Sativa seeds arrive with more jargon attached than any other category of cannabis seed, and most of it means one thing to a botanist, another to a seed company and something different again to the grower standing in front of the pack. 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 taken as a statement of effect, a landrace bought as if it were a tent-bred hybrid. The entries below were written with the range at https://hazesativaseeds.com to hand for the concrete examples, since it leans strongly to the classic end of the category and that is where the words matter most; the definitions themselves hold to any sativa seed from any shop. They are in no particular order, because none of them makes sense without the rest.
Hermaphroditism in long-flowering lines
The production of pollen-bearing flowers on a female plant, typically late in flower and often in response to stress. Every cannabis population has some tendency for do; sativa lines express it more often, for a plain reason: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a missed watering that can set it off, and a plant that has waited past its intended end frequently throws a few desperate pollen flowers on its own as a last effort to make seed.
None of these makes a sativa strain weak by course; it makes the room’s discipline matter for longer. Light-tight room, stable temperatures and cutting when the plant is ready and not two weeks later remove the greater part of the problem. A listing which states a breeder screens parents for intersex tendency is saying something worth hearing on a long-flowering line than on any other category.
Terpinolene
A terpene found in high amounts in many old sativa lines and accounting for much of what people mean as the “sativa” smell: green, woody, citrus and slightly sweet at once. It is volatile, driven off quickly through fast drying, and terpinolene degrades more quickly in storage than the heavier terpenes that lead indica-leaning lines.
To a seed buyer the name does two things. When a listing lists terpinolene among the lead aromas, the strain most likely has real Haze-era ancestry regardless of what the label claims. And when the you wants that smell to still be there to the jar, the cure is going to be slow and slow; a warm dry turns a terpinolene sativa to something that tastes of very little and nothing of what the pack described.
Equatorial
Describes lines from regions in which daylength barely varies across the year, and where the plant never evolved a sharp reaction to shortening days. These lines often start flowering reluctantly at a conventional twelve-hour light cycle, since twelve hours is, to them, a mild unremarkable day and not a signal.
The working fix, handed down between sativa growers over decades, is to cut the light further: eleven hours, occasionally ten, especially during the last weeks. It costs some yield yield and buys a more decisive finish. A listing that says “equatorial” is warning you about this with one word, and a grower that takes it as a note on origin misses the point inside it.
Foxtailing (and when it is not a fault)
The habit of some flowers to grow fresh bud growth on top of existing ones, producing towered, irregular buds rather than dense ones. In the majority of tent-bred lines it is a stress response, typically caused by light too close or a room that is too high, and the advice is to correct the cause.
In a good number of sativas, especially Southeast Asian and certain Haze lines, it is built in and is going to occur under a flawless room. A new sativa grower often wastes a month chasing a problem that is there, dropping lights and temperatures only slowing an already long flower further. The breeder rarely says which kind you should expect; the parentage usually tells you.
Haze (the family, not the smell)
Originally a particular family of plants bred in 1970s California from Colombian, Thai and South Indian landraces, and later kept and refined in the Netherlands. The 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 other line exactly reproduces.
In its looser sense “Haze” is any cross that contains a share of that family, and today is most of the sativa-leaning market. A listing which reads “Haze” and gives no parents may be mostly percent the classic family or a sixteenth of it, and the flowering character follows the share, not the name. The working question is not “is it a Haze” but “how much, and through which parent”.
Flowering time
The number of weeks between the start of flowering and maturity, which is the one most frequently misunderstood number on a sativa pack. With photoperiod seed it is counted from the day the light is cut to twelve hours, rather than from sowing, so a “fourteen-week” sativa started with an eight-week vegetative stage is a five-month plant. Seed companies also quote the shorter end of a range, since the longer end moves fewer seed.
Long-flowering lines take everywhere from ten weeks to more than twenty, and the longest strain in the Haze Sativa Seeds range comes in at about 16 weeks from the flip. The catalogue can be filtered by this number, which is a reasonable first step for a grower on a fixed timetable. A grower who adds four weeks to whatever the pack says is seldom disappointed.
Sativa-dominant
The marketing term and not a botanical one. It generally indicates that the larger share of a hybrid’s lineage are classed as sativa by the breeder who drafted the listing, which occasionally means nothing more than a certain the buds are airier or the aroma sharper than the same breeder’s other lines.
The effect people connect with the word, lively rather than heavy, is driven far more by terpene profile and by cannabinoid content than by ancestry, and a good number of “sativa-dominant” releases produce a heavy sleepy effect and plenty of indica-labelled lines do the opposite. For a grower the percentage is useful for a rough guide to growth habit, flowering time and stretch; for a predictor to how it feels it is next to useless unless accompanied by the terpene notes.
Landrace versus heirloom
A population of plants shaped through centuries to a particular region by local climate and climate alike, and not by deliberate selection. Colombian, Colombian, Malawian and Mexican stock are the classic sativa cases. A landrace is variable, rather than a single plant: within a pack the heights, finishing times and smells range widely than any tent-bred hybrid, and this variation is the whole value of growing one.
The mistake is treating a landrace as a modern product. It carries traits that make sense in an open field, including a frame no tent can hold and a flowering rhythm set to a equatorial daylength most growers never offer. “Heirloom” in a listing generally means a landrace that has been grown out somewhere over some generations, often with light selection towards indoor life; it is closer to usable but still far from a hybrid. A seller listing “landrace” that does not give a origin point and a generation history is using the word loosely, and the pack should be priced with that in mind.
Latitude (outdoor sativas)
The single number that determines if a sativa will finish outdoors, and a number no pack prints. Equatorial lines need the autumn days to go on late enough for the plant to finish; at northern latitudes the frost arrives before that, and the grower cuts an half-finished plant in late October or loses it rot in November. The further south, within the northern hemisphere, the longer the season runs, and Mediterranean and low-latitude gardens can finish plants that northern gardens cannot.
The usable rule for a seed pack: an “outdoor” line finishing month is stated for the breeder’s own latitude, normally somewhere in temperate Europe or the western United States, and each step further north of it pushes the date back into the weather. A grower north of about the fiftieth parallel that is after a true sativa outdoors is looking for a sativa autoflower or a covered space, not a longer season.