Decoding Sativa Seed Packs: A Glossary

Sativa seeds come with more vocabulary attached than any other kind of cannabis seed, and a good deal of it says a certain thing to a botanist, another to a seed company and a third to the grower standing in front of the pack. A disappointing sativa grow nearly always traces back to a word that was understood in the wrong one of those senses: a flowering time read as a fixed number, a “sativa-dominant” tag read as a description of effect, a landrace bought like it were a modern hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand as the concrete examples, because it runs heavily towards the classic end of the spectrum and that is where the words carry the most weight most; the meanings themselves hold to any sativa seed from any shop. They are in no special order, because none of them is usable on its own without the rest.

Haze (the family, not the smell)

In its first sense a particular family of plants bred in coastal California from Mexican, Thai and South Indian parents, and later preserved and worked in the Netherlands. The Haze runs tall, fills out openly, takes for twelve to sixteen weeks and carries a scent of spice, pine and a note metallic that no other line exactly has.

In its looser sense “Haze” is whatever hybrid which contains some of that family, which today is most of the sativa-leaning catalogue. A listing that says “Haze” without lineage could be mostly percent original old family or one sixteenth of it, and the grow time tracks the share, not the name. The useful question is never “is it a Haze” but “how much, and through which parent”.

Flowering time (and what it is counted from)

The number of weeks between the start of flowering and harvest, which is the single most frequently misunderstood number on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, not from germination, so a “fourteen-week” sativa grown with an eight-week vegetative stage is a five-month plant. Seed companies additionally give the optimistic end of the spread, because the longer end sells less seed.

Sativa plants take everywhere from ten weeks to more than twenty, and the slowest strain in the Haze Sativa Seeds range comes in at about 16 weeks from the flip. The catalogue can be sorted by that number, which is the reasonable first step for a room with a fixed timetable. A grower who allows four weeks on top of the figure the pack states is rarely disappointed.

Foxtailing (and when it is not a fault)

The tendency of some flowers to push out fresh calyx clusters on top of old ones, giving spired, irregular buds instead of dense ones. In the majority of tent-bred strains it is a heat symptom, typically from light that is too close or a room that is too high, and the advice is to fix the room.

In a good number of sativas, above all Thai and certain Haze lines, it is genetic and is going to happen in a flawless room. A new sativa grower often wastes a month chasing a fault that is a problem, lowering lights and heat only delaying a long flower further. The breeder rarely says which kind to expect; the parentage usually tells you.

Equatorial (the twelve-hour problem)

Describes lines out of latitudes in which daylength barely varies through the year, which means where the plant does not evolved a strong response to changing days. These lines frequently start flowering reluctantly under a conventional twelve-hour schedule, since twelve hours is, to them, a mild ordinary day and not a signal.

The working fix, passed down between sativa growers for decades, is to cut the light more: eleven hours, occasionally ten, particularly in the last weeks. It loses some yield yield and gains an more decisive finish. A listing that uses “equatorial” is warning you this with one word, and a grower that reads it as mere origin has missed the instruction hidden in it.

Landrace versus heirloom

A population of plants adapted through centuries to a particular region by the local climate and growers together, and not by deliberate selection. Thai, Thai, Malawian and Oaxacan lines are the classic sativa examples. A landrace is a spread, not a one plant: within a pack the flowering times, flowering times and aromas range widely than in a tent-bred hybrid, and this variation is the whole value of keeping one.

The mistake is treating a landrace as a finished hybrid. It carries traits that make sense in an equatorial field, such as a frame no tent can hold and a flowering clock tuned to a equatorial daylength the majority of growers cannot provide. “Heirloom” in a listing usually refers to a landrace that has been grown out away from its origin for some generations, often with light selection towards tent life; it is nearer to manageable but still not a hybrid. A seller listing “landrace” that does not give an collection region and a generation count is applying the word loosely, and the pack should be priced with that in mind.

Sativa-dominant

The marketing category rather than a botanical one. The phrase generally indicates that more of a hybrid’s lineage are classed as sativa by the breeder who drafted the description, which sometimes signals nothing more than that the flowers are airier or the smell brighter than the that breeder’s indica-labelled lines.

The effect people connect with a word, clear-headed rather than sedating, is driven far more by terpene profile and by cannabinoid content than it is by ancestry, and a good number of “sativa-dominant” releases produce a heavy couch effect while a good number of the opposite lines deliver exactly the opposite. To a buyer the label is useful as a loose guide to growth habit, flowering time and stretch; as a predictor to how it feels it is close to worthless without the aroma notes.

Terpinolene

A aromatic compound found in high proportion in many old sativa strains and accounting for most of what growers mean as the “sativa” aroma: fresh, woody, lemon and slightly floral at once. It is volatile, lost quickly by hot drying, and terpinolene degrades faster in the cure than the heavier terpenes that lead indica-leaning lines.

To a seed buyer the name earns two things. When a listing lists terpinolene as the leading terpene, the line probably carries real old-sativa genetics whatever the label claims. And where the grower wants that smell to still be there to the jar, the cure has to be slow and slow; a fast drying room flattens a terpinolene sativa into a flower that smells of very little and nothing of what the pack promised.

Hermaphroditism in long-flowering lines

The appearance 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 some tendency to do; sativa lines show it more, for one plain reason: fourteen weeks of flower is sixteen weeks of opportunity for a timer leak, a temperature spike or a late watering to set it going, and an plant that has already waited past its intended end frequently produces a few late pollen sacs on its own in a final attempt to set seed.

None of this makes a sativa line unstable by nature; it makes the grower’s discipline matter over longer. A sealed room, stable conditions and cutting the moment the plant is ready rather than a week later remove the greater part of the problem. A listing which states the breeder tests parents for hermaphrodite traits is worth worth hearing for a sativa than for anything other category.

Latitude (outdoor sativas)

The one figure that decides whether a sativa can finish outdoors, and a number no pack prints. Equatorial lines need the autumn days to go on late enough for the plant to ripen; at northern latitudes the frost arrives before that, and the grower harvests an half-finished plant in late October or else watches it rot in November. The closer to the equator, within the northern hemisphere, the longer the season stretches, and Mediterranean and low-latitude growers can finish plants that northern growers never will.

The usable reading for a seed listing: an “outdoor” sativa finishing month is stated for the breeder’s home latitude, normally somewhere within southern Europe or the western United States, and each degree north of that moves the date later into the frost. A grower above roughly the fiftieth parallel that wants a long-flowering sativa in the garden needs to be shopping for an autoflower or else a greenhouse, not a better season.