reluctantly at a conventional twelve-hour light cycle, since twelve hours is, to them, an ordinary day and not a signal.
The working fix, handed around among sativa growers over decades, is to cut the light further: eleven hours, sometimes ten, particularly in the last weeks. It costs a little yield and gains an more decisive finish. A listing which says “equatorial” is telling you about this with one word, and a grower who takes it as mere geography has missed the instruction hidden in it.
Landrace
A population of plants adapted over generations to a particular place by the local climate and climate together, rather than by deliberate breeding. Colombian, Colombian, Congolese and Oaxacan stock are the sativa examples. A landrace is variable, rather than a single plant: within a pack the heights, finishing times and aromas range widely than any tent-bred hybrid, and that variation is the whole value of keeping one.
The trap is treating a landrace like a finished product. It brings habits that made sense in an equatorial field, including height that no tent can hold and a flowering clock tuned to a daylength most growers cannot offer. “Heirloom” on a listing generally means a landrace that has been reproduced somewhere for some generations, typically with light selection towards indoor life; it is closer to usable but nonetheless not a hybrid. A seller offering “landrace” without a origin region and a reproduction history is applying the word as a flavour, and the pack should be priced accordingly.
Sativa-dominant (the label)
A marketing term and not a botanical one. The phrase usually means that the larger share of a hybrid’s parents are classed as sativa by whoever wrote the listing, which sometimes means nothing more than that the buds are longer or the aroma brighter than the that breeder’s indica-labelled lines.
The experience people associate with a word, lively instead of sedating, is driven far more by terpene chemistry and the THC balance than by the sativa fraction, and a good number of “sativa-dominant” hybrids produce a heavy couch result and a good number of the opposite stock deliver exactly the opposite. For a grower the label is useful for a loose hint to growth habit, flowering time and stretch; for a guide to how it feels it is close to useless unless accompanied by the aroma description.
Flowering time (and what it is counted from)
The figure of weeks between the onset of flowering and harvest, and the single most misread number 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. Breeders additionally quote the optimistic end of a range, since the other end sells fewer seed.
Long-flowering lines take anywhere from ten weeks to well over twenty, and the longest line in the Haze Sativa Seeds range comes in at about 16 weeks after the flip. The catalogue can be sorted by this figure, which is the reasonable first pass for a room on a fixed timetable. A grower who allows four weeks on top of whatever the pack states is rarely caught out.
Haze
Originally a specific family of plants bred in 1970s California from Colombian, Thai and Thai parents, and later kept and refined in the Netherlands. The Haze runs tall, branches openly, takes for twelve to sixteen weeks and smells of spice, pine and a note sharp that no other line quite has.
In its looser sense “Haze” is any cross that contains some of that family, and by now is most 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 flowering character follows the share, not the name. The useful question is not “is it a Haze” but “how much, and through which parent”.
Hermaphroditism in long-flowering lines
The appearance of pollen-bearing flowers on a female plant, typically late in flower and frequently under stress. Every cannabis population has some tendency for it; sativa plants express it more often, and the reason is one plain one: sixteen weeks of flower is fourteen weeks of opportunity for a timer leak, a heat spike or a missed watering that can trigger it going, and a plant plant has waited beyond its natural finish frequently throws a few late male sacs on its own as a last attempt to make seed.
Not one of these means a sativa line weak as a matter of course; it makes the grower’s consistency matter over longer. Light-tight room, steady temperatures and cutting the moment the plant is done and not a weeks later remove the greater part of the problem. A listing which mentions the breeder screens parents for hermaphrodite tendency is saying something worth hearing for a long-flowering line than for any else.