Sativa seeds arrive with more jargon attached than any other kind of cannabis seed, and most of it says one thing to a botanist, another to a seed company and something different again to the grower trying to make a decision in front of the listing. A disappointing sativa grow nearly always traces back to a word that was read in the wrong one of those senses: a flowering time taken as a promise, a «sativa-dominant» label taken 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 to hand for reference, because it runs strongly to the long-flowering end of the category and that is where the vocabulary matter most; the definitions themselves apply to any sativa seed from any shop. They are given in no special order, because not one of them makes usable on its own without the rest.
Foxtailing
The habit of certain flowers to grow fresh calyx growth on top of old ones, giving towered, open buds rather than dense ones. In the majority of indica-leaning lines it is a stress symptom, typically caused by light too close or temperatures that is too high, and the standard response is to correct the cause.
In many sativas, especially Thai and some Haze hybrids, it is built in and will happen in a flawless room. A first-time sativa grower often spends weeks chasing a problem that was never there, lowering lights and temperatures and slowing an already slow flower even more. The listing rarely warns which kind to expect; the lineage generally does.
Haze
In its first sense a specific family of plants put together in coastal California from Colombian, Colombian and South Indian landraces, and then kept and refined in the Netherlands. A true Haze grows tall, branches sparsely, takes for twelve sixteen weeks and carries a scent of spice, citrus and something sharp that no line quite has.
In its second sense «Haze» is any hybrid that contains some of that family, and today is most of the sativa-leaning market. A listing which says «Haze» without parents may be mostly percent original classic family or one sixteenth of it, and the grow time tracks the fraction, not the name. The useful question is never «is it a Haze» but «how much, and through which parent».
Flowering time
The figure of weeks from the onset of flowering and harvest, and the single most frequently misread figure on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, not from sowing, so a «fourteen-week» sativa grown after a ordinary vegetative stage is a five-month plant. Seed companies additionally give the optimistic end of a spread, because the other end sells fewer seed.
Sativa lines run anywhere from ten weeks to more than twenty, and the slowest strain in the Haze Sativa Seeds range comes in at around 16 weeks after the switch. The catalogue can be sorted by that number, which is a sensible first step if you have a room on a tight schedule. A grower who adds four weeks to the figure the pack says is seldom disappointed.
Hermaphroditism in long-flowering lines
The appearance of male flowers on a female plant, usually late in flower and often under stress. Every cannabis population carries some tendency for it; long-flowering plants express it more, for one plain one: fourteen weeks of flower is fourteen weeks of exposure for a light leak, a heat spike or a late watering that can trigger it going, and a old plant has already waited past its natural finish often produces a few desperate male sacs on its own as a final attempt to make seed.
Not one of this means a sativa strain weak as a matter of nature; it makes the grower’s consistency matter for a longer stretch. Light-tight tents, stable conditions and cutting the moment the plant is ready rather than two weeks after take away the greater part of the risk. A listing that mentions the breeder screens parents for hermaphrodite tendency is worth more on a long-flowering line than on any other category.
Stretch (the doubling)
The surge of upward growth which follows the change to flowering. Indica-leaning plants gain half their height again; sativas routinely double, and a few landrace lines triple. The stretch continues three to four weeks and will not be stopped once it begins, merely redirected by training.
In tent terms, a stretch multiplier is a fact worth reading ahead of choosing when to switch. A sativa switched at sixty centimetres inside a standard tent is at the lamp before week four of flower; one switched at thirty centimetres centimetres has room. Growers coming over from indica stock nearly always switch too late the first time, and the lesson is written on the ceiling of the tent.
Latitude
The one figure that determines whether a sativa can ripen outdoors, and one that no pack states. Equatorial lines require a run of shortening days to go on late enough to let the plant finish; at northern latitudes the frost comes before that, and the grower cuts an unripe plant in late October or else watches it rot in November. A further south, in a northern hemisphere, the longer the season runs, and coastal and low-latitude growers are able to ripen lines that northern gardens cannot.
The practical reading of a seed pack: an «outdoor» line finishing date is given for the breeder’s own latitude, normally somewhere in southern Europe or the western United States, and every step north of it pushes the finish later towards the frost. A grower above roughly the fiftieth parallel who is after a long-flowering sativa in the garden is shopping for an autoflower or a greenhouse, not a longer summer.
Terpinolene (the «sativa smell»)
A aromatic compound present in large proportion in a lot of classic sativa lines and accounting for much of what growers describe as a «sativa» aroma: fresh, woody, citrus and faintly sweet all at once. It is volatile, driven off easily by hot drying, and it degrades faster during the cure than the earthier terpenes that lead most tent stock.
For a seed buyer the name does two jobs. Where a listing lists terpinolene as the leading terpene, the line probably has real Haze-era ancestry whatever the label claims. And where the grower wants that smell to survive to the jar, the drying has to be cool and cool; a warm dry turns a terpinolene line into something that smells of very little and no trace of what the pack described.
Sativa-dominant (the label)
The marketing category and not a botanical one. The phrase generally means that the larger share of a hybrid’s lineage were classed as sativa by the breeder who wrote the listing, and occasionally signals no more than a certain the flowers are longer or the aroma brighter than the that breeder’s indica-labelled releases.
The experience people connect with the word, lively rather than heavy, is governed far more by terpene chemistry and by cannabinoid content than by the sativa fraction, and plenty of «sativa-dominant» hybrids produce a heavy couch effect while plenty of the opposite lines deliver the reverse. To a grower the percentage is useful as a loose hint to growth habit, flowering time and stretch; as a predictor to effect it is close to useless unless accompanied by the terpene description.
Landrace versus heirloom
A population of plants adapted over centuries to one place by local growers and growers alike, and not by modern selection. Colombian, Colombian, Malawian and Oaxacan stock are the sativa cases. A landrace is variable, rather than a single plant: within a pack the flowering times, finishing times and aromas spread far more than a tent-bred line, and this spread is the whole value of growing one.
The mistake is treating a landrace as a modern product. It carries habits that make sense in an equatorial field, such as a frame that no tent can contain and a flowering clock tuned to a equatorial daylength most growers never provide. «Heirloom» in a listing generally refers to a landrace that has been grown out away from its origin for a number of generations, often with a degree of selection towards tent life; it is nearer to manageable but nonetheless far from uniform. A seller offering «landrace» without a origin point and a generation history is applying the word as a flavour, and the seeds should be judged accordingly.
Equatorial
Describes plants from regions in which daylength barely changes across the year, and where the plant never evolved a strong reaction to shortening days. Such plants frequently flower reluctantly at a standard twelve-hour schedule, because twelve hours is, to them, a mild unremarkable day rather than a signal.
The practical fix, passed around between sativa growers for decades, is to shorten the light more: eleven hours, sometimes ten, particularly in the last weeks. It loses a yield yield and gains a earlier clearer finish. A listing which uses «equatorial» is telling you about this in one word, and a grower that takes it as a note on origin misses the point hidden in it.
