Decoding Sativa Seed Packs: The Glossary

Sativa seeds come with more jargon around them than any other category of cannabis seed, and a good deal of it says a certain thing to a botanist, something else to a breeder and something different again to the grower standing in front of the listing. A disappointing 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” tag read as a statement of effect, a landrace chosen as if it were a tent-bred hybrid. The entries below were written with the range at https://hazesativaseeds.com to hand as reference, since it runs heavily towards the long-flowering end of the category and that is where the words carry the most weight most; the meanings though hold to any sativa seed from any shop. They are given in no particular order, because none of them makes sense without the rest.

Latitude

The one figure that determines whether a sativa will finish outdoors, and one no pack prints. Long-flowering lines require a autumn days to continue long enough for the plant to ripen; in high latitudes the frost arrives first, and the grower harvests an unripe plant in late October or loses it rot in November. A further to the equator, within a northern hemisphere, the later the window stretches, and Mediterranean or subtropical growers are able to finish lines that temperate gardens never will.

The practical reading for a seed listing: an “outdoor” sativa finishing month is given for the breeder’s home latitude, normally a point within southern Europe or the western United States, and every degree further north of it pushes the finish later towards the weather. A grower north of roughly the fiftieth parallel that wants a long-flowering sativa outdoors needs to be shopping for a sativa autoflower or else a greenhouse, not a better summer.

Flowering time (and what it is counted from)

The number of weeks between the onset of flowering and harvest, and the single most misread number on a sativa pack. With photoperiod seed it is measured from the day the light drops to twelve hours, not from germination, so a “fourteen-week” sativa started with a eight-week vegetative stage is a twenty-two-week plant. Breeders also give the shorter end of the spread, because the longer end moves fewer seed.

Long-flowering lines run anywhere from ten weeks to more than 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 that figure, which is a reasonable first pass for a room on a fixed timetable. A grower who allows four weeks on top of whatever the pack says is seldom caught out.

Intersex tendency

The appearance of male flowers on a female plant, typically towards the end in flower and often under stress. Almost every cannabis population has a degree of tendency for do; long-flowering plants express it more, for a simple one: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a missed watering to trigger it going, and a plant that has waited beyond its natural finish frequently throws a few late pollen sacs on its own in a final attempt to make seed.

None of this makes a sativa strain unstable by course; it means the grower’s consistency matter over a longer stretch. A sealed room, stable temperatures and harvesting when the plant is done rather than two weeks later take away most of the risk. A listing which mentions a breeder tests parents for intersex tendency is worth worth hearing for a sativa than for any else.

Stretch (the doubling)

The burst of upward growth that comes after the change to flowering. Indica-leaning plants gain half again; sativas routinely double, and a few landrace lines triple. The stretch lasts two to five weeks and cannot be stopped once it has started, only redirected by training.

In practical terms, the stretch figure is the fact to read before choosing when to switch. A sativa flipped at sixty centimetres centimetres in a standard tent is at the lamp by week four of flower; one switched at thirty centimetres has room. People moving from indica stock almost always flip far too late the first time, and the lesson is visible on the ceiling of the tent.

Sativa-dominant

A catalogue category rather than a measurable one. The phrase generally means that more of a hybrid’s lineage were described as sativa by whoever wrote the listing, which sometimes means no more than that the flowers are airier or the smell brighter than the that breeder’s indica-labelled releases.

The effect people connect with the word, clear-headed rather than sedating, is driven far more by terpene profile and by cannabinoid content than it is by the sativa fraction, and a good number of “sativa-dominant” hybrids deliver a heavy couch result while a good number of indica-labelled lines do exactly the opposite. For a buyer the percentage is useful as a rough guide to growth habit, flowering time and stretch; for a guide to effect it is close to useless unless accompanied by the aroma description.

Haze (the family, not the smell)

In its first sense a particular family of plants bred in 1970s California from Mexican, Colombian and South Indian parents, and then kept and worked in the Netherlands. The Haze grows tall, fills out sparsely, flowers for twelve to to sixteen weeks and smells of spice, citrus and a note metallic that no other line exactly reproduces.

In its looser sense “Haze” is any hybrid which carries some of that family, and today is most of the sativa-leaning market. A listing that says “Haze” without lineage may be eighty percent original old family or a small fraction of it, and the flowering time follows the share, not the name. The useful question is never “is it a Haze” but “how much, and via which parent”.

Landrace

A population of plants adapted through centuries to one region by the local growers and climate alike, and not by modern breeding. Thai, Thai, Malawian and Oaxacan lines are the classic sativa cases. A landrace is variable, not a one plant: within a pack the flowering times, finishing times and smells range widely than in any tent-bred line, and this variation is the point of growing one.

The mistake is treating a landrace as a finished product. It brings habits that made sense in an equatorial field, including height no tent can hold and a flowering clock tuned to an daylength most growers cannot offer. “Heirloom” on a listing generally refers to a landrace that has been grown out somewhere over a number of generations, often with a degree of selection for tent conditions; it is nearer to usable but nonetheless far from uniform. A seller listing “landrace” that does not give a origin point and a reproduction count is using the word as a flavour, and the pack should be judged accordingly.

Foxtailing (and when it is not a fault)

The habit of some flowers to push out fresh bud clusters on top of existing ones, giving spired, open buds instead of dense ones. In the majority of tent-bred lines it is a stress response, usually from light too close or temperatures too high, and the standard response is to fix the cause.

In a good number of sativas, above all Thai and some Haze lines, it is genetic and will happen in a perfect room. A new sativa grower frequently wastes weeks chasing a fault that is there, dropping lights and temperatures only delaying a long plant further. The breeder seldom says which kind you should expect; the parentage usually tells you.

Equatorial

Describes plants out of latitudes where daylength hardly changes through the year, which means that the plant never develop a strong response to shortening days. Such plants frequently flower slowly at a conventional twelve-hour light cycle, because twelve hours is, for them, an unremarkable day rather than a signal.

The practical fix, handed around between sativa growers for decades, is to shorten the light more: eleven hours, sometimes ten, particularly during the last weeks. It loses some little yield and buys a more clearer end. A listing which says “equatorial” is warning you this in one word, and a grower who reads it as a note on geography has missed the point inside it.

Terpinolene

A terpene present in large amounts in many old sativa strains and accounting for most of the thing people mean as a “sativa” smell: fresh, woody, lemon and faintly floral all at once. It is volatile, lost quickly through fast drying, and terpinolene degrades more quickly during storage than the earthier terpenes that dominate most tent stock.

To a seed buyer the name does two jobs. Where a listing lists terpinolene as the leading terpene, the strain probably has real Haze-era genetics regardless of what the percentage claims. And when the grower are after that profile to still be there by the jar, the drying has to be cool and cool; a warm dry turns a terpinolene line to something that tastes of very little and leaves no trace of what the pack promised.