Each quality that sells an indica seed was put there by a range of mountains. The squat stature, the seven-to-nine-week flowering, the hard frosted buds, the wide blue-green leaf, the colour that comes in when the nights turn cold: none of these is an design. They are the answers a population arrived at through many thousands of years to a particular set of pressures, in great altitude, in a brief dry summer, across the valleys of the Hindu Kush and the mountains around it. Modern breeding carried that solution off the mountain and polished it, but the shape of the plant is to this day the logic of the terrain. The lines pointed to below are drawn from the range at https://kushindicaseeds.com and its catalogue goes back to Afghanistan, northern Pakistan and the Indian Himalaya; the account though applies to any genuine indica out of any seed catalogue. Reading the terrain is the most reliable way to read the pack.
A Dry Corner of Central Asia
The Hindu Kush stretches roughly eight hundred kilometres from the middle of Afghanistan towards northern Pakistan, with the wider indica zone extending over into the Indian Himalaya on one side and the lowlands of the Afghan plateau on the other. The plant has been grown there over centuries, mainly for hashish, and chosen year after year by farmers who needed a plant rather than anything else: resin that could be rubbed and pressed off a plant that would have ripened before the autumn snow.
This is a separate selection from the one that produced the equatorial sativas, in which seasons hardly vary and the plant was free to flower for most of a year. Everything that follows is a outcome of four conditions about the place: it is high, it is dry, its summer is short, and the nights go cold early. The sequence in which they are discussed here does not matters; a plant meets every one of them at once.
Leaves for a Thin Atmosphere
The indica fan leaf is broad, thick and dark, with only a few wide lobes where a sativa leaf has many thin ones. Both pressures about the terrain select for the broad form. Thin air and intense sun put a high photon load per square centimetre, and a wide leaf gathers plenty and does not need needing a lot of surface; a large thin leaf would simply scorch. And steady wind shreds thin leaves, whereas a thick, short-petioled leaf holds.
The deep colour is pigment packed densely in a thick leaf, which is one part of the same answer. For the grower these leaves matter in one everyday respect: a broad-leafed indica canopy shades all growth below the top layer much more thoroughly than a sativa’s, so lower buds on an unmanaged indica come in small and loose. People who remove a fan leaves in week three are reversing, a little, what the mountain did over thousands of years.
The Low Frame
Much of the traditional growing land sits from a thousand five hundred and three metres. Up that height the air is thin, the ultraviolet load is intense, the wind is constant and each centimetre of stem above the ground takes water the plant cannot afford. A tall plant in such ground loses faster, snaps sooner and gains little for its height, because there is no canopy it needs to clear.
The plant that survived is compact: tight internodes, a strong thick central stem, side branches kept close, frequently broader than it is tall. In a tent that carries over straight: a true indica line stretches maybe half its height over through flower where a sativa doubles, sits beneath a lamp at a short distance and rarely requires training at all. Growers short on limited height buy indica for this trait, and it is the mountain, not the breeder, that they are thanking.
Built for a Desert Autumn
The traditional homeland is arid: low humidity, hard sun, little rainfall in the flowering summer. A plant in such a place has two problems that resin answers together. It needs to protect its flowering tissue from UV exposure, and it needs to hold moisture inside the bud over a long stretch of desiccating wind. Trichomes do both: their resin heads block the ultraviolet and the coating reduces water loss. Farmers for hashish then drove the trait further, because resin was always the product.
Dense flower form belongs with the same cause: a closely packed bud loses less water than an open one in arid air. Inside a tent those same traits arrive as a pair, but only one of them is always welcome. The resin is. The density becomes a liability the instant the air is damp: a bud shaped to retain water in a desert holds it equally as well in a wet room, and botrytis moves in a dense indica cola more quickly than in anything an equator ever produced. The trait that sells the seed is the same trait that needs a drier room during the final few weeks.
The Colour of a Cold Valley
High-valley nights fall under ten degrees weeks before the afternoons do, and many indica lines react to the chill by making anthocyanin, the same compound that colours a maple leaf red. On the plant it appears as purple in the bracts, leaves and sometimes the stem, and it offers little for the smoker except looking beautiful.
The point worth take from the colour is genetic, not decorative. The capacity to colour is inherited from specific high-altitude stock, and a line that colours reliably with a cold last two weeks carries that ancestry regardless of what the label says. Strains sold as “purple” that will only turn under extreme cold, or never at all, typically carry a word in the name and not in the plant. Chilling the room in the last weeks draws the colour out if it exists and achieves nothing if it does not; it also slows ripening, so it is a bargain and not a costless effect.
Finishing Before the Frost
At two thousand metres the frost-free window is short, while the autumn arrives quickly and comes decisively. A plant which needed fourteen weeks to ripen from the days began to draw in never set seed on such ground, so its genes left the population. The plant that stayed reacts fast to shortening days and finishes in about seven to nine weeks from the signal.
In a tent that reflex is the single most frequently cited indica trait. Flip to twelve hours and the plant commits at once, stretches over a couple of weeks and fills flower for the rest of a short cycle. The fastest lines at Kush Indica Seeds come in at about 7 weeks from the switch, which allows as many as five or six harvests a year out of one room whereas a classic sativa gives two. This speed is no cleverness on the breeder’s part; it is the first snow written into the plant’s own calendar.
Reading the Place Names
Most indica pack labels are place places or derive from one, and the names are far more informative than they realise. “Afghani” usually refers to stock from the Mazar-i-Sharif of Afghanistan, and a classic short, hash-plant, fast-finishing type. “Hindu Kush” on a listing points to the central mountains proper and often to stock taken on the eastern side. “Chitral” or “Mazar” point to particular valleys that have their own local forms, the former frequently colouring and the latter heavy and slower for an indica. Kush Indica Seeds lists the collection area for every line whenever it is known, which turns the name from a flavour into a fact the grower can use.
Most indica seed on sale is hybrid material several generations from the valley, bred for consistency and not to preserve the spread of a pure landrace holds; a buyer that wants the spread has to shop for lines described as unselected landrace stock and expect the variation that come with them.
What Changes in a Tent
Every trait described above was a solution to a condition which a tent no longer present, and a trait that has lost its problem does one of two ways: it turns into a free advantage or it becomes a hazard. The speed and the short frame become bonuses, since no condition in a room penalises a plant for them. The density and the heavy leaf are hazards, because the dry wind that made sense of them is gone and the damp air of a sealed room does precisely the reverse effect.
This is why the indica grow goes well or goes wrong on one variable far more than on any other: humidity in the final few weeks. A grower that holds it down gets the dense, resinous, fast flower the mountain built; one who does not is punished with mould in the thickest colas, which is exactly where the plant had trying the plant to hold moisture in. Indoors, the terrain is to be rebuilt in the last fortnight: cool, dry, with moving air. All else about running indica is easy exactly since the population was selected to survive a place hard.
Kush on the Label
The word that gave the mountains its name has travelled a long way from it than almost any term in cannabis. “Kush” on a modern pack listing can refer to a unselected Hindu Kush reproduction, a West Coast hybrid with one Afghan grandparent, or a strain called Kush since the seller liked the sound would sell. A famous OG Kush line, and this accounts for most of the use of the word today, is probably more sativa-influenced than many of the plants it borrows the name from, and its stretch, flowering time and leaf say as much.
The practical reading is the one that holds across this article: ignore the word and read the terrain. A listing that gives an modest stretch, a finishing time below nine weeks, a hard bud and a wide leaf is selling a mountain plant regardless of what it is named; one that states a lanky habit, twelve weeks and open flowers is describing something somewhere else wearing a mountain name. The seed remembers where it was shaped from; the label frequently does not.
