Sativa seeds arrive 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 seed company and something different again to the person standing in front of the listing. The failed sativa grow nearly always traces back to a word that was understood in the wrong sense: a flowering time read as a fixed number, a „sativa-dominant“ label taken as a statement of effect, a landrace bought as if it were a tent-bred hybrid. The entries below are put together with the range at https://hazesativaseeds.com open for reference, because it leans strongly to the long-flowering end of the category where the vocabulary matter most; the definitions themselves apply to any sativa seed from any shop. They are in no particular order, because not one of them makes usable on its own without the rest.
Foxtailing
The habit of certain flowers to grow new calyx clusters on top of old ones, giving towered, irregular buds rather than round ones. In the majority of tent-bred strains it is a heat symptom, usually caused by 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, especially Southeast Asian and some Haze hybrids, it is genetic and will occur in a flawless room. A first-time sativa grower often wastes weeks chasing a problem that is not a problem, dropping lights and heat and slowing a long flower even more. The listing rarely warns which type you should expect; the parentage usually tells you.
Landrace versus heirloom
A population of plants adapted through centuries to a particular place by local growers and climate alike, and not by deliberate breeding. Thai, Colombian, Congolese and Mexican stock are the sativa examples. A landrace is variable, rather than a one plant: inside a pack the heights, flowering times and smells spread far more than in a tent-bred hybrid, and this spread is the whole value of growing one.
The trap is buying a landrace as a finished product. It brings habits that make sense in an equatorial field, such as a frame that no tent can contain and a flowering clock tuned to an daylength most growers cannot offer. „Heirloom“ in a listing generally means a landrace that has been reproduced somewhere over a number of generations, typically with light selection towards indoor life; it is closer to manageable but nonetheless far from a hybrid. A shop offering „landrace“ without a origin point and a reproduction history is applying the word loosely, and the seeds should be priced with that in mind.
Equatorial
Describes lines out of latitudes where daylength hardly changes through the year, which means that the plant does not develop a sharp reaction to shortening days. These lines often flower slowly under a conventional twelve-hour light cycle, because twelve hours is, to them, a mild ordinary day rather than a signal.
The practical fix, handed down between sativa growers over decades, is to cut the light further: eleven hours, sometimes ten, particularly in the final weeks. It costs a yield yield and buys a more clearer finish. A listing that says „equatorial“ is telling you about this in one word, and a grower that reads it as mere origin has missed the instruction hidden in it.
Sativa-dominant
The catalogue category rather than a botanical one. It usually means that the larger share of a hybrid’s parents were described as sativa by whoever wrote the description, and occasionally means nothing more than a certain the buds are airier or the aroma sharper than the same breeder’s other releases.
The effect people connect with a word, lively rather than sedating, is driven more by terpene profile and the THC balance than it is by ancestry, and a good number of „sativa-dominant“ hybrids deliver a flat sleepy result while a good number of indica-labelled stock deliver the reverse. For a grower the percentage is useful as a loose hint to growth habit, flowering time and stretch; as a guide to effect it is close to useless without the aroma notes.
Terpinolene (the „sativa smell“)
A terpene found in high proportion in many old sativa lines and accounting for much of the thing growers describe as the „sativa“ aroma: green, woody, lemon and slightly floral all at once. It is volatile, lost quickly through fast drying, and terpinolene degrades more quickly during storage than the heavier terpenes which lead most tent lines.
For a seed buyer the name does two things. Where a listing names terpinolene as the lead aromas, the line most likely carries real old-sativa ancestry regardless of what the label claims. And where the grower wants that profile to survive to the jar, the drying is going to be slow and slow; a warm dry flattens a terpinolene line into something that tastes of very little and no trace of what the pack described.
Latitude
The one number that determines if a sativa will ripen outdoors, and a number that no pack states. Long-flowering lines need a autumn days to continue long enough for the plant to ripen; in high latitudes the frost comes first, and the grower harvests an half-finished plant in the end of October or watches it rot in November. The further to the equator, within the northern hemisphere, the longer the season runs, and coastal and low-latitude growers can finish lines that northern gardens never will.
The usable rule for a seed listing: an „outdoor“ sativa finishing date is stated for the breeder’s home latitude, usually a point within southern Europe or the west coast of the United States, and each degree north of that moves the date later into the weather. 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 covered space, and not a better summer.
Flowering time
The number of weeks from the onset of flowering and maturity, and the single most misread figure on a sativa pack. With 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 a ordinary vegetative stage is a five-month plant. Seed companies also give the optimistic end of a range, because the other end moves fewer seed.
Long-flowering lines run anywhere from ten weeks to more than twenty, and the slowest line in the Haze Sativa Seeds range is at around 16 weeks from the switch. The catalogue can be sorted by that number, which is the reasonable first pass if you have a room on a fixed schedule. A grower who adds four weeks on top of whatever the pack states is rarely caught out.
Intersex tendency
The appearance of male flowers on a female plant, usually late in flower and often under stress. Almost every cannabis population has some capacity for it; long-flowering plants show it more, for one simple reason: sixteen weeks of flower is sixteen weeks of opportunity for a light leak, a heat spike or a missed watering to trigger it going, and a old plant has gone beyond its natural finish frequently throws a few late pollen sacs on its own in a last effort to set seed.
Not one of this makes a sativa strain unstable as a matter of nature; it makes the room’s discipline count for longer. A sealed tents, stable temperatures and harvesting when the plant is ready rather than two week later remove the greater part of the risk. A listing that mentions a breeder tests parents for hermaphrodite traits is saying something worth hearing on a long-flowering line than on anything other category.
Haze
Originally a specific line of plants put together in coastal California from Mexican, Colombian and Thai parents, and then kept and worked in the Netherlands. A true Haze runs tall, branches sparsely, takes for twelve to sixteen weeks and smells of spice, citrus and something metallic that no line quite has.
In its looser sense „Haze“ is any cross that carries a share of that family, which today is a great many of the sativa-leaning catalogue. A listing which says „Haze“ without lineage may be mostly percent the classic family or a sixteenth of it, and the grow character tracks the fraction, not the name. The useful question is never „is it a Haze“ but „how much, and through which parent“.