Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and a good deal of it means a certain thing to a botanist, another to a seed company and a third to the person standing in front of the pack. The failed sativa grow nearly always traces back to a word that was understood in the wrong sense: a flowering time read as a fixed number, a „sativa-dominant“ label read as a description of effect, a landrace bought like it were a modern hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand for reference, because it leans strongly towards the long-flowering end of the category where the words carry the most weight most; the meanings themselves apply to any sativa seed from any seller. They are in no particular order, since none of them is sense without the rest.

Flowering time (and what it is counted from)

The figure of weeks between the onset of flowering and harvest, which is the one most misread figure on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, not from sowing, so a „fourteen-week“ sativa grown with a eight-week vegetative stage is a five-month plant. Seed companies also give the optimistic end of the spread, since the other end moves less seed.

Sativa plants take everywhere from ten weeks to more than twenty, and the slowest strain in the Haze Sativa Seeds range is at about 16 weeks after the switch. The catalogue can be filtered by this figure, which is the reasonable first pass for a room with a fixed schedule. A grower who adds four weeks to whatever the pack states is rarely caught out.

Stretch (the doubling)

The burst of vertical growth that follows the switch to flowering. Indica-leaning plants add half again; sativas commonly double, and some equatorial lines go further. The stretch continues three to five weeks and cannot be stopped after it begins, merely bent sideways by training.

In tent terms, a stretch figure is the number worth read ahead of choosing when to switch. A sativa switched at sixty centimetres centimetres inside a standard tent is at the lamp by week four of flower; one switched at thirty centimetres centimetres has room. Growers coming from indica stock nearly always switch far too late the first time, and the lesson is written on the ceiling of the tent.

Latitude (outdoor sativas)

The one number that decides whether a sativa will ripen outdoors, and one no pack states. Long-flowering lines need a run of shortening days to go on long enough to let the plant ripen; at northern latitudes the frost comes before that, and the grower cuts a half-finished plant in late October or watches it to mould in November. The further to the equator, within the northern hemisphere, the later the season runs, and coastal or subtropical growers are able to finish plants that northern gardens never will.

The usable rule of a seed listing: an „outdoor“ sativa finishing date is given for the breeder’s own latitude, usually a point within temperate Europe or the western United States, and every degree further north of it pushes the finish back into the frost. A grower above about the fiftieth parallel that wants a true sativa in the garden is looking for an autoflower or else a greenhouse, and not a better season.

Landrace

A population of plants adapted through generations to one region by the local growers and growers alike, rather than by deliberate selection. Thai, Thai, Congolese and Oaxacan stock are the classic sativa cases. A landrace is variable, rather than a single plant: within a pack the heights, flowering times and aromas range widely than in any tent-bred hybrid, and this variation is the point of keeping one.

The trap is buying a landrace like a finished hybrid. It carries habits that made sense in an open field, including a frame no tent can hold and a flowering rhythm tuned to a daylength most growers never provide. „Heirloom“ on a listing generally means a landrace that has been reproduced away from its origin for a number of generations, typically with light selection towards indoor life; it is closer to manageable but still far from uniform. A shop listing „landrace“ without a collection region and a reproduction history is applying the word as a flavour, and the pack should be judged with that in mind.

Foxtailing

The habit of some flowers to push out new bud growth on top of existing ones, giving spired, open buds rather than dense ones. In the majority of tent-bred lines it is a heat symptom, typically caused by light that is too close or a room that is too high, and the standard response is to fix the room.

In many sativas, above all Thai and some Haze hybrids, it is genetic and will occur in a flawless room. A first-time sativa grower often wastes a month hunting a problem that is not a problem, dropping lights and heat and delaying an already slow flower further. The listing rarely warns which type to expect; the lineage usually tells you.

Haze (the family, not the smell)

Originally a particular line of plants put together in coastal California from Mexican, Colombian and Thai parents, and then preserved and worked in the Netherlands. The Haze grows tall, fills out openly, flowers for twelve to to sixteen weeks and carries a scent of incense, pine and a note metallic that no other line exactly has.

In its looser sense „Haze“ is any hybrid which carries some of that family, which today is most of the sativa-leaning catalogue. A listing which reads „Haze“ without lineage may be mostly percent original old family or one sixteenth of it, and the grow character follows the share, not the name. The working question is never „is it a Haze“ but „how much, and through which parent“.

Equatorial

Describes lines from regions where daylength barely changes across the year, which means where the plant never develop a sharp response to shortening days. Such plants often start flowering reluctantly under a conventional twelve-hour schedule, since twelve hours is, to them, a mild ordinary day rather than a signal.

The practical response, handed around between sativa growers over decades, is to cut the light further: eleven hours, occasionally ten, particularly during the last weeks. It loses some little yield and buys an earlier clearer end. A listing that says „equatorial“ is telling you about this with one word, and a grower who takes it as a note on origin misses the instruction inside it.

Sativa-dominant

The marketing category rather than a measurable one. It generally means that the larger share of a hybrid’s parents are described as sativa according to whoever wrote the listing, and sometimes signals nothing more than that the flowers are airier or the smell sharper than the that breeder’s other releases.

The experience people connect with the word, lively rather than heavy, is driven more by terpene chemistry and the cannabinoid balance than by ancestry, and a good number of „sativa-dominant“ hybrids produce a heavy couch result and a good number of indica-labelled stock do exactly the opposite. To a buyer the percentage is worth something as a rough hint to growth habit, flowering time and stretch; for a guide to effect it is next to useless without the aroma description.

Terpinolene

A terpene found in high proportion in many classic sativa lines and accounting for much of what growers describe as the „sativa“ smell: green, piney, citrus and faintly floral at once. It is fragile, driven off easily through hot drying, and it degrades faster during storage than the earthier terpenes that lead indica-leaning stock.

For a seed buyer the word earns two jobs. When a listing names terpinolene as the leading aromas, the strain probably has substantial Haze-era ancestry regardless of what the percentage says. And where the grower wants that profile to survive to the jar, the cure has to be cool and cool; a warm drying room flattens a terpinolene sativa to a flower that smells of very little and nothing of what the pack described.

Intersex tendency

The production of male flowers on a female plant, usually late in flower and often under stress. Every cannabis line has some tendency to do; sativa lines express it more often, and the reason is one plain reason: fourteen weeks of flower is fourteen weeks of exposure for a light leak, a temperature spike or a missed watering to trigger it off, and a plant that has already gone beyond its intended end often throws a few late male sacs on its own in a final attempt to set seed.

None of this makes a sativa strain weak as a matter of nature; it makes the grower’s discipline count over a longer stretch. Light-tight tents, steady conditions and cutting the moment the plant is done and not two week after take away most of the problem. A listing which mentions the breeder screens parents for intersex traits is worth worth hearing for a long-flowering line than for anything else.