Decoding Sativa Seed Packs: A Glossary
Sativa seeds come with more vocabulary around them than any other category of cannabis seed, and a good deal of it says a certain thing to a botanist, something else to a breeder and something different again to the person trying to make a decision in front of the pack. The failed sativa grow nearly always traces back to a word that was read in the wrong one of those senses: a flowering time taken as a fixed number, a “sativa-dominant” tag read as a statement of effect, a landrace chosen as if it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com open for reference, since it leans strongly to the long-flowering end of the category and that is where the words carry the most weight most; the definitions themselves hold to any sativa seed from any seller. They are in no special order, since not one of them makes usable without the rest.
Stretch
The burst of upward growth that follows the switch to flowering. Most tent-bred plants add around half again; sativas commonly double, and some landrace lines triple. The stretch continues three to four weeks and will not be stopped after it begins, merely bent sideways by training.
In tent terms, a stretch multiplier is a number worth reading before deciding when to switch. A sativa switched at sixty centimetres inside a two-metre tent is touching the lamp before week four of flower; one flipped at thirty centimetres centimetres has room. Growers moving from indica stock nearly always flip far too late the first time, and the consequence is written on the ceiling of the tent.
Landrace
A population of plants shaped through centuries to a particular region by the local climate and growers alike, and not by modern breeding. Colombian, Thai, Congolese and Oaxacan lines are the classic sativa cases. A landrace is a spread, not a one plant: inside a pack the heights, finishing times and smells range widely than in a tent-bred line, and that variation is the whole value of keeping one.
The trap is buying a landrace as a modern hybrid. It carries traits that made sense in an open field, such as height that no tent can contain and a flowering rhythm tuned to a daylength the majority of growers cannot offer. “Heirloom” on a listing generally refers to a landrace that has been grown out somewhere over some generations, often with light selection towards indoor conditions; it is closer to usable but still far from uniform. A seller listing “landrace” that does not give an collection region and a generation history is applying the word loosely, and the pack should be priced with that in mind.
Haze (the family, not the smell)
In its first sense a specific line of plants put together in 1970s California from Mexican, Thai and South Indian parents, and then preserved and worked in the Netherlands. A true Haze runs tall, fills out sparsely, flowers for twelve to sixteen weeks and smells of spice, pine and a note sharp that no other line exactly has.
In its looser sense “Haze” is whatever cross which carries some of that family, which by now is most of the sativa-leaning catalogue. A listing which says “Haze” without lineage could be eighty percent the classic family or a sixteenth of it, and the grow character tracks the share, not the name. The working question is not “is it a Haze” but “how much, and via which parent”.
Terpinolene
A terpene found in high amounts in a lot of old sativa lines and responsible for most of the thing growers mean as the “sativa” aroma: green, piney, lemon and faintly sweet all at once. It is volatile, lost quickly by fast drying, and it degrades more quickly during the cure than the earthier terpenes which lead most tent stock.
To a seed buyer the word earns two things. Where a listing lists terpinolene as the leading terpene, the line probably carries real Haze-era genetics whatever the label says. And when the grower are after that profile to survive by the jar, the cure has to be cool and slow; a warm drying room flattens a terpinolene line into a flower that smells of very little and leaves nothing of what the pack promised.
Intersex tendency
The production of pollen-bearing flowers on a female plant, typically towards the end in flower and often in response to stress. Almost every cannabis population carries a degree of capacity to it; sativa plants show it more often, and the reason is one plain reason: sixteen weeks of flower is fourteen weeks of exposure for a timer leak, a temperature spike or a missed watering that can set it off, and a plant plant has already gone beyond its natural finish often throws a few desperate male sacs on its own in a last effort to make seed.
None of this makes a sativa line unstable as a matter of nature; it means the grower’s discipline matter over a longer stretch. A sealed tents, steady temperatures and cutting when the plant is done and not two weeks later remove the greater part of the risk. A listing which mentions the breeder tests parents for hermaphrodite traits is saying something worth hearing for a sativa than for anything else.
Foxtailing (and when it is not a fault)
The tendency of some flowers to grow new bud clusters on top of old ones, giving towered, irregular buds rather than round ones. In most tent-bred strains it is a heat response, usually from light too close or a room that is too high, and the advice is to fix the room.
In a good number of sativas, especially Thai and certain Haze lines, it is genetic and is going to happen under a flawless room. A new sativa grower frequently wastes weeks hunting a fault that was never not there, dropping lights and heat and delaying an already slow flower further. The breeder seldom says which type to expect; the parentage generally does.
Sativa-dominant (the label)
The catalogue category and not a botanical one. The phrase generally indicates that the larger share of a hybrid’s parents were classed as sativa by the breeder who drafted the description, and occasionally signals nothing more than a certain the flowers are longer or the aroma brighter than the same breeder’s indica-labelled lines.
The effect people connect with the word, lively instead of sedating, is driven more by terpene profile and by cannabinoid balance than it is by ancestry, and a good number of “sativa-dominant” releases deliver a heavy couch effect while plenty of indica-labelled lines deliver the opposite. For a buyer the percentage is worth something for a rough hint to growth habit, flowering time and stretch; for a guide to how it feels it is close to worthless without the terpene description.
Equatorial
Describes plants from latitudes in which daylength barely changes through the year, which means that the plant does not develop a strong reaction to changing days. These lines often start flowering slowly at a standard twelve-hour light cycle, since twelve hours is, to them, a mild ordinary day and not a signal.
The practical fix, handed around among sativa growers for decades, is to cut the light more: eleven hours, sometimes ten, especially in the final weeks. It costs a yield yield and gains a more decisive finish. A listing that uses “equatorial” is telling you this with one word, and a grower who reads it as a note on geography has missed the instruction hidden in it.
Latitude (outdoor sativas)
The single figure that determines whether a sativa will ripen outdoors, and one no pack prints. Equatorial plants need the run of shortening days to go on late enough to let the plant to ripen; at high latitudes the frost comes first, and the grower harvests an half-finished plant in the end of October or else watches it rot in November. The further south, within a northern hemisphere, the longer the window stretches, and Mediterranean and low-latitude gardens can ripen plants that temperate gardens cannot.
The practical reading of a seed pack: an “outdoor” sativa harvest date is given for the breeder’s home latitude, usually a point within temperate Europe or the west coast of the United States, and every degree further north of that moves the date later into the frost. A grower above about the fiftieth parallel who wants a long-flowering sativa outdoors is looking for a sativa autoflower or else a covered space, and not a longer season.