Sativa seeds arrive with more vocabulary attached 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 something different again to the grower trying to make a decision in front of the listing. The disappointing sativa grow usually traces back to a word that was read in the wrong sense: a flowering time read as a promise, a “sativa-dominant” label taken as a statement of effect, a landrace chosen like it were a modern hybrid. The entries below are written with the range at https://hazesativaseeds.com open as reference, because it runs heavily towards the classic end of the spectrum where the words matter most; the definitions themselves hold to any sativa seed from any shop. They are in no special order, since not one of them is usable on its own without the others.
Stretch
The surge of upward growth that follows the switch to flowering. Indica-leaning plants gain around half again; sativas routinely double, and some equatorial lines go further. The stretch continues three to four weeks and cannot be halted after it begins, merely redirected by training.
In practical terms, the stretch multiplier is the fact to reading ahead of deciding when to switch. A sativa switched at sixty centimetres centimetres in a two-metre tent is at the lamp by week four of flower; one flipped at thirty centimetres has room. People moving from indica stock nearly always switch too late the first time, and the consequence is written on the ceiling of the tent.
Latitude
The single number that decides if a sativa will finish outdoors, and one that no pack prints. Equatorial lines require a run of shortening days to go on long enough for the plant to finish; at high latitudes the frost comes before that, and the grower harvests a unripe plant in the end of October or else loses it to mould in November. The further south, within the northern hemisphere, the longer the window runs, and Mediterranean and low-latitude gardens can ripen plants that northern gardens never will.
The usable reading for a seed pack: an “outdoor” sativa finishing month is stated for the breeder’s own latitude, normally somewhere in temperate Europe or the west coast of the United States, and each degree further north of that pushes the date later into the weather. A grower above roughly the fiftieth parallel that wants a long-flowering sativa in the garden needs to be shopping for an autoflower or a covered space, not a longer summer.
Foxtailing (and when it is not a fault)
The habit of some flowers to grow fresh calyx growth on top of old ones, producing towered, open buds rather than dense ones. In the majority of indica-leaning strains it is a heat symptom, typically caused by light that is too close or temperatures too high, and the standard response is to fix the cause.
In a good number of sativas, especially Thai and certain Haze hybrids, it is genetic and is going to happen under a flawless room. A new sativa grower frequently spends a month hunting a fault that is not there, lowering lights and heat and delaying an already long plant further. The breeder seldom says which type you should expect; the lineage generally does.
Flowering time
The number of weeks from the onset of flowering and harvest, which is the single most misread number on a sativa pack. With 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 eight-week vegetative period is a five-month plant. Breeders additionally give the shorter end of the spread, because the other end moves fewer seed.
Long-flowering lines take anywhere from ten weeks to more than twenty, and the longest line in the Haze Sativa Seeds range comes in at around 16 weeks after the flip. The catalogue can be sorted by that number, which is the reasonable first pass for a grower on a fixed timetable. A grower who allows four weeks on top of whatever the pack states is rarely caught out.
Haze (the family, not the smell)
Originally a particular family of plants put together in coastal California from Colombian, Thai and South Indian landraces, and then preserved and refined in the Netherlands. The Haze grows tall, fills out openly, flowers for twelve sixteen weeks and smells of incense, pine and something metallic that no line quite reproduces.
In its looser sense “Haze” is whatever cross which contains a share of that family, which by now is most of the sativa-leaning catalogue. A listing that reads “Haze” without parents may be mostly percent original classic family or one sixteenth of it, and the flowering time tracks the fraction, not the name. The working question is never “is it a Haze” but “how much, and through which parent”.
Intersex tendency
The production of male flowers on a female plant, typically late in flower and frequently in response to stress. Every cannabis line carries some tendency for it; long-flowering lines show it more often, and the reason is a simple one: sixteen weeks of flower is sixteen weeks of opportunity for a timer leak, a heat spike or a missed watering to set it going, and a plant plant has already waited beyond its intended finish often produces a few late male sacs on its own in a final effort to set seed.
None of this makes a sativa line weak by course; it means the room’s consistency matter over longer. A sealed tents, stable temperatures and harvesting when the plant is ready rather than two weeks after remove the greater part of the problem. A listing which states the breeder screens parents for intersex tendency is worth more for a long-flowering line than for any else.
Sativa-dominant
The catalogue term and not a botanical one. It usually indicates that more of a hybrid’s lineage are classed as sativa according to the breeder who wrote the listing, which sometimes means nothing more than a certain the buds are longer or the smell sharper than the that breeder’s indica-labelled releases.
The effect people associate with a word, clear-headed rather than sedating, is governed more by terpene profile and by cannabinoid content than it is by ancestry, and a good number of “sativa-dominant” releases deliver a heavy sleepy result and plenty of the opposite stock do the opposite. To a grower the label is useful as a rough hint to growth habit, flowering time and stretch; as a predictor to how it feels it is close to useless without the aroma notes.
Landrace versus heirloom
A population of plants adapted through generations to a particular place by the local climate and growers alike, and not by modern breeding. Colombian, Colombian, Malawian and Mexican stock are the classic sativa cases. A landrace is a spread, not a one plant: inside a pack the heights, finishing times and smells spread widely than in any tent-bred line, and that variation is the point of growing one.
The trap is treating a landrace like a modern hybrid. It carries traits that made sense in an equatorial field, such as height that no tent can contain and a flowering clock set to an daylength most growers never offer. “Heirloom” in a listing generally means a landrace that has been grown out somewhere for a number of generations, typically with a degree of selection for indoor life; it is nearer to manageable but nonetheless far from a hybrid. A seller listing “landrace” without an collection point and a reproduction history is using the word as a flavour, and the seeds should be judged with that in mind.
Equatorial
Describes lines out of latitudes where daylength hardly varies across the year, which means where the plant never develop a sharp response to changing days. Such plants frequently flower slowly under a standard twelve-hour light cycle, since twelve hours is, to them, a mild ordinary day and not a signal.
The practical fix, handed down between sativa growers for decades, is to shorten the light further: eleven hours, sometimes ten, especially in the final weeks. It costs a little yield and buys a more clearer end. A listing that says “equatorial” is telling you this with one word, and a grower that takes it as a note on geography has missed the instruction hidden in it.
Terpinolene
A aromatic compound found in large amounts in many old sativa lines and accounting for much of what growers mean as the “sativa” smell: green, woody, lemon and faintly floral at once. It is volatile, driven off easily by hot drying, and terpinolene fades more quickly in the cure than the earthier terpenes which lead most tent lines.
To a seed buyer the name does two things. Where a listing names terpinolene as the lead terpene, the line probably has substantial Haze-era genetics regardless of what the percentage claims. And when the grower wants that profile to survive to the jar, the cure is going to be cool and cool; a warm dry flattens a terpinolene sativa to a flower that tastes of very little and nothing of what the pack described.
