Every trait that sells an indica seed was put there by a range of mountains. The squat stature, the fast flowering, the hard resinous buds, the broad blue-green leaf, the purple that appears as the nights turn cold: not one of these is a breeder’s design. They are the answers a plant found over thousands of years to a particular set of pressures, in high altitude, in a short dry, cold season, on the valleys of the Hindu Kush and the mountains beyond it. Modern breeding carried that answer down the mountain and polished it, but the logic of the plant is still the shape of the place. The examples referred to in what follows are drawn from the range at https://kushindicaseeds.com and its stock goes back to Afghanistan, northern Pakistan and the Indian Himalaya; the argument itself applies to any genuine indica out of any shop bank. Reading the terrain turns out to be the most reliable way to understand the pack.
A Dry Corner of Central Asia
The Hindu Kush runs for about eight hundred kilometres out of the middle of Afghanistan towards northern Pakistan, with the broader indica homeland spilling over into the Indian Himalaya on one side and the lowlands of the Afghan interior to the other. Cannabis has been cultivated there for a very long time, chiefly for hashish, which means chosen year by generation by people who needed a plant rather than anything else: something that could be rubbed and sieved off a plant that would have finished before the autumn frost.
This is a separate selection from the one that shaped the equatorial sativas, where seasons hardly change and the plant was free to flower for half a year. All that follows is a outcome of a handful of facts about the terrain: it is high, it is dry, its summer is short, and its nights go cold fast. The sequence in which they are discussed below does not matters; a plant meets all of them at once.
Cold Nights: Why Some Go Purple
Mountain nights drop under ten degrees long before the days do, and a good number of indica lines react to the cold by making anthocyanin, the same pigment that turns autumn leaves red. In the plant it shows as purple in the bracts, leaves and occasionally the stem, and it offers nothing for the smoker beyond looking striking.
A thing to take from it is a matter of lineage, rather than cosmetic. The capacity to colour is carried from specific high-altitude populations, and a strain that purples every time with a cool final fortnight carries that ancestry regardless of what the name says. Strains marketed as “purple” that only turn under heavy cold, or never really, typically carry the word in only the name and not in the plant. Chilling the room during the final weeks brings the colour forward if it exists and achieves nothing if it does not; it at the same time slows ripening, so it is a trade rather than a costless trick.
The Fat Leaf
The indica leaf is broad, heavy and a deep green, with only a few wide lobes where a sativa leaf has many thin ones. Two pressures in the climate select for that shape. Thin air and intense sun put an heavy light dose on each square centimetre, and a broad leaf catches enough and does not need needing a lot of surface; a big thin leaf in that light simply scorch. And constant wind tears fine leaves, whereas a thick, short-petioled leaf stays put.
The dark colour is chlorophyll packed thickly into a thick leaf, which is one part of the same adaptation. To the grower the features count in a single practical way: a broad-leafed indica canopy shades all growth below the top tier far more completely than a sativa’s, so the lower buds on an unmanaged indica come in airy and weak. People who strip a large leaves at mid-flower are undoing, a little, what the mountain put there over many thousands of years.
The Low Frame
A good deal of the old growing land sits from fifteen hundred and three metres. At that height the air is thin, the UV load is intense, the wind is relentless and each centimetre of stem above the ground takes water the plant can ill spare. A tall plant in such terrain loses more, snaps more and gets little for the extra height, since there is no canopy to clear.
The population which survived is low: short internodes, a single dense central stem, branches held close, frequently wider than it is tall. In a tent that carries over straight: a pure indica line gains maybe half its height over in flower where a sativa doubles, sits beneath a lamp with a short gap and seldom requires tying down. Anyone short on little height choose indica for precisely this reason, and it is the mountain, not the breeder, that those growers are thanking.
Seven Weeks Before the Snow
Above two thousand metres the frost-free window is short, while the autumn comes early and comes hard. A plant which needed fourteen weeks to ripen from the days began to shorten never set seed on such terrain, and its genes dropped out of the population. The plant that remained reacts fast to shortening days and ripens in roughly seven to nine weeks from that cue.
In a tent that response is the one most valued indica trait. Switch to twelve hours and the plant moves immediately, grows over a fortnight and stacks flower for the remainder of a short run. The fastest strains at Kush Indica Seeds finish at about 7 weeks from the flip, and that permits as many as five or six harvests a year from one space where a long sativa gives two. This difference is not cleverness on the breeder’s part; it is the first snow written into the plant’s clock.
Dry Air: Why the Buds Are Dense and Resinous
The traditional zone is arid: thin humidity, hard sun, rare rainfall in the flowering summer. A plant there has two problems that its resin solves together. It must protect its reproductive tissue from ultraviolet light, and it needs to hold moisture in the flower through a long stretch of desiccating wind. Trichomes does both: the heads absorb the ultraviolet and their coating reduces water loss. Farmers for hashish on top of that drove the trait further, since resin was the product.
Tight bud structure belongs with the same cause: a closely packed bud loses less water than an open one in arid air. In a tent these two traits come as a pair, but only one of them is unconditionally an advantage. The resin is. The density becomes a risk the instant the air is damp: a bud built to hold water in a desert holds it just as well in a damp tent, and bud rot spreads in a hard indica cola faster than through any flower the equator has ever made. The trait that sells the seed is the same trait that calls for a dehumidifier in the final few weeks.
Reading the Place Names
The great majority of indica pack names carry place places or derive from one, and the places are far more informative than most buyers realise. “Afghani” generally means a population from the north of Afghanistan, and a classic short, resinous, fast-finishing form. “Hindu Kush” on a name points to the high mountains itself and frequently to stock taken on the Pakistani side. “Chitral” or “Mazar” name specific valleys that have their own local forms, the first frequently colouring and the second heavy and slower for an indica. Kush Indica Seeds gives the origin region on each line whenever it is known, which turns the name a brand to a fact the grower can use.
Almost all indica seed on sale is hybrid material many generations from the original collection, selected for consistency and not for the variation a pure landrace holds; a buyer who is after the population itself has to look for lines labelled as pure reproductions and expect the variation which come with the label.
What Changes in a Tent
Each trait described above was a solution to the condition which a tent no longer present, and a solution that has lost its problem does one of two things: it turns into a cost-free advantage or it turns into a hazard. The speed and the short stature become advantages, since nothing in a tent penalises a plant for them. The density and the heavy canopy become hazards, because the dry wind that made sense of them is absent and the damp atmosphere of a closed room has exactly the opposite influence.
That is why the indica grow succeeds or goes wrong on one factor far more than any other: humidity during the final few weeks. A person who keeps it low is rewarded with the hard, frosted, fast harvest the mountain built; one who does not is punished with mould in the thickest colas, which is the the plant had trying the plant to keep water in. Indoors, the terrain has to be reconstructed in the last fortnight: cool, dry, moving air. All else about running indica is easy precisely since the plant was bred to survive a place much harder.
Kush on the Label
The word that lent the mountains its name has moved a long way from it than any term in cannabis. “Kush” on a current pack listing can refer to an true Hindu Kush landrace, a Californian Coast hybrid carrying one Afghan ancestor, or a strain called Kush since the seller thought the sound of it. A famous OG Kush line, and this accounts for most of the appearances of the word in the market, is probably as much sativa-leaning than many of the plants it borrows the word from, and its stretch, finishing time and leaf show as much much.
The practical reading is the same one that applies throughout this page: look past the word and go back to the terrain. A listing that gives a modest 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 tall frame, eleven weeks and open flowers is describing something somewhere else wearing a borrowed name. The seed remembers where it was shaped by; the label frequently does not.
