Every trait that sells an indica seed has been bred there by a range of mountains. The short stature, the seven-to-nine-week flowering, the dense resinous buds, the broad dark leaf, the purple that appears as the nights turn cold: not one of these is a breeder’s design. They are the solutions a plant found over many thousands of years to a particular set of problems, at high altitude, in a short dry season, across the slopes of the Hindu Kush and the mountains around it. Modern breeding carried that answer down the mountain and refined it, but the logic of the plant is to this day the logic of the place. The lines pointed to in what follows are drawn from the range at https://kushindicaseeds.com whose catalogue traces to Afghanistan, northern Pakistan and the Indian Himalaya; the argument though holds for any true indica out of any shop bank. Knowing the terrain is the quickest way to read the pack.
The Range
The Hindu Kush runs roughly eight hundred kilometres from central Afghanistan into northern Pakistan, and the wider indica homeland spilling across into the Indian Himalaya to one side and the deserts around the Central Asian interior on the other. The plant has been cultivated there for centuries, chiefly for hashish, which means chosen generation by year by farmers who wanted a plant above anything else: something that could be sieved and sieved off a plant that would have ripened ahead of the first frost.
This is a separate selection to the one that shaped the tropical sativas, in which seasons hardly change and the plant could flower for most of a year. All that comes below is the consequence of a handful of facts about the place: it is high, it is dry, the summer is short, and the nights turn cold fast. The order that they are discussed below hardly matter; a plant experiences all of them in the same season.
The Low Frame
A good deal of the traditional growing land sits from fifteen hundred and three thousand thousand metres. At that height the air is thin, the ultraviolet exposure is intense, the wind is constant and each centimetre of stem above the soil takes resources the plant can ill spare. A tall plant in such ground dries out more, breaks more and gets nothing for its extra height, because there is no canopy to outgrow.
The population which survived is low: tight internodes, a single thick central stem, branches kept close, frequently wider than it is tall. In a tent that translates straight: a true indica line stretches perhaps half its height again in flower where a sativa doubles, fits beneath a light at a modest modest distance and seldom requires training at all. Growers with limited height choose indica for precisely this reason, and it is the mountain, not the breeder, that those growers are thanking.
Built for a Desert Autumn
The traditional homeland is dry: low humidity, hard sun, rare rain in the late season. A plant there has two pressures that resin solves at once. It must shield its flowering tissue from ultraviolet light, and it must keep moisture in the bud through a long stretch of desiccating wind. Trichomes do both: their heads block the ultraviolet and the waxy layer reduces moisture loss. Farmers for hashish on top of that pushed the trait even harder, because resin was always the crop.
Dense bud form goes with the same story: a tightly packed bud gives up less water than an airy one in arid air. Inside a tent those same traits come together, but just one of them is always welcome. The resin is. The density becomes a liability the moment the room is humid: a bud shaped to retain water in a desert retains it equally as well in a wet tent, and botrytis moves in a dense indica cola faster than through anything the equator has ever made. The trait that sells the seed is the same trait that needs a dehumidifier in the last three weeks.
Seven Weeks Before the Snow
Above two thousand metres the growing window is short, and the autumn arrives quickly and comes hard. A plant that needed fourteen weeks to ripen from the days started to shorten never make seed on that terrain, and the genes dropped out of the population. The plant that remained responds fast to shortening days and ripens in roughly seven to nine weeks from the signal.
In a tent that reflex is the one most frequently valued indica trait. Switch to twelve hours and the plant moves immediately, grows over a fortnight and fills flower over the remainder of a short cycle. The quickest strains at Kush Indica Seeds finish in about 7 weeks after the flip, which permits as many as five or six harvests a year from one space where a classic sativa allows two. This difference is no cleverness on the breeder’s side; it is the first snow written into the plant’s calendar.
Cold Nights: Why Some Go Purple
Mountain nights drop below ten degrees long before the days follow, and a good number of indica populations react to that chill by making anthocyanin, the same compound that colours a maple leaf purple. On the plant it shows as purple in the bracts, fan leaves and occasionally the stem, which it does little for the smoker beyond look striking.
The thing worth taking from it is genetic, rather than cosmetic. The capacity to colour is inherited out of particular cold-valley stock, and a strain that colours reliably in a cool final fortnight carries that origin regardless of what the label claims. Strains sold as “purple” that will only turn under heavy cold, or not at all, usually carry a word in the name and in the plant. Chilling the room during the last weeks draws the colour forward if it is present and achieves nothing at all if it is absent; it at the same time slows ripening, so it is a bargain and not a free trick.
Leaves for a Thin Atmosphere
An indica fan leaf is wide, thick and dark, with only a few wide fingers whereas a sativa fan leaf carries more narrow ones. Both things in the terrain favour the broad form. High-altitude air and hard sun mean a high photon load on each square centimetre, and a wide leaf gathers plenty and does not need much area; a big narrow-fingered leaf in that light simply burn. And constant wind tears thin foliage, while a stout, short-petioled leaf holds.
The deep colour is chlorophyll packed thickly in a thick leaf, and one part of the same adaptation. To the tent these features count in a single everyday respect: a broad-leafed indica canopy shades all growth beneath the top tier much more thoroughly than a sativa’s, so lower buds of an unmanaged indica come in airy and weak. People who strip a fan leaves in mid-flower are undoing, carefully, something the range put there over thousands of years.
Reading the Place Names
Most indica seed names carry the names of names or derive from one, and the places are more useful than most buyers look. “Afghani” usually means stock out of the Mazar-i-Sharif region, and the classic short, resinous, fast-finishing type. “Hindu Kush” in a name refers to the central mountains proper and frequently to stock taken on the Pakistani side. “Chitral” or “Mazar” point to specific valleys with their own local types, the former frequently purpling and the latter heavy and late for an indica. Kush Indica Seeds gives the origin area for every pack where it is known, which makes the name from a flavour to a fact the grower can use.
Most indica packs on sale are hybrid material many generations removed from the valley, bred for consistency and not to preserve the variation of a pure landrace carries; a buyer who wants the spread has to look for packs described as unselected landrace stock and accept the surprises which come with them.
Taking the Plant Off the Mountain
Each trait discussed above was a solution to a condition that a tent no longer impose, and any trait that has lost its problem behaves one of two things: it becomes a cost-free bonus or it turns into a cost. The speed and the short frame become advantages, since no condition in a tent penalises a plant for them. The density and the broad leaf are costs, because the dry air that made sense of them is absent and the damp air of a closed room does precisely the opposite influence.
This is why the indica grow goes well or goes wrong in a single factor far more than any other: humidity during the final three weeks. A grower who holds it low is rewarded with the dense, frosted, early harvest the mountain bred; one that lets it rise is punished with mould inside the thickest colas, where exactly where the mountain was arranged the plant to keep water in. Indoors, the mountain has to be rebuilt for the last two weeks: cool, dry, with moving air. All that remains about running indica is forgiving exactly because the plant was bred for a place much harder.
What “Kush” Means Now
The word that gave the range its name has travelled a long way from it than almost any other in cannabis. “Kush” in a current seed listing may refer to a true Hindu Kush landrace, a West Coast hybrid with one Kush grandparent, or a strain called Kush since the breeder thought the sound of it. A OG Kush family, and this accounts for most of the appearances of the word today, is most likely more sativa-leaning than many of the plants it borrows the word from, and its stretch, flowering time and leaf shape show as much.
A practical rule is the one that applies across this article: ignore the word and read the terrain. A listing that states a low stretch, a finishing time below nine weeks, a hard flower and a wide leaf is describing a mountain plant regardless of what it is named; one that states a lanky frame, eleven weeks and open buds is selling a plant from somewhere else with a borrowed name. The seed remembers where it came from; the label frequently does not.
