Sativa seeds come with more jargon around them 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 something different again to the person standing in front of the listing. The disappointing sativa grow nearly always 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 taken as a statement of effect, a landrace chosen like it were a tent-bred hybrid. The entries below were put together with the range at https://hazesativaseeds.com to hand for reference, since it leans heavily to the classic end of the spectrum and that is where the words carry the most weight most; the meanings themselves apply to any sativa seed from any shop. They are in no special order, because none of them is usable without the rest.
Hermaphroditism in long-flowering lines
The appearance of male flowers on a female plant, typically towards the end in flower and often under stress. Every cannabis line carries some capacity for it; sativa lines express it more, and the reason is one plain reason: sixteen weeks of flower is fourteen weeks of opportunity for a timer leak, a heat spike or a missed watering to trigger it off, and an old that has waited past its natural finish frequently throws a few late male sacs on its own in a last attempt to set seed.
None of this makes a sativa strain weak as a matter of course; it makes the grower’s consistency count over longer. A sealed room, steady conditions and harvesting when the plant is ready rather than two weeks later remove the greater part of the problem. A listing that states the breeder screens parents for hermaphrodite traits is worth more on a long-flowering line than on any other category.
Flowering time (and what it is counted from)
The number 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 measured from the day the light drops to twelve hours, rather than from sowing, so a “fourteen-week” sativa grown after an eight-week vegetative period is a five-month plant. Seed companies also quote the optimistic end of a range, because the longer end sells fewer seed.
Long-flowering plants run everywhere from ten weeks to well over twenty, and the slowest strain in the Haze Sativa Seeds range comes in at around 16 weeks after the flip. The catalogue can be filtered by that number, which is a sensible first pass for a grower on a fixed schedule. A grower who allows four weeks to the figure the pack states is rarely caught out.
Foxtailing (and when it is not a fault)
The habit of certain flowers to grow new bud growth on top of existing ones, giving spired, irregular buds rather than dense ones. In most tent-bred strains it is a heat symptom, usually from light that is too close or temperatures too high, and the advice is to fix the room.
In a good number of sativas, especially Thai and some Haze lines, it is built in and is going to occur under a perfect room. A new sativa grower often wastes weeks chasing a problem that is a problem, dropping lights and heat only slowing an already long plant further. The listing seldom warns which type to expect; the lineage generally does.
Equatorial (the twelve-hour problem)
Refers to plants from regions where daylength hardly changes through the year, and that the plant never develop a sharp response to changing days. These lines often flower reluctantly under a standard twelve-hour schedule, because twelve hours is, to them, an ordinary day rather than a signal.
The working fix, passed down among sativa growers over decades, is to cut the light more: eleven hours, sometimes ten, especially in the last weeks. It loses a little yield and buys an more decisive end. A listing which uses “equatorial” is telling you about this with one word, and a grower that takes it as a note on geography has missed the point inside it.
Sativa-dominant (the label)
A catalogue category and not a botanical one. The phrase generally indicates that the larger share of a hybrid’s parents were described as sativa by the breeder who wrote the listing, and occasionally signals no more than that the buds are airier or the smell sharper than the same breeder’s other releases.
The effect people associate with the word, lively rather than sedating, is governed more by terpene chemistry and by cannabinoid content than by ancestry, and plenty of “sativa-dominant” releases produce a heavy couch effect while a good number of indica-labelled lines do the reverse. For a grower the label is worth something for a rough guide to growth habit, flowering time and stretch; for a predictor to effect it is next to worthless unless accompanied by the aroma description.
Latitude
The single figure that decides whether a sativa can ripen outdoors, and a number no pack prints. Equatorial lines need the autumn days to continue long enough for the plant to ripen; in high latitudes the frost arrives before that, and the grower harvests an unripe plant in the end of October or else watches it to mould in November. The closer south, in the northern hemisphere, the longer the window stretches, and Mediterranean and subtropical growers can finish lines that temperate gardens never will.
The usable reading of a seed pack: an “outdoor” sativa finishing month is given for the breeder’s home latitude, normally somewhere in southern Europe or the west coast of the United States, and every step further north of that moves the date back towards the frost. A grower north of about the fiftieth parallel that is after a long-flowering sativa in the garden is shopping for an autoflower or else a covered space, and not a longer summer.
Stretch
The surge of vertical growth that comes after the switch to flowering. Indica-leaning plants add half again; sativas routinely double, and some landrace types triple. The stretch lasts two to four weeks and cannot be halted once it has started, merely redirected by training.
In practical terms, the stretch multiplier is the fact to read ahead of deciding when to flip. A sativa switched at sixty centimetres inside a two-metre tent is at the lamp by week four of flower; one flipped at thirty centimetres has room. People coming from indica strains nearly always switch too late the first time, and the consequence is visible on the ceiling of the tent.
Landrace
A population of plants shaped through centuries to a particular region by the local growers and growers together, rather than by deliberate selection. Colombian, Colombian, Malawian and Oaxacan lines are the sativa examples. A landrace is a spread, not a single plant: inside a pack the flowering times, flowering times and aromas range widely than any tent-bred line, and that variation is the whole value of growing one.
The mistake is treating a landrace like a finished product. It brings habits that make sense in an open field, including a frame that no tent can hold and a flowering clock tuned to a daylength the majority of growers never provide. “Heirloom” in a listing generally refers to a landrace that has been reproduced away from its origin over some generations, often with a degree of selection towards indoor life; it is nearer to manageable but nonetheless not a hybrid. A seller listing “landrace” that does not give an collection region and a generation count is using the word loosely, and the pack should be priced accordingly.
Terpinolene (the “sativa smell”)
A terpene found in large amounts in a lot of old sativa lines and accounting for much of the thing growers mean as a “sativa” aroma: green, piney, lemon and slightly sweet at once. It is fragile, driven off quickly through fast drying, and terpinolene fades faster in the cure than the heavier terpenes which dominate most tent stock.
To a seed buyer the name earns two jobs. When a listing lists terpinolene among the leading terpene, the strain most likely has real old-sativa ancestry whatever the label says. And where the grower wants that smell to still be there to the jar, the drying has to be cool and cool; a warm drying room flattens a terpinolene line into a flower that smells of hay and nothing of what the pack described.
Haze (the family, not the smell)
In its first sense a particular family of plants put together in 1970s California from Colombian, Colombian and South Indian landraces, and later kept and worked in the Netherlands. The Haze grows tall, branches sparsely, takes for twelve to to sixteen weeks and carries a scent of spice, pine and a note metallic that no other line quite has.
In its second sense “Haze” is whatever cross that carries a share of that family, which by now is a great many of the sativa-leaning market. A listing that says “Haze” and gives no lineage may be eighty percent the classic family or one small fraction of it, and the flowering time tracks the fraction, not the name. The useful question is never “is it a Haze” but “how much, and through which parent”.
