Every trait that moves an indica seed was put there by a mountain. The squat frame, the seven-to-nine-week flowering, the hard resinous buds, the broad dark leaf, the colour that appears as the nights turn cold: not one of them is a breeder’s design. They are the answers a plant arrived at through thousands of years to a specific set of pressures, in high altitude, in a brief dry, cold summer, on the valleys of the Hindu Kush and the ranges around it. Breeders took that solution off the mountain and polished it, but the shape of the plant is still the shape of the terrain. The examples referred to below are drawn from the range at https://kushindicaseeds.com whose stock goes back to Afghanistan, northern Pakistan and the Indian Himalaya; the account itself holds for any true indica out of any shop bank. Knowing the terrain turns out to be the most reliable way to understand the pack.
The Range
The Hindu Kush stretches roughly eight hundred kilometres out of central Afghanistan into northern Pakistan, and the wider indica homeland spilling across to the Indian Himalaya to one side and the deserts of the Afghan interior to the other. The plant has been cultivated there for a very long time, mainly for hashish, and chosen generation by generation by farmers who needed a plant above any other quality else: resin that could be rubbed and pressed from a plant that would have ripened ahead of the autumn snow.
That is a separate history to the one that produced the equatorial sativas, in which seasons hardly change and the plant could grow for half a year. Everything that follows is the consequence of four facts about the terrain: it is high, it is arid, the summer is short, and the nights turn cold fast. The sequence that they are discussed below does not matters; a plant meets every one of them in the same once.
Leaves for a Thin Atmosphere
The indica leaf is wide, thick and dark, with few wide fingers whereas a sativa fan leaf carries many thin ones. Both pressures in the terrain select for that form. Thin air and intense sun mean an high light load per square centimetre, so a wide leaf catches enough without needing a lot of area; a large thin leaf in that light just scorch. And steady wind tears fine foliage, whereas a stout, short-petioled leaf holds.
The deep colour is pigment packed densely in a thick leaf, and part of the same adaptation. To the grower these leaves count in a single practical respect: a broad-leafed indica canopy shades everything beneath the top layer much more completely than a sativa’s, which means the lower buds of an unmanaged indica finish in airy and weak. People who strip a few large leaves in mid-flower are undoing, a little, what the range put there for many thousands of years.
Built for a Desert Autumn
The old zone is dry: low humidity, intense sun, rare rain in the flowering summer. A plant there has two pressures that its resin answers at once. It needs to protect its reproductive parts from ultraviolet light, and it needs to keep moisture in the bud over a long stretch of desiccating wind. Trichomes do both: the resin heads absorb the ultraviolet and the waxy layer slows water loss. Selection for hashish then drove the trait further, because resin was the product.
Dense flower structure goes to the same cause: a tightly packed bud loses less water than an airy one in dry air. Inside a tent these same qualities come together, and only one of them is always welcome. The resin is. The density becomes a risk the instant the room is damp: a bud built to hold water in a desert holds it equally as well in a wet tent, and botrytis spreads through a dense indica cola more quickly than through any flower the equator ever made. The trait that sells the seed is the same trait that needs a drier room during the final few weeks.
Cold Nights: Why Some Go Purple
Mountain nights fall under ten degrees weeks before the afternoons follow, and many indica populations react to that cold by producing anthocyanin, the same pigment that turns a maple leaves purple. In the plant it appears as purple in the calyxes, fan leaves and sometimes the stem, and it offers nothing for the grower except look beautiful.
A point worth taking from it is a matter of lineage, rather than decorative. The capacity to colour is carried out of specific high-altitude stock, and a line that purples reliably in a cold final two weeks carries that ancestry whatever the label says. Strains marketed as «purple» that only turn with extreme cold, or not at all, typically have the word in the name and nothing of it not in the plant. Chilling the room during the final weeks brings the colour forward if it is present and achieves nothing where it is absent; it also checks ripening, so it is a bargain and not a costless effect.
Height Is a Cost at Two Thousand Metres
Much of the traditional growing zone lies between a thousand five hundred and three metres. Up at that height the air is thin, the ultraviolet load is heavy, the wind is relentless and every centimetre of stem above the soil takes resources the plant can ill spare. A tall plant in such ground loses more, breaks sooner and gains nothing for its height, since there is no canopy it needs to outgrow.
The population which survived is compact: short internodes, a strong thick main stem, side branches held close, often broader than it is tall. In a tent that carries over straight: a true indica seed stretches maybe half its height over through flower where a sativa doubles, sits under a lamp at a modest short gap and rarely requires tying at all. Growers short on little height buy indica for this reason, and it is the mountain, not the breeder, that they are relying on.
Seven Weeks Before the Snow
Above two thousand metres the frost-free window is brief, while the autumn arrives early and hard. A plant which needed fourteen weeks to ripen after the days began to draw in did not make seed on that ground, and its genes dropped out of the population. The plant that remained responds fast to the first shortening days and finishes in about seven to nine weeks after that signal.
In a tent that reflex is the one most frequently cited indica trait. Flip to twelve hours and the plant commits immediately, grows over a couple of weeks and stacks flower for the rest of a brief cycle. The fastest lines at Kush Indica Seeds come in at around 7 weeks after the switch, and that allows as many as five or six cycles a year out of one room whereas a long sativa allows two. That speed is no cleverness on the breeder’s part; it is the first snow encoded into the plant’s calendar.
Reading the Place Names
The great majority of indica pack labels carry the names of places or descend from them, and the places are far more informative than they realise. «Afghani» generally refers to a population from the north region, which is the classic short, resinous, fast-finishing form. «Hindu Kush» in a name refers to the central range proper and often to stock collected on the eastern side. «Chitral» and «Mazar» name particular valleys with their own recognisable types, the first often colouring and the latter large and late for an indica. Kush Indica Seeds lists the collection region for each pack whenever it is known, which makes the name from a brand into a datum the grower can plan around.
Almost all indica seed on sale is hybrid stock several generations removed from the valley, selected for consistency and not for the variation a true landrace holds; a buyer who wants the spread needs to shop for lines labelled as unselected reproductions and accept the surprises which arrive with the label.
Where the Adaptations Turn Against You
Each adaptation discussed above was a solution to the condition which a tent no longer impose, and any solution that has lost its problem behaves either of two ways: it turns into a cost-free advantage or it turns into a hazard. The fast finish and the short frame become advantages, since nothing in a tent punishes a plant for them. The density and the heavy leaf are costs, because the dry air that made sense of them is absent and the damp atmosphere of a sealed room has exactly the opposite influence.
This is why the indica grow goes well or fails in a single variable far more than on any other: humidity during the last few weeks. A person who holds it down gets the dense, frosted, early harvest the mountain built; one who does not is punished with mould in the best colas, which is exactly where the plant had trying hardest to hold moisture in. Indoors, the mountain has to be reconstructed for the last two weeks: cool, dry, moving air. All else about growing indica is easy precisely because the plant was selected for a place hard.
Kush on the Label
The word that lent the range its name has since travelled a long way from it than any term in cannabis. «Kush» in a modern pack listing can refer to a true Hindu Kush landrace, a West Coast hybrid with one Kush grandparent, or a line named Kush because the breeder thought the sound of it. The OG Kush line, which dominates the appearances of the word in the market, is probably more sativa-influenced than many of the stock it takes the name from, while its growth habit, flowering time and leaf say as much.
The practical rule is the one that holds throughout this article: ignore the word and read the terrain. A listing that gives a modest stretch, a flowering time under nine weeks, a hard bud and a broad leaf is describing a mountain plant whatever it is named; one that states a lanky habit, eleven weeks and airy buds is describing something else with a mountain name. The seed carries the place it was shaped from; the label often has forgotten.