Sativa seeds come with more jargon around them than any other kind of cannabis seed, and most of it means a certain thing to a botanist, another to a breeder and something different again to the person standing in front of the listing. The disappointing sativa grow usually traces back to a word that was understood in the wrong one of those senses: a flowering time read as a promise, a «sativa-dominant» tag read as a description of effect, a landrace chosen as if it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com to hand as reference, since it leans strongly towards the classic end of the category and that is where the vocabulary carry the most weight most; the meanings though apply to any sativa seed from any shop. They are given in no special order, because none of them makes sense on its own without the rest.
Landrace versus heirloom
A population of plants adapted over generations to a particular region by local growers and climate alike, rather than by deliberate breeding. Colombian, Thai, Congolese and Mexican stock are the sativa examples. A landrace is a spread, not a one plant: inside a pack the flowering times, flowering times and smells spread far more than any tent-bred hybrid, and that variation is the point of keeping one.
The mistake is buying a landrace like a modern hybrid. It carries habits that make sense in an open field, including a frame no tent can hold and a flowering clock tuned to a equatorial daylength the majority of growers never offer. «Heirloom» on a listing generally means a landrace that has been reproduced away from its origin over a number of generations, typically with a degree of selection for tent conditions; it is closer to usable but nonetheless far from uniform. A seller listing «landrace» that does not give a collection point and a generation history is applying the word loosely, and the seeds should be priced accordingly.
Equatorial
Refers to lines out of latitudes where daylength hardly changes through the year, which means that the plant never develop a strong response to shortening days. These lines often start flowering slowly at a standard twelve-hour schedule, because twelve hours is, to them, a mild ordinary day rather than a signal.
The practical response, passed down between sativa growers for decades, is to cut the light more: eleven hours, sometimes ten, especially during the last weeks. It costs some yield yield and buys a more decisive finish. A listing which uses «equatorial» is warning you about this in one word, and a grower who reads it as mere origin has missed the instruction inside it.
Stretch
The burst of upward growth which comes after the switch to flowering. Most tent-bred plants gain around half their height again; sativas commonly double, and some landrace types triple. The stretch continues three to five weeks and will not be halted after it begins, only redirected by training.
In practical terms, the stretch multiplier is the number to read ahead of choosing when to flip. A sativa switched at sixty centimetres centimetres inside a standard tent is touching the lamp before week four of flower; one switched at thirty centimetres has room. Growers moving from indica strains almost always flip far too late the first time, and the lesson is written on the ceiling of the tent.
Haze (the family, not the smell)
Originally a specific family of plants put together in 1970s California from Colombian, Thai and Thai parents, and later preserved and worked in the Netherlands. A true Haze grows tall, branches sparsely, flowers for twelve to sixteen weeks and carries a scent of spice, pine and a note sharp that no other line exactly reproduces.
In its looser sense «Haze» is any cross that carries a share of that family, and by now is most of the sativa-leaning market. A listing that reads «Haze» and gives no parents could be eighty percent the classic 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 via which parent».
Foxtailing
The tendency of some flowers to push out new calyx growth on top of old ones, producing spired, irregular buds rather than round ones. In the majority of tent-bred lines it is a heat symptom, typically from light that is too close or temperatures that is too high, and the advice is to fix the room.
In many sativas, especially Thai and certain Haze lines, it is genetic and will occur under a flawless room. A new sativa grower frequently spends weeks hunting a problem that is there, dropping lights and temperatures only slowing an already long flower even more. The breeder rarely says which type to expect; the lineage usually does.
Latitude (outdoor sativas)
The single number that determines whether a sativa will finish outdoors, and a number no pack prints. Equatorial lines need a run of shortening days to continue late enough for the plant ripen; in northern latitudes the frost arrives first, and the grower cuts a unripe plant in the end of October or loses it to mould in November. A further to the equator, in a northern hemisphere, the later the season runs, and Mediterranean and subtropical gardens are able to ripen lines that northern growers never will.
The practical reading for a seed pack: an «outdoor» sativa finishing month is given for the breeder’s home latitude, usually somewhere within southern Europe or the western United States, and each step north of that pushes the date back towards the weather. A grower above about the fiftieth parallel who wants a true sativa in the garden is looking for a sativa autoflower or else a greenhouse, and not a better season.
Hermaphroditism in long-flowering lines
The appearance of male flowers on a female plant, usually late in flower and frequently in response to stress. Every cannabis line has some tendency to do; long-flowering plants show it more often, for one plain reason: sixteen weeks of flower is fourteen weeks of exposure for a timer leak, a heat spike or a missed watering that can set it going, and a plant plant has already waited beyond its intended finish frequently produces a few desperate pollen sacs on its own as a last attempt to make seed.
Not one of this means a sativa strain unstable as a matter of course; it makes the grower’s discipline count for longer. A sealed room, stable temperatures and cutting when the plant is done and not a weeks later remove most of the risk. A listing that mentions the breeder screens parents for intersex tendency is saying something more on a sativa than for anything other category.
Terpinolene (the «sativa smell»)
A aromatic compound found in high amounts in a lot of old sativa strains and accounting for much of what people describe as a «sativa» smell: green, piney, lemon and faintly sweet all at once. It is fragile, lost easily through fast drying, and terpinolene degrades faster in storage than the earthier terpenes that dominate most tent stock.
For a seed buyer the name does two jobs. Where a listing lists terpinolene as the leading terpene, the line most likely carries real old-sativa genetics regardless of what the percentage claims. And where the you wants that smell to survive to the jar, the drying has to be slow and cool; a fast drying room flattens a terpinolene line into a flower that tastes of hay and leaves nothing of what the pack promised.
Flowering time (and what it is counted from)
The figure of weeks between the onset of flowering and harvest, which is the single most frequently misunderstood number on a sativa pack. With photoperiod seed it is measured from the day the light drops to twelve hours, rather than from sowing, so a «fourteen-week» sativa started after a eight-week vegetative period is a five-month plant. Seed companies additionally quote the shorter end of the range, since the other end moves fewer seed.
Long-flowering plants take anywhere from ten weeks to more than twenty, and the longest line in the Haze Sativa Seeds range comes in at around 16 weeks from the switch. The catalogue can be filtered by this number, which is the reasonable first step for a room on a fixed timetable. A grower who allows four weeks on top of whatever the pack states is seldom disappointed.
Sativa-dominant (the label)
A marketing category rather than a botanical one. The phrase usually indicates that more of a hybrid’s parents are classed as sativa by whoever wrote the listing, and occasionally means no more than a certain the flowers are airier or the aroma sharper than the that breeder’s other lines.
The effect people connect with a word, clear-headed instead of heavy, is governed far more by terpene chemistry and the THC balance than it is by ancestry, and plenty of «sativa-dominant» releases deliver a heavy sleepy result while a good number of indica-labelled stock do the reverse. For a grower the percentage is useful as a rough hint to growth habit, flowering time and stretch; for a guide to effect it is next to worthless without the terpene description.