What the Words on a Sativa Seed Pack Really Mean

Sativa seeds come with more jargon around them than any other kind of cannabis seed, and a good deal of it means one thing to a botanist, another to a seed company and a third to the grower standing in front of the pack. The disappointing sativa grow nearly always goes back to a word that was understood in the wrong one of those senses: a flowering time taken as a promise, a « sativa-dominant » tag taken as a description of effect, a landrace chosen as if it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com open for the concrete examples, since it leans strongly 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 seller. They are given in no special order, because not one of them makes sense without the rest.

Intersex tendency

The production of male flowers on a female plant, usually towards the end in flower and often under stress. Almost every cannabis population has some capacity for do; long-flowering lines express it more, and the reason is a plain one: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a heat spike or a missed watering to trigger it going, and a plant plant has already gone past its intended finish frequently produces a few desperate pollen flowers on its own as a final effort to make seed.

None of this makes a sativa line unstable as a matter of nature; it makes the grower’s discipline matter for longer. A sealed tents, steady temperatures and cutting when the plant is ready and not a week later take away the greater part of the risk. A listing that mentions the breeder tests parents for intersex tendency is worth more for a sativa than for anything other category.

Landrace versus heirloom

A population of plants shaped over generations to a particular region by the local growers and growers alike, rather than by modern breeding. Thai, Colombian, Malawian and Mexican stock are the sativa cases. A landrace is variable, rather than a single plant: inside a pack the heights, finishing times and smells spread widely than in a tent-bred hybrid, and that variation is the whole value of growing one.

The trap is buying a landrace as a modern hybrid. It carries traits that made sense in an equatorial field, such as height no tent can contain and a flowering clock tuned to an equatorial daylength the majority of growers never offer. « Heirloom » on a listing usually refers to a landrace that has been grown out somewhere for some generations, typically with light selection towards indoor conditions; it is nearer to usable but nonetheless far from a hybrid. A shop listing « landrace » that does not give an origin point and a generation count is applying the word loosely, and the pack should be judged accordingly.

Foxtailing

The tendency of certain flowers to push out fresh calyx clusters on top of old ones, producing towered, irregular buds rather than dense ones. In the majority of tent-bred strains it is a heat symptom, typically from light too close or temperatures that is too high, and the advice is to correct the cause.

In many sativas, above all Thai and some Haze hybrids, it is genetic and will happen in a perfect room. A first-time sativa grower often wastes weeks hunting a problem that is a problem, lowering lights and heat and slowing a long flower further. The breeder rarely says which type to expect; the lineage generally does.

Equatorial (the twelve-hour problem)

Refers to plants from latitudes in which daylength barely varies across the year, which means that the plant does not evolved a strong reaction to changing days. Such plants frequently start flowering reluctantly at a conventional twelve-hour schedule, since twelve hours is, for them, a mild unremarkable day rather than a signal.

The working fix, handed around among sativa growers for decades, is to shorten the light more: eleven hours, sometimes ten, particularly during the final weeks. It costs a little yield and gains a more clearer finish. A listing which uses « equatorial » is telling you about this with one word, and a grower who reads it as a note on origin misses the point inside it.

Stretch

The surge of upward growth which comes after the change to flowering. Indica-leaning plants add half again; sativas routinely double, and some equatorial types triple. The stretch continues three to four weeks and will not be halted once it has started, only redirected by training.

In tent terms, the stretch multiplier is the number worth reading before deciding when to switch. A sativa flipped at sixty centimetres inside a standard tent is touching the lamp before week four of flower; one switched at thirty centimetres centimetres has room. Growers moving from indica strains almost always switch far too late the first time, and the lesson is visible on the ceiling of the tent.

Sativa-dominant

The marketing term and not a botanical one. It usually means that more of a hybrid’s parents were classed as sativa according to whoever wrote the description, and occasionally means no more than that the flowers are airier or the smell brighter than the same breeder’s indica-labelled lines.

The effect people associate with the word, lively rather than sedating, is driven more by terpene profile and by cannabinoid content than by ancestry, and plenty of « sativa-dominant » hybrids deliver a flat couch result while a good number of the opposite stock deliver the opposite. To a grower the label is worth something as a loose guide to growth habit, flowering time and stretch; as a predictor to effect it is close to worthless without the aroma notes.

Haze (the family, not the smell)

In its first sense a specific family of plants put together in 1970s California from Colombian, Colombian and Thai landraces, and then kept and worked in the Netherlands. A true Haze grows tall, fills out sparsely, takes for twelve to sixteen weeks and carries a scent of incense, citrus and a note metallic that no other line exactly reproduces.

In its looser sense « Haze » is whatever hybrid which contains a share of that family, and by now is most of the sativa-leaning market. A listing which reads « Haze » without lineage could be mostly percent original old family or one small fraction of it, and the grow time tracks the share, not the name. The useful question is not « is it a Haze » but « how much, and through which parent ».

Latitude

The one number that determines whether a sativa will ripen outdoors, and a number that no pack states. Long-flowering plants require the run of shortening days to continue long enough for the plant finish; in high latitudes the frost comes first, and the grower cuts a unripe plant in late October or loses it rot in November. The further to the equator, in a northern hemisphere, the longer the window runs, and Mediterranean and subtropical growers can ripen lines that northern gardens cannot.

The practical reading of a seed listing: an « outdoor » sativa finishing month is stated for the breeder’s own latitude, normally somewhere within temperate Europe or the western United States, and every step further north of it moves the finish back towards the frost. A grower north of about the fiftieth parallel that wants a long-flowering sativa in the garden is looking for a sativa autoflower or else a greenhouse, and not a better season.

Terpinolene

A terpene found in large proportion in many old sativa strains and responsible for much of the thing growers describe as a « sativa » aroma: green, piney, lemon and slightly floral all at once. It is volatile, driven off easily through hot drying, and terpinolene degrades faster during storage than the earthier terpenes that lead indica-leaning stock.

To a seed buyer the name does two things. Where a listing names terpinolene as the lead aromas, the strain probably has real old-sativa ancestry regardless of what the label claims. And where the grower are after that smell to survive by the jar, the cure has to be cool and cool; a warm drying room turns a terpinolene sativa to something that tastes of very little and leaves nothing of what the pack promised.

Flowering time

The number of weeks between the start of flowering and maturity, and the single most frequently misread number on a sativa pack. For photoperiod seed it is measured from the day the light drops to twelve hours, rather than from germination, so a « fourteen-week » sativa started with an ordinary vegetative period is a twenty-two-week plant. Seed companies also give the shorter end of the spread, since the longer end sells less seed.

Long-flowering lines run anywhere from ten weeks to well over twenty, and the slowest line 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 sensible first step if you have a room with a fixed timetable. A grower who allows four weeks to whatever the pack says is seldom disappointed.