Sativa seeds come with more jargon attached than any other category of cannabis seed, and most of it says a certain thing to a botanist, something else to a seed company and a third to the person trying to make a decision in front of the pack. A failed sativa grow usually traces back to a word that was understood in the wrong one of those senses: a flowering time taken as a fixed number, a „sativa-dominant“ label taken as a statement of character, a landrace bought like it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com open for reference, because it runs heavily towards the long-flowering end of the category where the vocabulary carry the most weight most; the meanings themselves hold to any sativa seed from any shop. They are in no special order, because none of them is sense on its own without the rest.
Flowering time (and what it is counted from)
The number of weeks between the onset of flowering and harvest, which is the one most frequently misunderstood number on a sativa pack. For photoperiod seed it is counted from the day the light is cut to twelve hours, rather than from sowing, so a „fourteen-week“ sativa grown after a ordinary vegetative period is a five-month plant. Breeders additionally quote the optimistic end of a range, because the longer end moves fewer seed.
Sativa lines run anywhere from ten weeks to well over twenty, and the slowest strain in the Haze Sativa Seeds range comes in at around 16 weeks from the flip. The catalogue can be filtered by this figure, which is the sensible first step for a grower on a tight timetable. A grower who adds four weeks on top of the figure the pack says is rarely disappointed.
Latitude (outdoor sativas)
The one number that determines whether a sativa can ripen outdoors, and a number that no pack states. Equatorial lines need a run of shortening days to continue late enough to let the plant to finish; in northern latitudes the frost comes first, and the grower harvests a half-finished plant in the end of October or watches it to mould in November. A closer to the equator, within a northern hemisphere, the later the season stretches, and coastal or subtropical growers are able to ripen plants that northern growers cannot.
The practical rule for a seed listing: an „outdoor“ sativa harvest date is stated for the breeder’s own latitude, usually somewhere within temperate Europe or the west coast of the United States, and each degree further north of that pushes the finish later into the weather. A grower above roughly the fiftieth parallel that is after a long-flowering sativa in the garden needs to be looking for a sativa autoflower or a greenhouse, and not a longer season.
Sativa-dominant (the label)
The marketing category rather than a measurable one. The phrase usually means that the larger share of a hybrid’s parents are classed as sativa according to whoever drafted the description, and occasionally signals nothing more than that the flowers are longer or the aroma brighter than the that breeder’s other releases.
The effect people associate with a word, clear-headed rather than sedating, is driven far more by terpene profile and the cannabinoid content than it is by ancestry, and plenty of „sativa-dominant“ hybrids deliver a flat sleepy effect while a good number of indica-labelled stock do the opposite. To a grower the percentage is useful as a loose guide to growth habit, flowering time and stretch; as a guide to how it feels it is next to worthless unless accompanied by the aroma description.
Foxtailing (and when it is not a fault)
The tendency of certain flowers to grow fresh bud growth on top of existing ones, giving spired, irregular buds instead of round ones. In the majority of tent-bred strains it is a heat response, usually caused by light that is too close or a room too high, and the standard response is to correct the room.
In many sativas, above all Southeast Asian and certain Haze hybrids, it is built in and will occur under a flawless room. A new sativa grower frequently wastes weeks chasing a fault that is not a problem, dropping lights and heat and delaying a slow plant even more. The breeder rarely says which type you should expect; the lineage usually does.
Haze (the family, not the smell)
In its first sense a specific family of plants put together in coastal California from Mexican, Colombian and Thai parents, and then kept and refined in the Netherlands. The Haze grows tall, branches openly, takes for twelve to sixteen weeks and smells of incense, citrus and something metallic that no other line exactly has.
In its looser sense „Haze“ is whatever hybrid which carries a share of that family, and by now is most of the sativa-leaning market. A listing which says „Haze“ and gives no parents may be mostly percent original classic family or one sixteenth of it, and the flowering time follows the share, not the name. The working question is never „is it a Haze“ but „how much, and through which parent“.
Equatorial
Refers to lines out of regions in which daylength barely varies across the year, which means where the plant does not evolved a strong reaction to changing days. Such plants often start flowering reluctantly at a standard twelve-hour schedule, because twelve hours is, to them, an unremarkable day and not a signal.
The practical fix, passed around between sativa growers for decades, is to shorten the light more: eleven hours, sometimes ten, especially in the last weeks. It loses some little yield and gains a earlier clearer end. A listing that says „equatorial“ is warning you this in one word, and a grower who takes it as a note on geography has missed the point inside it.
Landrace versus heirloom
A population of plants adapted over centuries to a particular region by the local growers and growers together, and not by deliberate breeding. Colombian, Colombian, Malawian and Oaxacan lines are the classic sativa cases. A landrace is a spread, rather than a single plant: within a pack the heights, flowering times and aromas range widely than in any tent-bred hybrid, and this spread is the point of growing one.
The mistake is treating a landrace as a finished product. It carries traits that made sense in an open field, including a frame no tent can hold and a flowering rhythm tuned to a equatorial daylength most growers cannot offer. „Heirloom“ on a listing generally means a landrace that has been reproduced away from its origin over a number of generations, often with a degree of selection for indoor conditions; it is nearer to manageable but still far from uniform. A shop listing „landrace“ without an origin point and a reproduction history is applying the word loosely, and the pack should be priced with that in mind.
Hermaphroditism in long-flowering lines
The production of male flowers on a female plant, usually late in flower and frequently under stress. Every cannabis line has a degree of tendency to do; sativa lines express it more often, for a plain reason: sixteen weeks of flower is fourteen weeks of exposure for a light leak, a temperature spike or a late watering that can trigger it going, and an plant that has gone beyond its intended end often throws a few late male sacs on its own in a final effort to set seed.
Not one of these means a sativa line weak as a matter of nature; it makes the room’s consistency matter over a longer stretch. A sealed tents, steady conditions and harvesting when the plant is ready and not two week after remove the greater part of the problem. A listing that states a breeder screens parents for intersex traits is worth worth hearing for a sativa than on anything else.
Terpinolene (the „sativa smell“)
A terpene found in high proportion in many old sativa lines and accounting for much of the thing growers describe as a „sativa“ aroma: green, woody, citrus and slightly sweet all at once. It is fragile, driven off easily by hot drying, and it fades more quickly during storage than the heavier terpenes which lead indica-leaning lines.
To a seed buyer the word earns two jobs. When a listing names terpinolene among the leading terpene, the line most likely has substantial Haze-era genetics whatever 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 fast drying room turns a terpinolene sativa to something that smells of very little and leaves no trace of what the pack promised.
Stretch
The surge of upward growth which comes after the switch to flowering. Most tent-bred plants gain half again; sativas routinely double, and some landrace lines triple. The stretch lasts three to five weeks and will not be halted once it has started, only redirected by training.
In tent terms, a stretch figure is the fact to read before deciding when to flip. A sativa switched at sixty centimetres inside a standard tent is touching the lamp before week four of flower; one switched at thirty centimetres centimetres has room. People coming over from indica strains nearly always flip far too late the first time, and the lesson is written on the ceiling of the tent.