Sativa seeds arrive with more jargon around them than any other kind of cannabis seed, and a good deal of it means one thing to a botanist, something else to a seed company and something different again to the grower trying to make a decision in front of the pack. A failed 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 description 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, because it leans strongly towards the long-flowering end of the category and that is where the vocabulary carry the most weight most; the meanings though hold to any sativa seed from any seller. They are in no special order, because not one of them makes sense without the rest.
Equatorial
Refers to plants from latitudes in which daylength hardly changes through the year, which means that the plant never develop a strong response to changing days. Such plants often flower slowly under a standard twelve-hour schedule, because twelve hours is, for them, an unremarkable day rather than a signal.
The practical response, passed down between sativa growers for decades, is to shorten the light further: eleven hours, sometimes ten, especially in the final weeks. It loses some little yield and gains an more clearer finish. A listing that uses “equatorial” is telling you this in one word, and a grower that takes it as a note on geography has missed the point hidden in it.
Haze (the family, not the smell)
In its first sense a specific line of plants bred in coastal California from Mexican, Colombian and South Indian parents, and later kept and worked in the Netherlands. A true Haze grows tall, branches openly, takes for twelve to to sixteen weeks and smells of spice, citrus and something metallic that no other line exactly has.
In its looser sense “Haze” is whatever cross which carries some of that family, which today is most of the sativa-leaning market. A listing that reads “Haze” and gives no lineage could be eighty percent the classic family or a sixteenth of it, and the grow time follows the fraction, not the name. The useful question is never “is it a Haze” but “how much, and through which parent”.
Landrace
A population of plants adapted over centuries to one place by local climate and climate together, and not by deliberate breeding. Thai, Colombian, Congolese and Oaxacan lines are the classic sativa cases. A landrace is variable, rather than a single plant: inside a pack the heights, finishing times and aromas range widely than in a tent-bred hybrid, and this spread is the whole value of keeping one.
The mistake is treating a landrace as a modern product. It carries habits that made sense in an equatorial field, including a frame that no tent can hold and a flowering clock set to an equatorial daylength most growers never provide. “Heirloom” on a listing usually refers to a landrace that has been grown out away from its origin over a number of generations, typically with light selection towards tent life; it is nearer to usable but nonetheless far from uniform. A shop listing “landrace” without an collection region and a reproduction count is using the word as a flavour, and the seeds should be priced with that in mind.
Sativa-dominant (the label)
A catalogue term and not a measurable one. The phrase usually indicates that more of a hybrid’s lineage are classed as sativa according to whoever wrote the description, and occasionally means no more than a certain the buds are longer or the smell brighter than the that breeder’s other releases.
The effect people associate with a word, lively instead of heavy, is governed more by terpene chemistry and by THC content than by ancestry, and a good number of “sativa-dominant” hybrids produce a heavy sleepy result while a good number of the opposite lines do exactly the reverse. For a buyer the label is worth something as a rough guide to growth habit, flowering time and stretch; as a guide to how it feels it is close to worthless without the aroma notes.
Flowering time
The figure of weeks between the start of flowering and maturity, and the one most misread figure on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, rather than from sowing, so a “fourteen-week” sativa grown after an eight-week vegetative period is a five-month plant. Breeders also give the shorter end of the range, since the other end sells fewer seed.
Long-flowering plants run anywhere from ten weeks to well over twenty, and the longest strain in the Haze Sativa Seeds range comes in at around 16 weeks from the switch. The catalogue can be filtered by this figure, which is a reasonable first step for a grower with a tight timetable. A grower who allows four weeks to the figure the pack says is rarely disappointed.
Intersex tendency
The appearance of pollen-bearing flowers on a female plant, usually towards the end in flower and often under stress. Every cannabis population has some capacity for do; long-flowering lines express it more, and the reason is one plain one: fourteen weeks of flower is fourteen weeks of opportunity for a timer leak, a temperature spike or a late watering to set it off, and an old that has already gone past its intended finish frequently produces a few late male flowers on its own as a final effort to make seed.
Not one of this makes a sativa line unstable as a matter of nature; it means the room’s discipline count over longer. A sealed room, stable conditions and harvesting when the plant is done rather than a week after remove most of the problem. A listing which mentions a breeder screens parents for hermaphrodite tendency is worth worth hearing for a long-flowering line than for any else.
Latitude
The single figure that decides whether a sativa will ripen outdoors, and one no pack states. Long-flowering plants need the run of shortening days to continue long enough for the plant ripen; in northern latitudes the frost comes before that, and the grower harvests an half-finished plant in the end of October or else watches it to mould in November. A further south, in the northern hemisphere, the longer the window runs, and Mediterranean and subtropical growers are able to ripen lines that temperate growers cannot.
The usable rule for a seed pack: an “outdoor” sativa harvest date is given for the breeder’s home latitude, usually a point within southern Europe or the west coast of the United States, and each step north of that pushes the finish later towards the frost. A grower north of about the fiftieth parallel who is after a long-flowering sativa outdoors needs to be looking for an autoflower or else a greenhouse, not a longer summer.
Foxtailing (and when it is not a fault)
The tendency of some flowers to grow fresh calyx clusters on top of old ones, giving spired, open buds instead of round ones. In the majority of indica-leaning lines it is a heat response, usually caused by light too close or a room too high, and the advice is to correct the cause.
In many sativas, above all Southeast Asian and certain Haze hybrids, it is built in and will happen in a perfect room. A first-time sativa grower often wastes weeks chasing a fault that is not a problem, lowering lights and heat only slowing an already slow flower even more. The breeder rarely warns which kind to expect; the lineage usually tells you.
Stretch (the doubling)
The surge of upward growth that follows the change to flowering. Indica-leaning plants gain around half their height again; sativas routinely double, and a few landrace types triple. The stretch continues two to five weeks and will not be halted after it has started, merely bent sideways by training.
In tent terms, a stretch multiplier is a number to reading ahead of choosing when to flip. A sativa switched at sixty centimetres inside a two-metre tent is at the lamp by week four of flower; one flipped at thirty centimetres centimetres has room. People moving over from indica strains nearly always switch far too late the first time, and the consequence is visible on the ceiling of the tent.
Terpinolene
A terpene found in large amounts in a lot of old sativa lines and responsible for much of the thing people mean as a “sativa” smell: green, piney, citrus and slightly sweet at once. It is fragile, driven off quickly through fast drying, and it degrades faster in the cure than the heavier terpenes that dominate indica-leaning lines.
For a seed buyer the name does two jobs. Where a listing names terpinolene among the lead aromas, the line most likely has substantial old-sativa genetics whatever the percentage says. And where the you wants that profile to still be there by the jar, the drying has to be cool and slow; a fast dry flattens a terpinolene sativa into a flower that smells of very little and leaves no trace of what the pack described.
