Every quality that sells an indica seed was bred there by a range of mountains. The short stature, the seven-to-nine-week flowering, the hard resinous flowers, the wide blue-green leaf, the colour that comes in as the nights go cold: not one of these is a breeder’s design. They are the answers a plant found over many thousands of years to a particular combination of problems, at great altitude, in a brief dry summer, on the slopes of the Hindu Kush and the ranges beyond it. Breeders took that answer down the mountain and refined it, but the shape of the plant is to this day the logic of the place. The lines referred to below come from the range at https://kushindicaseeds.com whose catalogue traces to Afghanistan, northern Pakistan and the Indian Himalaya; the argument itself applies for any true indica out of any shop catalogue. Knowing the terrain turns out to be the most reliable way to understand the pack.
A Dry Corner of Central Asia
The Hindu Kush runs for about eight hundred kilometres out of the middle of Afghanistan towards northern Pakistan, and the broader indica zone extending over into the western Himalaya on one side and the lowlands of the Central Asian plateau on the other. Cannabis has been cultivated there for a very long time, mainly for hashish, which means selected generation by generation by people who needed resin above any other quality else: resin that could be rubbed and pressed off a plant that would have ripened ahead of the autumn snow.
This is a different history from the one that shaped the tropical sativas, where seasons barely change and the plant could flower for half a year. Everything that comes below is the outcome of four conditions about the terrain: it is high, it is dry, the summer is short, and the nights go cold early. The sequence that they are taken below hardly matters; a plant experiences all of them at season.
Seven Weeks Before the Snow
Above two thousand metres the growing window is brief, and the autumn comes quickly and decisively. A plant which needed fourteen weeks to ripen from the days started to draw in did not set seed in that terrain, and the genes dropped out of the population. What remained reacts sharply to shortening days and ripens in roughly seven to nine weeks after the cue.
Indoors that reflex is the one most cited indica trait. Flip to twelve hours and the plant moves at once, grows over a fortnight and stacks flower over the remainder of a short run. The fastest strains at Kush Indica Seeds finish at about 7 weeks after the flip, and that allows five or six cycles a year out of one space where a classic sativa gives two. This difference is not efficiency on the breeder’s side; it is the snowline encoded into the plant’s clock.
The Colour of a Cold Valley
Mountain nights fall below ten degrees weeks before the days do, and a good number of indica lines react to that cold by making anthocyanin, the same compound that turns a maple leaf purple. On the plant it appears as purple in the calyxes, leaves and occasionally the stem, and it does little for the grower beyond looking beautiful.
The point to take from the colour is genetic, not decorative. The tendency to colour is carried out of specific high-altitude stock, and a strain that colours every time with a cold last two weeks carries the ancestry whatever the name claims. Lines marketed as “purple” that only turn under extreme cold, or not at all, usually carry a colour in only the name and in the plant. Chilling the room during the last weeks brings the colour forward where it exists and achieves nothing at all if it is absent; it at the same time slows the finish, so it is a bargain rather than a costless effect.
The Low Frame
A good deal of the old growing land lies between fifteen hundred and three thousand metres. Up that height the air is thin, the ultraviolet exposure is heavy, the wind is relentless and each centimetre of stem above the ground costs resources the plant cannot spare. A tall plant on that ground loses faster, snaps more and gains little for its height, because there is no canopy it needs to clear.
The population which persisted is low: tight internodes, a single dense central stem, branches kept close, frequently broader than it is tall. In a tent that carries over straight: a true indica line stretches perhaps half its height again through flower where a sativa doubles, fits beneath a light with a modest gap and seldom needs tying at all. Anyone short on limited height buy indica for precisely this reason, and it is the mountain, not the breeder, that those growers are relying on.
Resin as Sunscreen and Sealant
The old zone is arid: low humidity, hard sun, rare rainfall in the flowering summer. A plant in such a place has two problems which its resin answers at once. It needs to shield its flowering parts from UV light, and it needs to hold water in the flower through weeks of dry wind. A heavy coat of trichomes does both: their heads absorb the ultraviolet and their coating slows water loss. Selection for hashish then pushed the trait further, since resin was the crop.
Dense flower form belongs to the same cause: a tightly clustered bud loses less water than an airy one in dry air. In a tent those two traits arrive together, and just one of them is always an advantage. The resin is. The density becomes a liability the moment the air is damp: a bud shaped to retain water in a desert holds it just as well in a wet room, and botrytis spreads through a hard indica cola faster than through anything an equator has ever produced. The trait that sells the seed is the same trait that needs a drier room during the final few weeks.
Leaves for a Thin Atmosphere
The indica leaf is broad, thick and a deep green, with only a few wide lobes whereas a sativa leaf has more narrow ones. Two pressures about the terrain favour the broad shape. Thin air and hard sun mean an heavy photon dose per square centimetre, so a wide leaf catches enough without needing much surface; a big narrow-fingered leaf would just scorch. And steady wind tears thin foliage, whereas a stout, short-stalked leaf stays put.
The deep colour is pigment packed densely in a thick leaf, and part of the same answer. For the tent the leaves count in one practical respect: a broad-leafed indica canopy blocks light from all growth below the top layer much more completely than a sativa’s, so lower flowers on an unmanaged indica finish in small and weak. Growers who remove a few large leaves in week three are reversing, carefully, what the mountain put there over thousands of years.
Reading the Place Names
The great majority of indica pack names are place names or derive from them, and the places are more informative than most buyers look. “Afghani” generally refers to a population out of the Mazar-i-Sharif of Afghanistan, and a typical short, resinous, early-finishing type. “Hindu Kush” in a name points to the central mountains proper and often to material taken on the Pakistani side. “Chitral” and “Mazar” point to specific valleys with their own local forms, the former often colouring and the latter large and slower for an indica. Kush Indica Seeds gives the collection region on every line whenever it is documented, which makes the name a flavour to a fact the grower can use.
Most indica seed on sale are worked stock many generations from the original collection, selected for consistency and not for the variation of a true landrace carries; a buyer that is after the population itself has to shop for packs described as pure landrace stock and expect the surprises which come with the label.
Where the Adaptations Turn Against You
Every adaptation described above was a answer to the condition that a tent does not impose, and a trait that has lost its problem behaves one of two things: it becomes a cost-free advantage or it becomes a hazard. The speed and the low stature are bonuses, because no condition in a room punishes them. The density and the heavy leaf become hazards, since the arid wind that made sense of them is absent and the still atmosphere of a closed room has exactly the reverse influence.
That is why the indica grow succeeds or fails in one factor more than any other: humidity during the final three weeks. A person who holds it low gets the dense, resinous, early harvest the mountain bred; one that does not gets rot inside the thickest colas, which is the the plant was trying hardest to hold water in. In a room, the mountain is to be rebuilt for the last two weeks: cool, dry, moving air. All that remains about running indica is easy exactly since the population was bred for somewhere much harder.
The Drift of a Word
The word that gave the mountains its name has travelled a long way from it than any term in cannabis. “Kush” in a current seed listing may refer to an unselected Hindu Kush landrace, a Californian Coast hybrid carrying one Kush grandparent, or a strain called Kush because the seller thought the sound would sell. The famous OG Kush line, which accounts for most of the appearances of the word today, is most likely more sativa-leaning than many of the stock it takes the word from, and its growth habit, finishing time and leaf shape show as much.
A practical reading is the same one that holds across this page: look past the word and go back to the terrain. A listing which gives an low stretch, a flowering time below nine weeks, a dense bud and a wide leaf is selling a mountain plant whatever it is named; one that states a tall habit, eleven weeks and open buds is selling something else with a borrowed name. The seed carries where it was shaped by; the name frequently does not.
