Each trait that moves an indica seed was bred there by a mountain. The short frame, the fast flowering, the hard resinous buds, the broad dark leaf, the purple that comes in as the nights go cold: not one of them is a breeder’s invention. They are the answers a plant arrived at over thousands of years to a specific set of problems, in high altitude, in a short dry summer, on the valleys of the Hindu Kush and the ranges 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 examples pointed to below come from the range at https://kushindicaseeds.com whose catalogue traces to Afghanistan, northern Pakistan and the Indian Himalaya; the account itself holds for any genuine indica from any shop bank. Reading the terrain is the most reliable way to understand the pack.
The Range
The Hindu Kush stretches for about eight hundred kilometres from the middle of Afghanistan into northern Pakistan, with the broader indica homeland spilling across into the Indian Himalaya to one side and the deserts of the Central Asian plateau on the other. Cannabis has been cultivated there over a very long time, mainly for hashish, which means selected generation by generation by people who wanted resin above any other quality else: resin that could be sieved and sieved off a plant that would have finished ahead of the autumn snow.
That is a different selection from the one that produced the equatorial sativas, where seasons barely vary and the plant was free to flower for half a year. Everything that follows is the consequence of four facts about the place: it is high, it is arid, the summer is short, and the nights turn cold fast. The sequence in which they are discussed here hardly matter; a plant meets all of them in the same once.
The Fat Leaf
The indica fan leaf is wide, thick and dark, and few wide fingers whereas a sativa fan leaf has many narrow ones. Both things about the terrain select for the broad form. Thin air and intense sun mean a high photon load on each square centimetre, and a broad leaf catches plenty without needing a lot of surface; a large narrow-fingered leaf in that light just scorch. And steady wind shreds thin leaves, while a thick, short-stalked leaf stays put.
The deep colour is pigment 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 everything beneath the top tier far more completely than a sativa’s, so the lower flowers of an unmanaged indica come in small and loose. Growers that remove a few fan leaves in mid-flower are reversing, a little, what the mountain put there for many thousands of years.
Finishing Before the Frost
At two thousand metres the frost-free window is brief, while the autumn arrives early and hard. A plant which took fourteen weeks to ripen from the days started to draw in never make seed on such ground, so the genes left the population. The plant that stayed reacts sharply to shortening days and finishes in roughly seven to nine weeks after that signal.
Indoors that response is the one most frequently cited indica trait. Switch to twelve hours and the plant moves at once, stretches 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 from the switch, and that allows as many as five or six harvests a year from one space whereas a long sativa allows two. This speed is not cleverness on the breeder’s part; it is the first snow written into the plant’s clock.
The Colour of a Cold Valley
High-valley nights fall under ten degrees weeks before the days follow, and a good number of indica populations respond to that cold by making anthocyanin, the same pigment that turns a maple leaf red. In the plant it shows as purple through the bracts, leaves and sometimes the stem, which it does nothing for the smoker except look beautiful.
A thing to taking from it is genetic, rather than cosmetic. The capacity to turn is carried out of specific cold-valley stock, and a line that purples every time with a cool last fortnight carries the ancestry regardless of what the name claims. Lines marketed as “purple” that will only colour with heavy cold, or not at all, usually carry a colour in only the name and in the genes. Chilling the room during the final weeks brings the colour out where it exists and achieves nothing where it is absent; it at the same time checks the finish, so it is a trade and not a free effect.
Altitude: Why the Plant Is Short
Much of the traditional growing zone sits from a thousand five hundred and three thousand metres. Up that height the air is thin, the ultraviolet load is intense, the wind is relentless and every centimetre of stem over the ground takes water the plant can ill afford. A tall plant in that ground loses faster, snaps more and gains little for its height, since there is no canopy to outgrow.
The population which persisted is low: short internodes, a single thick central stem, branches held close, often wider than it is tall. In a tent that translates directly: a pure indica seed stretches perhaps half its height again in flower whereas a sativa doubles, fits under a light with a modest short gap and seldom requires training at all. Anyone short on limited height choose indica for precisely this trait, and it is the mountain, not the breeder, that those growers are thanking.
Resin as Sunscreen and Sealant
The traditional zone is dry: thin humidity, hard sun, little rainfall in the late season. 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 inside the bud over a long stretch of dry wind. Trichomes do both: the heads block the ultraviolet and their coating slows water loss. Selection for hashish then drove the resin further, because resin was the crop.
Dense flower structure belongs with the same story: a tightly packed bud loses less water than an open one in arid air. Inside a tent these two traits arrive together, and just one of them is always welcome. The resin is. The density turns into a liability the instant the air is damp: a bud built to retain water in a desert holds it equally well in a damp room, and botrytis moves through a hard indica cola faster than in anything the equator ever made. The trait that sells the seed is the same trait that calls for a drier room during the final three weeks.
The Valley Names on the Pack
Most indica pack names are the names of places or derive from them, and the names are far more informative than most buyers realise. “Afghani” generally refers to a population from the north of Afghanistan, which is the classic short, resinous, early-finishing form. “Hindu Kush” in a listing refers to the high mountains proper and often to stock collected on the Pakistani side. “Chitral” or “Mazar” name particular valleys that have their own recognisable forms, the former often colouring and the second large and slower for an indica. Kush Indica Seeds lists the origin area for each pack whenever it is known, which turns the name from from a flavour to a fact the grower can use.
Almost all indica packs on sale are hybrid stock many generations from the valley, bred for consistency and not for the spread of a pure landrace holds; a buyer that wants the population itself has to look for lines labelled as pure landrace stock and accept the variation that arrive with them.
What Changes in a Tent
Each adaptation described above was a answer to the pressure which a tent no longer impose, and a trait without its problem does one of two things: it becomes a cost-free bonus or it becomes a hazard. The speed and the short frame are advantages, because nothing in a tent punishes a plant for them. The density and the broad leaf become hazards, because the arid wind that made sense of them is absent and the still atmosphere of a sealed room does precisely the opposite influence.
That is why the indica grow goes well or goes wrong on a single factor more than any other: humidity in the final three weeks. A person that holds it low is rewarded with the hard, frosted, early harvest the mountain built; one who lets it rise is punished with rot inside the thickest colas, where the the plant was arranged hardest to keep moisture in. Indoors, the terrain has to be rebuilt for the last two weeks: cool, dry, with moving air. All that remains about running indica is easy exactly since the population was selected for somewhere much harder.
What “Kush” Means Now
The word that lent the range its name has moved a long way from it than any other in cannabis. “Kush” on a current pack name can mean a true Hindu Kush landrace, a Californian Coast hybrid with one Kush ancestor, or a strain called Kush because the seller thought the sound of it. The famous OG Kush family, which accounts for most of the use of the word today, is probably more sativa-influenced than a good deal of the plants it takes the name from, and its stretch, finishing time and leaf say as.
A usable reading is the same one which holds throughout this article: look past the word and go back to the terrain. A listing which states a modest stretch, a flowering time below nine weeks, a hard bud and a broad leaf is selling a mountain plant whatever it is called; one that states a tall habit, eleven weeks and airy buds is selling something somewhere else wearing a mountain name. The seed carries where it was shaped by; the name frequently has forgotten.