Sativa seeds arrive with more vocabulary attached than any other category of cannabis seed, and most of it says a certain thing to a botanist, another to a seed company and something different again to the grower standing in front of the listing. The failed sativa grow usually goes 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” label read as a statement of character, a landrace bought like it were a modern hybrid. The entries below were put together with the range at https://hazesativaseeds.com open as the concrete examples, since it runs strongly towards the classic end of the category where the vocabulary carry the most weight most; the definitions though hold to any sativa seed from any shop. They are in no particular order, because not one of them is sense on its own without the rest.
Terpinolene
A aromatic compound found in high amounts in a lot of old sativa lines and responsible for much of what people mean as the “sativa” aroma: green, piney, citrus and faintly sweet at once. It is volatile, driven off easily by fast drying, and terpinolene fades more quickly during storage than the earthier terpenes which lead most tent lines.
To a seed buyer the word does two jobs. Where a listing names terpinolene as the lead aromas, the strain most likely carries real Haze-era genetics whatever the label says. And where the grower are after that profile to survive by the jar, the drying has to be cool and slow; a fast dry flattens a terpinolene line to something that tastes of hay and nothing of what the pack promised.
Latitude (outdoor sativas)
The single number that determines if a sativa can ripen outdoors, and one that no pack states. Equatorial lines need the autumn days to go on late enough for the plant to finish; in high latitudes the frost comes before that, and the grower harvests an unripe plant in the end of October or else watches it rot in November. The closer south, in the northern hemisphere, the later the window runs, and Mediterranean or subtropical gardens are able to finish plants that temperate gardens never will.
The practical reading for a seed pack: an “outdoor” sativa finishing month is given for the breeder’s own latitude, normally somewhere in temperate Europe or the west coast of the United States, and every step north of that pushes the date back towards the weather. A grower north of roughly the fiftieth parallel who is after a long-flowering sativa outdoors needs to be looking for a sativa autoflower or else a greenhouse, and not a better season.
Haze (the family, not the smell)
Originally a specific line of plants bred in 1970s California from Mexican, Thai and South Indian landraces, and then kept and refined in the Netherlands. A true Haze grows tall, branches sparsely, flowers for twelve to to sixteen weeks and smells of spice, citrus and a note metallic that no other other line quite has.
In its second sense “Haze” is whatever cross that carries some of that family, which today is a great many of the sativa-leaning market. A listing which reads “Haze” and gives no lineage may be mostly percent original old family or a small fraction of it, and the flowering time follows the share, not the name. The working question is never “is it a Haze” but “how much, and through which parent”.
Hermaphroditism in long-flowering lines
The production of male flowers on a female plant, usually towards the end in flower and often in response to stress. Every cannabis line carries a degree of tendency to it; sativa lines express it more, and the reason is one plain reason: fourteen weeks of flower is sixteen weeks of exposure for a timer leak, a temperature spike or a missed watering to trigger it going, and a old that has already gone past its natural finish often throws a few late male sacs on its own in a final attempt to set seed.
Not one of these makes a sativa strain weak by nature; it makes the grower’s discipline matter for longer. A sealed room, stable temperatures and harvesting the moment the plant is done and not a week later take away the greater part of the risk. A listing that mentions the breeder screens parents for intersex traits is saying something worth hearing on a long-flowering line than for any else.
Sativa-dominant
A catalogue term and not a measurable one. The phrase usually indicates that the larger share of a hybrid’s lineage are classed as sativa according to whoever drafted the description, and occasionally signals no more than that the flowers are airier or the aroma brighter than the same breeder’s indica-labelled lines.
The effect people connect with a word, lively rather than sedating, is driven more by terpene chemistry and the cannabinoid balance than by ancestry, and a good number of “sativa-dominant” releases deliver a heavy sleepy result and a good number of the opposite lines do exactly the reverse. To a grower the label is useful as a rough hint to growth habit, flowering time and stretch; for a guide to effect it is close to worthless without the aroma notes.
Stretch (the doubling)
The burst of vertical growth which comes after the switch to flowering. Indica-leaning plants add around half again; sativas commonly double, and a few equatorial lines triple. The stretch lasts two to five weeks and will not be halted after it begins, only bent sideways by training.
In tent terms, the stretch figure is a number to read before choosing when to flip. A sativa flipped at sixty centimetres in a standard tent is at the lamp before week four of flower; one flipped at thirty centimetres has room. People coming over from indica strains nearly always switch far too late the first time, and the consequence is visible on the ceiling of the tent.
Landrace
A population of plants shaped over generations to a particular place by local growers and growers together, rather than by deliberate selection. Colombian, Colombian, Congolese and Mexican stock are the sativa cases. A landrace is a spread, rather than a single plant: inside a pack the flowering times, finishing times and aromas spread far more than any tent-bred hybrid, and that variation is the point of keeping one.
The trap is treating a landrace as a finished hybrid. It brings habits that make sense in an equatorial field, such as height that no tent can hold and a flowering rhythm tuned to a equatorial daylength most growers never provide. “Heirloom” in a listing usually means a landrace that has been grown out somewhere for a number of generations, often with light selection towards tent conditions; it is nearer to usable but still far from uniform. A shop offering “landrace” that does not give an collection region and a generation count is applying the word loosely, and the seeds should be priced accordingly.
Flowering time
The figure of weeks from the onset of flowering and harvest, and the one most frequently misunderstood figure on a sativa pack. For photoperiod seed it is counted from the day the light drops to twelve hours, not from germination, so a “fourteen-week” sativa started after a eight-week vegetative stage is a five-month plant. Seed companies also quote the optimistic end of the spread, because the longer end moves less seed.
Long-flowering lines run anywhere from ten weeks to more than twenty, and the longest line in the Haze Sativa Seeds range comes in at about 16 weeks after the switch. The catalogue can be sorted by that number, which is a sensible first pass for a room on a tight timetable. A grower who allows four weeks on top of whatever the pack states is rarely caught out.
Equatorial
Refers to lines out of regions in which daylength hardly varies across the year, which means where the plant does not develop a sharp response to changing days. These lines often start flowering reluctantly at a standard twelve-hour schedule, because twelve hours is, for them, an ordinary day and not a signal.
The working response, passed down between sativa growers over decades, is to cut the light more: eleven hours, sometimes ten, particularly during the final weeks. It loses some little yield and buys an earlier decisive finish. A listing that says “equatorial” is telling you about this in one word, and a grower who reads it as mere geography has missed the point inside it.
