Sativa seeds arrive with more vocabulary attached than any other kind of cannabis seed, and most of it means a certain thing to a botanist, another to a seed company and a third to the person standing in front of the pack. A disappointing sativa grow nearly always goes back to a word that was read in the wrong one of those senses: a flowering time taken as a fixed number, a “sativa-dominant” label taken as a description of effect, a landrace bought as if it were a tent-bred hybrid. The entries below are written with the range at https://hazesativaseeds.com open as reference, because it leans strongly towards the long-flowering end of the spectrum where the words carry the most weight most; the meanings themselves hold to any sativa seed from any seller. They are in no special order, because none of them makes sense without the others.
Foxtailing (and when it is not a fault)
The habit of certain flowers to grow new bud clusters on top of existing ones, producing towered, open buds rather than round ones. In the majority of tent-bred lines it is a stress response, usually from light that is too close or a room that is too high, and the advice is to correct the cause.
In a good number of sativas, above all Southeast Asian and certain Haze lines, it is genetic and will happen in a perfect room. A first-time sativa grower frequently spends weeks chasing a fault that was never not there, lowering lights and temperatures and slowing a long plant even more. The breeder seldom says which kind you should expect; the lineage usually does.
Sativa-dominant (the label)
A marketing term rather than a botanical one. It usually means that the larger share of a hybrid’s lineage were described as sativa by the breeder who drafted the description, and occasionally signals no more than that the buds are airier or the aroma sharper than the same breeder’s other lines.
The experience people connect with a word, lively rather than heavy, is driven far more by terpene chemistry and by cannabinoid balance than it is by ancestry, and a good number of “sativa-dominant” hybrids produce a flat sleepy result and plenty of the opposite lines deliver the opposite. For a buyer the percentage is useful for a rough guide to growth habit, flowering time and stretch; for a guide to how it feels it is next to useless without the aroma notes.
Terpinolene (the “sativa smell”)
A aromatic compound present in large proportion in a lot of classic sativa lines and accounting for much of the thing growers mean as a “sativa” aroma: green, woody, citrus and slightly floral at once. It is volatile, lost quickly through fast drying, and it degrades more quickly in storage than the heavier terpenes which lead indica-leaning stock.
To a seed buyer the word earns two things. Where a listing names terpinolene as the lead terpene, the strain probably carries substantial old-sativa genetics regardless of what the percentage claims. And where the grower wants that smell to still be there by the jar, the drying has to be cool and cool; a fast dry turns a terpinolene sativa to a flower that smells of hay and nothing of what the pack described.
Equatorial (the twelve-hour problem)
Describes plants from latitudes where daylength hardly varies across the year, and that the plant does not develop a sharp reaction to shortening days. These plants often flower reluctantly under a conventional twelve-hour light cycle, since twelve hours is, to them, an ordinary day and not a signal.
The working response, handed around between sativa growers over decades, is to shorten the light more: eleven hours, occasionally ten, particularly during the final weeks. It loses some yield yield and gains a earlier clearer finish. A listing that uses “equatorial” is telling you this in one word, and a grower that reads it as a note on geography has missed the instruction hidden in it.
Stretch (the doubling)
The surge of upward growth which comes after the switch to flowering. Most tent-bred plants gain half their height again; sativas routinely double, and a few landrace lines go further. The stretch continues two to five weeks and cannot be stopped once it begins, only bent sideways by training.
In practical terms, the stretch multiplier is the number to reading ahead of deciding when to flip. A sativa flipped at sixty centimetres centimetres in a two-metre tent is at the lamp by week four of flower; one flipped at thirty centimetres centimetres has room. People coming over from indica stock nearly always switch far too late the first time, and the consequence is visible on the ceiling of the tent.
Flowering time (and what it is counted from)
The figure of weeks between the onset of flowering and maturity, which is the single most frequently misunderstood figure on a sativa pack. With photoperiod seed it is counted from the day the light drops to twelve hours, rather than from sowing, so a “fourteen-week” sativa started with a eight-week vegetative period is a twenty-two-week plant. Breeders also quote the optimistic end of the spread, since the longer end moves fewer seed.
Sativa 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 after the flip. The catalogue can be sorted by that number, which is the reasonable first pass if you have a grower with a fixed timetable. A grower who adds four weeks on top of the figure the pack says is seldom caught out.
Haze (the family, not the smell)
Originally a particular family of plants bred in coastal California from Colombian, Colombian and Thai landraces, and later kept and worked in the Netherlands. The Haze grows tall, fills out sparsely, flowers for twelve to sixteen weeks and carries a scent of incense, pine and something metallic that no other other line exactly has.
In its second sense “Haze” is any cross that contains some of that family, and today is a great many of the sativa-leaning market. A listing that says “Haze” without lineage may be mostly percent the old family or a sixteenth of it, and the flowering character tracks the fraction, 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, usually towards the end in flower and frequently under stress. Almost every cannabis population carries some tendency for do; sativa plants express it more often, for a plain one: sixteen weeks of flower is fourteen weeks of exposure for a timer leak, a heat spike or a missed watering that can trigger it off, and an plant that has already gone past its natural end often produces a few late male sacs on its own as a final attempt to set seed.
Not one of this means a sativa line weak by nature; it makes the room’s consistency count over longer. Light-tight tents, stable conditions and cutting the moment the plant is done and not two week after remove most of the problem. A listing which states the breeder tests parents for hermaphrodite traits is saying something more for a sativa than for any other category.
Latitude (outdoor sativas)
The one number that determines whether a sativa will ripen outdoors, and one no pack states. Long-flowering plants need a autumn days to continue late enough to let the plant to finish; in high latitudes the frost comes first, and the grower cuts a unripe plant in the end of October or loses it rot in November. The closer to the equator, within the northern hemisphere, the longer the window stretches, and Mediterranean or low-latitude gardens are able to finish lines that temperate gardens never will.
The usable rule for a seed listing: an “outdoor” sativa finishing month is stated for the breeder’s own latitude, normally a point within southern Europe or the west coast of the United States, and every degree north of it pushes the date later into the weather. A grower above about the fiftieth parallel that wants a true sativa in the garden is looking for an autoflower or a covered space, not a longer summer.
Landrace
A population of plants shaped over centuries to one region by local growers and growers alike, rather than by modern breeding. Thai, Colombian, Malawian and Oaxacan stock are the sativa cases. A landrace is variable, rather than a single plant: inside a pack the flowering times, flowering times and aromas spread far more than a tent-bred hybrid, and this spread is the whole value of keeping one.
The mistake is treating a landrace like a finished hybrid. It carries traits that made sense in an equatorial field, such as a frame no tent can hold and a flowering clock set to a equatorial daylength the majority of growers never provide. “Heirloom” in a listing generally refers to a landrace that has been grown out somewhere over some generations, typically with light selection for indoor conditions; it is nearer to manageable but nonetheless far from a hybrid. A shop listing “landrace” that does not give an origin point and a generation history is using the word loosely, and the seeds should be judged accordingly.
