Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and a good deal of it means one thing to a botanist, something else to a breeder and a third to the person standing in front of the listing. The failed sativa grow nearly always goes back to a word that was read in the wrong sense: a flowering time taken as a fixed number, a “sativa-dominant” label taken as a statement of character, a landrace chosen like it were a tent-bred hybrid. The entries below are written with the range at https://hazesativaseeds.com open as the concrete examples, since it leans strongly to the classic end of the spectrum and that is where the vocabulary carry the most weight most; the meanings themselves apply to any sativa seed from any shop. They are in no special order, because not one of them makes sense on its own without the rest.
Sativa-dominant (the label)
A marketing term rather than a botanical one. It usually indicates that the larger share of a hybrid’s lineage were classed as sativa according to the breeder who drafted the description, and sometimes means no more than a certain the flowers are longer or the smell sharper than the same breeder’s indica-labelled releases.
The experience people connect with a word, lively instead of heavy, is governed far more by terpene profile and the cannabinoid balance than by ancestry, and plenty of “sativa-dominant” releases deliver a flat sleepy result while plenty of indica-labelled stock do the opposite. To a grower the label is worth something for a loose guide to growth habit, flowering time and stretch; as a guide to effect it is close to worthless unless accompanied by the terpene notes.
Stretch (the doubling)
The burst of vertical growth which follows the change to flowering. Most tent-bred plants add around half again; sativas commonly double, and some equatorial types triple. The stretch continues two to five weeks and will not be stopped after it begins, merely bent sideways by training.
In tent terms, the stretch multiplier is the number to read before deciding when to switch. A sativa flipped at sixty centimetres centimetres inside a standard tent is touching the lamp by week four of flower; one switched at thirty centimetres has room. Growers moving from indica strains nearly always flip too late the first time, and the lesson is visible on the ceiling of the tent.
Equatorial
Describes lines out of latitudes where daylength barely changes across the year, which means where the plant does not evolved a strong reaction to changing days. These plants often flower reluctantly under a conventional twelve-hour schedule, because twelve hours is, to them, a mild unremarkable day rather than a signal.
The practical response, passed down among sativa growers for decades, is to cut the light further: eleven hours, sometimes ten, particularly during the final weeks. It costs a little yield and gains an earlier clearer end. A listing that uses “equatorial” is telling you about this with one word, and a grower that reads it as a note on geography misses the point hidden in it.
Intersex tendency
The appearance of male flowers on a female plant, typically towards the end in flower and often in response to stress. Almost every cannabis line has a degree of tendency for do; sativa plants show it more often, and the reason is one simple one: fourteen weeks of flower is fourteen weeks of exposure for a light leak, a temperature spike or a late watering that can set it going, and a old plant has gone beyond its intended end frequently throws a few late male flowers on its own in a last attempt to make seed.
None of this makes a sativa strain unstable by nature; it makes the room’s consistency matter for a longer stretch. Light-tight tents, steady temperatures and cutting when the plant is done and not a weeks after remove the greater part of the problem. A listing that mentions a breeder tests parents for intersex traits is worth more on a sativa than for any other category.
Landrace
A population of plants shaped over centuries to a particular region by the local climate and growers together, and not by deliberate breeding. Thai, Colombian, Congolese and Mexican stock are the sativa cases. A landrace is variable, rather than a single plant: within a pack the heights, finishing times and smells spread widely than any tent-bred hybrid, and this spread is the point of growing one.
The trap is buying a landrace as a finished hybrid. It carries habits that made sense in an open field, such as height that no tent can contain and a flowering rhythm set to a daylength the majority of growers cannot offer. “Heirloom” on a listing generally refers to a landrace that has been grown out away from its origin for a number of generations, typically with light selection for indoor life; it is nearer to manageable but nonetheless far from uniform. A shop listing “landrace” without an origin point and a generation count is applying the word as a flavour, and the pack should be judged accordingly.
Foxtailing
The tendency of certain flowers to push out new calyx growth on top of existing ones, producing spired, open buds rather than dense ones. In the majority of indica-leaning lines it is a stress symptom, typically caused by light that is too close or temperatures that is too high, and the advice is to correct the room.
In a good number of sativas, especially Thai and certain Haze lines, it is built in and will happen under a flawless room. A first-time sativa grower often wastes weeks hunting a problem that is a problem, dropping lights and temperatures only delaying an already long flower further. The listing rarely warns which type to expect; the lineage usually does.
Terpinolene (the “sativa smell”)
A terpene found in high proportion in a lot of classic sativa lines and responsible for most of the thing people describe as the “sativa” smell: fresh, piney, citrus and slightly sweet all at once. It is fragile, driven off easily by fast drying, and it degrades more quickly during storage than the heavier terpenes that dominate indica-leaning stock.
To a seed buyer the name earns two things. When a listing names terpinolene among the lead terpene, the strain probably carries real Haze-era genetics regardless of what the label says. And where the you are after that profile to survive to the jar, the cure has to be cool and cool; a warm dry turns a terpinolene line to something that tastes of hay and no trace of what the pack promised.
Flowering time (and what it is counted from)
The figure of weeks from the onset of flowering and harvest, which is the one most misunderstood number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, rather than from sowing, so a “fourteen-week” sativa started with a eight-week vegetative stage is a five-month plant. Seed companies additionally quote the shorter end of the spread, since the other end sells fewer seed.
Sativa lines run everywhere from ten weeks to well over twenty, and the longest line in the Haze Sativa Seeds range is at around 16 weeks from the flip. The catalogue can be filtered by this figure, which is the sensible first pass for a grower on a tight timetable. A grower who adds four weeks on top of the figure the pack says is rarely disappointed.
Haze
Originally a specific family of plants put together in 1970s California from Colombian, Colombian and South Indian landraces, and then kept and worked in the Netherlands. The Haze grows tall, fills out openly, takes for twelve to sixteen weeks and smells of spice, pine and something metallic that no other other line quite reproduces.
In its looser sense “Haze” is any hybrid which contains some of that family, which by now is a great many of the sativa-leaning catalogue. A listing that says “Haze” and gives no lineage may be eighty percent original classic family or a small fraction of it, and the grow time tracks the share, not the name. The useful question is not “is it a Haze” but “how much, and via which parent”.
Latitude
The one figure that determines if a sativa can ripen outdoors, and a number no pack states. Long-flowering lines require the autumn days to go on late enough for the plant to ripen; at northern latitudes the frost arrives before that, and the grower harvests a unripe plant in late October or loses it to mould in November. The closer south, within the northern hemisphere, the longer the window stretches, and Mediterranean or subtropical gardens are able to ripen lines that northern growers cannot.
The usable reading for a seed pack: an “outdoor” line finishing date is given for the breeder’s own latitude, normally a point in southern Europe or the western United States, and each step north of it pushes the date back towards the frost. A grower above roughly the fiftieth parallel who is after a true sativa in the garden is looking for an autoflower or a greenhouse, not a better summer.
