Sativa Seeds, Term by Term

Sativa seeds arrive with more jargon attached than any other category of cannabis seed, and a good deal of it means one thing to a botanist, something else to a breeder and a third to the grower trying to make a decision 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 promise, a « sativa-dominant » tag taken as a statement of character, a landrace chosen like it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand for reference, since it runs strongly to the classic end of the category where the words matter most; the meanings themselves hold to any sativa seed from any seller. They are given in no particular order, since none of them is sense without the rest.

Terpinolene

A terpene found in large amounts in a lot of classic sativa strains and accounting for most of what growers mean as a « sativa » aroma: fresh, woody, citrus and slightly floral at once. It is fragile, driven off easily by fast drying, and it degrades more quickly in storage than the heavier terpenes which dominate indica-leaning stock.

For a seed buyer the word does two things. Where a listing names terpinolene as the lead terpene, the line most likely carries substantial old-sativa genetics whatever the percentage says. And when the grower are after that smell to survive by the jar, the cure has to be cool and slow; a fast drying room turns a terpinolene line to a flower that smells of hay and no trace of what the pack described.

Stretch

The surge of upward growth that follows the change to flowering. Indica-leaning plants gain half again; sativas routinely double, and a few landrace types go further. The stretch continues three to four weeks and will not be halted once it begins, only redirected by training.

In tent terms, a stretch figure is a fact to read ahead of choosing when to flip. A sativa switched at sixty centimetres inside a standard tent is touching the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. Growers coming from indica strains nearly always flip too late the first time, and the consequence is visible on the ceiling of the tent.

Haze (the family, not the smell)

Originally a particular family of plants put together in coastal California from Colombian, Colombian and South Indian landraces, and later preserved and refined in the Netherlands. The Haze grows tall, branches openly, flowers for twelve sixteen weeks and carries a scent of incense, citrus and something metallic that no line exactly reproduces.

In its looser sense « Haze » is whatever cross that carries a share of that family, which by now is most of the sativa-leaning catalogue. A listing which reads « Haze » and gives no lineage may be mostly percent the old family or a sixteenth of it, and the flowering time tracks the fraction, not the name. The useful question is never « is it a Haze » but « how much, and via which parent ».

Equatorial

Refers to plants from regions in which daylength hardly changes across the year, which means where the plant never develop a sharp reaction to changing days. Such lines often flower slowly under a conventional twelve-hour schedule, since twelve hours is, for them, a mild unremarkable day rather than a signal.

The working fix, passed around between sativa growers for decades, is to cut the light further: eleven hours, sometimes ten, especially in the final weeks. It costs a little yield and buys a earlier clearer end. A listing which uses « equatorial » is telling you about this with one word, and a grower that takes it as mere geography has missed the instruction hidden in it.

Foxtailing (and when it is not a fault)

The tendency of some flowers to grow new calyx growth on top of old ones, producing spired, irregular buds rather than round ones. In the majority of tent-bred lines it is a heat response, usually from light that is too close or a room too high, and the standard response is to fix the cause.

In many sativas, especially Thai and some Haze hybrids, it is genetic and is going to happen in a flawless room. A first-time sativa grower often wastes weeks hunting a fault that is not a problem, dropping lights and heat and slowing an already long plant further. The listing seldom warns which kind to expect; the parentage usually tells you.

Landrace

A population of plants adapted through centuries to a particular place by the local growers and growers alike, rather than by deliberate selection. Colombian, Thai, Congolese and Mexican lines are the sativa cases. A landrace is variable, not a one plant: inside a pack the heights, finishing times and smells range widely than any tent-bred line, and this variation is the whole value of keeping one.

The mistake is buying a landrace as a finished hybrid. It brings habits that make sense in an equatorial field, such as height that no tent can contain and a flowering clock set to a equatorial daylength most growers cannot provide. « Heirloom » in a listing usually refers to a landrace that has been grown out somewhere over some generations, often with a degree of selection towards tent conditions; it is nearer to usable but still far from a hybrid. A seller offering « landrace » without a origin point and a reproduction history is applying the word loosely, and the pack should be judged accordingly.

Latitude

The single number that decides whether a sativa will ripen outdoors, and a number no pack prints. Long-flowering lines require the run of shortening days to go on long enough for the plant to finish; at northern latitudes the frost arrives first, and the grower cuts a unripe plant in the end of October or watches it rot in November. A further south, in the northern hemisphere, the longer the season stretches, and Mediterranean or low-latitude growers can ripen plants that northern gardens cannot.

The practical reading for a seed pack: an « outdoor » sativa finishing date is given for the breeder’s home latitude, normally somewhere within temperate Europe or the western United States, and each step further north of that pushes the date back into the weather. A grower north of about the fiftieth parallel that is after a long-flowering sativa in the garden needs to be looking for an autoflower or a covered space, not a longer season.

Flowering time (and what it is counted from)

The figure of weeks between the onset of flowering and harvest, which is the single most frequently misread number on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, rather than from germination, so a « fourteen-week » sativa grown with an eight-week vegetative period is a five-month plant. Seed companies additionally quote the optimistic end of a spread, because the other end sells less seed.

Long-flowering plants take anywhere from ten weeks to well over twenty, and the longest strain in the Haze Sativa Seeds range is at around 16 weeks from the flip. The catalogue can be filtered by this number, which is the reasonable first pass if you have a room with a fixed timetable. A grower who adds four weeks to the figure the pack states is seldom disappointed.

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. Almost every cannabis line carries some tendency to it; long-flowering lines show it more often, for one simple one: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a heat spike or a late watering to set it going, and a plant plant has waited past its intended finish often throws a few late male flowers on its own in a final attempt to make seed.

None of these means a sativa line weak by nature; it means the room’s consistency count for longer. Light-tight tents, steady conditions and cutting the moment the plant is ready and not a weeks after take away the greater part of the problem. A listing that states a breeder screens parents for intersex traits is saying something worth hearing on a long-flowering line than for anything other category.