Sativa Seeds, One Term at a Time

Sativa seeds come with more vocabulary attached than any other category of cannabis seed, and a good deal of it means a certain thing to a botanist, something else to a breeder and something different again to the person standing in front of the pack. The disappointing sativa grow usually goes back to a word that was understood in the wrong sense: a flowering time read as a promise, a “sativa-dominant” label read as a statement of effect, a landrace bought like it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com open for reference, because it runs heavily to the classic end of the category and that is where the words carry the most weight most; the meanings themselves hold to any sativa seed from any shop. They are given in no particular order, because not one of them makes usable on its own without the rest.

Equatorial

Describes lines out of regions in which daylength hardly varies across the year, and that the plant does not evolved a strong reaction to changing days. These plants often start flowering reluctantly at a conventional twelve-hour schedule, since twelve hours is, to them, a mild ordinary day rather than a signal.

The practical fix, handed down between sativa growers for decades, is to cut the light further: eleven hours, occasionally ten, particularly in the final weeks. It costs some little yield and buys an earlier clearer finish. A listing that uses “equatorial” is warning you this in one word, and a grower who reads it as a note on geography has missed the instruction inside it.

Latitude

The one figure that determines if a sativa will ripen outdoors, and one no pack prints. Equatorial plants require the autumn days to continue long enough for the plant finish; at northern latitudes the frost comes first, and the grower harvests a unripe plant in late October or else loses it to mould in November. The further to the equator, in the northern hemisphere, the later the window runs, and coastal and low-latitude gardens are able to finish lines that temperate gardens cannot.

The practical rule for a seed pack: an “outdoor” sativa finishing month is given for the breeder’s own latitude, normally a point in temperate Europe or the west coast of the United States, and every degree further north of that pushes the finish back into the frost. A grower above roughly the fiftieth parallel who is after a true sativa in the garden needs to be looking for a sativa autoflower or a greenhouse, not a better summer.

Foxtailing

The tendency of certain flowers to push out new bud clusters on top of existing ones, giving spired, irregular buds instead of dense ones. In the majority of indica-leaning lines it is a heat response, usually from light too close or a room that is too high, and the advice is to correct the cause.

In many sativas, above all Southeast Asian and some Haze lines, it is built in and is going to happen in a perfect room. A new sativa grower frequently spends weeks hunting a fault that is not a problem, dropping lights and temperatures and slowing an already long flower further. The breeder seldom says which type to expect; the lineage generally does.

Landrace versus heirloom

A population of plants shaped over generations to a particular region by local growers and climate alike, rather than by deliberate breeding. Colombian, Thai, Congolese and Oaxacan lines are the classic sativa cases. A landrace is variable, not a single plant: inside a pack the heights, flowering times and aromas spread widely than in a tent-bred hybrid, and that variation is the whole value of growing one.

The trap is buying a landrace like a modern product. It brings traits that make sense in an open field, including height that no tent can contain and a flowering clock tuned to a equatorial daylength the majority of growers cannot provide. “Heirloom” on a listing generally means a landrace that has been grown out somewhere for some generations, often with a degree of selection towards indoor life; it is nearer to usable but nonetheless not a hybrid. A shop offering “landrace” that does not give a origin region and a generation count is applying the word as a flavour, and the seeds should be priced accordingly.

Flowering time (and what it is counted from)

The figure of weeks between the start of flowering and maturity, which is the single most misunderstood figure on a sativa pack. With photoperiod seed it is measured from the day the light is cut to twelve hours, rather than from sowing, so a “fourteen-week” sativa started after an eight-week vegetative period is a twenty-two-week plant. Breeders additionally give the optimistic end of the spread, since the other end moves less seed.

Long-flowering lines take everywhere from ten weeks to more than twenty, and the slowest strain in the Haze Sativa Seeds range is at around 16 weeks after the switch. The catalogue can be sorted by this number, which is the reasonable first step if you have a grower with a fixed schedule. A grower who adds four weeks to the figure the pack states is rarely disappointed.

Stretch

The burst of upward growth which follows the change to flowering. Indica-leaning plants add half again; sativas commonly double, and a few equatorial types go further. The stretch continues three to four weeks and cannot be halted after it begins, merely bent sideways by training.

In tent terms, a stretch multiplier is a number worth read ahead of deciding when to switch. A sativa switched at sixty centimetres centimetres in a standard tent is touching the lamp by week four of flower; one switched at thirty centimetres has room. Growers coming from indica strains almost always flip far too late the first time, and the consequence is written on the ceiling of the tent.

Haze (the family, not the smell)

In its first sense a specific line of plants bred in 1970s California from Mexican, Colombian and South Indian parents, and then kept and refined in the Netherlands. The Haze grows tall, fills out openly, flowers for twelve to to sixteen weeks and carries a scent of incense, citrus and something metallic that no line exactly reproduces.

In its looser sense “Haze” is any hybrid which carries a share of that family, which today is a great many of the sativa-leaning market. A listing which says “Haze” without parents could be mostly percent original classic 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”.

Terpinolene

A terpene present in large proportion in a lot of old sativa strains and responsible for most of what people mean as the “sativa” aroma: fresh, piney, lemon and slightly floral all at once. It is volatile, driven off easily through fast drying, and it fades more quickly during storage than the heavier terpenes which dominate indica-leaning lines.

For a seed buyer the word earns two jobs. Where a listing names terpinolene as the leading terpene, the line most likely carries substantial old-sativa ancestry regardless of what the percentage says. And when the grower wants that smell to survive to the jar, the cure has to be cool and cool; a fast dry turns a terpinolene line into a flower that tastes of very little and nothing of what the pack described.

Hermaphroditism in long-flowering lines

The production of male flowers on a female plant, usually late in flower and frequently in response to stress. Every cannabis line has a degree of capacity for do; sativa lines show it more often, and the reason is a plain one: sixteen weeks of flower is sixteen weeks of opportunity for a light leak, a temperature spike or a late watering to trigger it off, and an old that has already waited beyond its intended finish often throws a few desperate pollen sacs on its own as a last effort to set seed.

None of these makes a sativa strain weak as a matter of course; it makes the grower’s discipline count over a longer stretch. Light-tight tents, stable conditions and harvesting when the plant is ready rather than a weeks after remove the greater part of the problem. A listing that mentions a breeder screens parents for hermaphrodite traits is worth worth hearing on a long-flowering line than on anything other category.