Every trait that moves an indica seed was bred there by a mountain. The squat frame, the seven-to-nine-week flowering, the hard frosted flowers, the broad dark leaf, the purple that appears as the nights turn cold: none of these is a breeder’s design. They are the solutions a plant found over thousands of years to a particular combination of problems, in high altitude, in a brief dry season, across the slopes of the Hindu Kush and the mountains beyond it. Modern breeding carried that answer off the mountain and polished it, but the shape of the plant is to this day the logic of the place. The lines referred to in what follows are drawn from the range at https://kushindicaseeds.com and its stock traces to Afghanistan, northern Pakistan and the Indian Himalaya; the argument though applies to any genuine indica out of any shop bank. Knowing the terrain is the quickest way to read the pack.
The Range
The Hindu Kush runs for about eight hundred kilometres from the middle of Afghanistan into northern Pakistan, and the wider indica zone spilling across to the western Himalaya to one side and the lowlands of the Central Asian interior on the other. Cannabis has been grown there over a very long time, chiefly for hashish, and chosen year after generation by people who needed resin above anything else: something that could be sieved or sieved from a plant that had ripened before the autumn snow.
This is a different history to the one that produced the equatorial sativas, where daylength hardly change and the plant could flower for most of a year. All that follows is a consequence of four facts about the place: it is high, it is dry, the growing season is short, and its nights go cold early. The sequence that they are discussed below hardly matter; a plant meets all of them in the same season.
The Fat Leaf
The indica leaf is broad, heavy and a deep green, and few broad lobes whereas a sativa fan leaf has more thin ones. Both things about the climate select for the broad form. High-altitude air and intense sun mean an high light dose on each square centimetre, and a broad leaf gathers plenty without much surface; a large narrow-fingered leaf in that light simply scorch. And constant wind shreds thin leaves, whereas a thick, short-petioled leaf holds.
The dark colour is pigment loaded densely into a thick leaf, and part of the same answer. To the tent the features count in one everyday respect: a broad-leafed indica canopy shades everything below the top tier much more completely than a sativa’s, which means the lower flowers on an untrained indica come in small and weak. People who strip a few fan leaves in mid-flower are reversing, carefully, something the mountain did for many thousands of years.
Built for a Desert Autumn
The old zone is arid: thin humidity, intense sun, little rainfall in the late season. A plant there has two problems which resin solves at once. It needs to protect its reproductive parts from UV light, and it needs to keep water in the flower through a long stretch of dry wind. Trichomes does both: their resin heads absorb UV and the waxy layer slows moisture loss. Farmers for hashish on top of that drove the trait further, because resin was always the crop.
Tight bud structure goes with the same cause: a closely packed bud loses less water than an open one in dry air. Inside a tent these same traits come as a pair, but only one of them is always welcome. The resin is. The density turns into a liability the moment the room is humid: a bud shaped to retain water in a desert holds it equally as well in a damp tent, and botrytis moves in a dense indica cola more quickly than through any flower an equator has ever made. The quality that sells the seed is the one that needs a drier room during the last few weeks.
Altitude: Why the Plant Is Short
A good deal of the old growing land lies from a thousand five hundred and three thousand metres. At that height the air is thin, the UV exposure is intense, the wind is constant and each centimetre of stem over the soil takes resources the plant cannot afford. A tall plant on that ground dries out faster, snaps sooner and gets little for the extra height, since there is no canopy it needs to outgrow.
The population that persisted is low: tight internodes, a single thick main stem, branches kept close, often wider than it is tall. In a tent that carries over straight: a pure indica line gains perhaps half its height over in flower where a sativa doubles, sits under a lamp at a modest short gap and seldom needs training down. Anyone with limited height choose indica for precisely this trait, and it is the mountain, not the breeder, that they are thanking.
The Short Season: Why It Flowers Fast
At two thousand metres the frost-free season is short, and the autumn arrives early and decisively. A plant that needed fourteen weeks to ripen after the days started to shorten never make seed on such terrain, so the genes left the population. What remained reacts sharply to the first shortening days and finishes in about seven to nine weeks after the cue.
Indoors that reflex is the one most frequently valued indica quality. Flip to twelve hours and the plant commits at once, grows over a fortnight and stacks flower over the remainder of a brief cycle. The quickest lines at Kush Indica Seeds come in at around 7 weeks from the switch, which allows five or six harvests a year out of one room whereas a long sativa gives two. This speed is no cleverness on the breeder’s side; it is the snowline written into the plant’s own clock.
Anthocyanin and the Autumn
High-valley nights drop under ten degrees long before the afternoons do, and many indica populations respond to that chill by producing anthocyanin, the same pigment that colours a maple leaf purple. On the plant it shows as purple through the calyxes, fan leaves and sometimes the stem, and it offers little for the smoker beyond look beautiful.
The thing to taking from the colour is genetic, rather than cosmetic. The capacity to colour is inherited from particular cold-valley stock, and a strain that colours reliably in a cold final two weeks has that ancestry whatever the label claims. Strains sold as “purple” that only turn under extreme cold, or not at all, typically have the colour in the name and in the genes. Chilling the room during the final weeks brings the colour out where it is present and does nothing if it is absent; it at the same time checks the finish, so it is a trade and not a free trick.
The Valley Names on the Pack
The great majority of indica pack names carry place places or descend from them, and the names are more useful than they realise. “Afghani” generally refers to a population out of the Mazar-i-Sharif region, and a classic squat, resinous, early-finishing type. “Hindu Kush” on a name points to the central mountains proper and frequently to material taken on the Pakistani side. “Chitral” or “Mazar” name specific valleys with their own local types, the former frequently colouring and the latter heavy and slower for an indica. Kush Indica Seeds lists the origin region on each pack whenever it is known, and that turns the name from from a flavour into a fact the grower can use.
Almost all indica seed on sale is worked stock several generations from the valley, bred for consistency and not for the spread of a true landrace carries; a buyer that is after the population itself needs to look for packs described as unselected reproductions and accept the surprises which come with them.
Where the Adaptations Turn Against You
Each adaptation described above was an answer to the condition that a tent does not present, and any solution that has lost its problem behaves either of two things: it turns into a free advantage or it turns into a hazard. The speed and the low stature are bonuses, since nothing in a tent punishes them. The density and the heavy leaf are hazards, because the arid air that made sense of them is absent and the damp atmosphere of a closed room does precisely the opposite influence.
That is why the indica cycle succeeds or goes wrong in a single factor far more than any other: humidity during the final few weeks. A person who holds it low is rewarded with the hard, resinous, fast harvest the mountain bred; one that lets it rise gets rot inside the best colas, which is the the plant was arranged the plant to hold moisture in. In a room, the mountain has to be reconstructed for the final two weeks: cool, dry, with moving air. Everything that remains about growing indica is forgiving exactly since the plant was selected for somewhere hard.
Kush on the Label
The word that lent the mountains its name has since moved a long way from it than any term in cannabis. “Kush” on a modern pack listing can refer to a true Hindu Kush landrace, a West Coast hybrid carrying one Afghan grandparent, or a line called Kush because the breeder liked the sound of it. A OG Kush line, which dominates the appearances of the word today, is probably as much sativa-leaning than many of the plants it takes the word from, while its stretch, flowering time and leaf say as much.
The usable reading is the same one which applies throughout this page: look past the word and go back to the terrain. A listing which gives a modest stretch, a flowering time below nine weeks, a dense flower and a wide leaf is describing a mountain plant whatever it is called; one that gives a lanky habit, eleven weeks and airy buds is selling a plant from else with a mountain name. The seed carries where it was shaped by; the name often does not.