Every trait that sells an indica seed was put there by a mountain. The squat frame, the seven-to-nine-week flowering, the dense frosted flowers, the wide blue-green leaf, the colour that appears when the nights turn cold: none of these is a breeder’s design. They are the answers a plant found over many thousands of years to a particular combination of pressures, at great altitude, in a short dry summer, across the slopes of the Hindu Kush and the mountains beyond it. Breeders carried that answer off the mountain and polished it, but the logic of the plant is to this day the logic of the terrain. The lines referred to in what follows come from the range at https://kushindicaseeds.com whose catalogue goes back to Afghanistan, northern Pakistan and the Indian Himalaya; the account though applies for any true indica out of any shop bank. Knowing the terrain turns out to be the most reliable way to understand the pack.
A Dry Corner of Central Asia
The Hindu Kush stretches roughly eight hundred kilometres out of central Afghanistan into northern Pakistan, with the broader indica homeland spilling across to the Indian Himalaya on one side and the lowlands of the Afghan plateau to the other. The plant has been grown there for centuries, mainly for hashish, which means chosen generation after year by farmers who needed a plant rather than any other quality else: resin that could be sieved and pressed from a plant that had finished ahead of the first frost.
That is a separate history to the one that shaped the equatorial sativas, in which daylength barely change and the plant could grow for most of a year. All that comes below is a outcome of a handful of conditions about the place: it is high, it is dry, its summer is short, and the nights go cold fast. The order in which they are discussed below hardly matter; a plant meets all of them in the same season.
Built for a Desert Autumn
The old homeland is arid: low humidity, intense sun, little rain in the flowering summer. A plant in such a place has two pressures which resin solves together. It must shield its flowering tissue from UV exposure, and it must keep water in the bud over weeks of desiccating wind. A heavy coat of trichomes does both: the resin heads block UV and the waxy layer slows moisture loss. Selection for hashish on top of that drove the resin further, since resin was always the product.
Dense bud form goes to the same story: a tightly clustered bud gives up less water than an airy one in dry air. Inside a tent these same traits arrive together, 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 just well in a damp room, and botrytis spreads through a hard indica cola more quickly than in anything the equator ever made. The quality that moves the seed is the one that needs a dehumidifier during the final few weeks.
Seven Weeks Before the Snow
Above two thousand metres the growing window is short, and the autumn arrives early and decisively. A plant that needed fourteen weeks to finish after the days began to draw in did not set seed on such terrain, and its genes left the population. What remained responds fast to shortening days and ripens in about seven to nine weeks after the cue.
Indoors that response is the single most frequently valued indica quality. Switch to twelve hours and the plant moves at once, stretches over a couple of weeks and stacks flower over the remainder of a brief run. The fastest strains at Kush Indica Seeds come in in around 7 weeks from the flip, and that allows five or six harvests a year from one room where a long sativa allows perhaps two. That speed is no efficiency on the breeder’s side; it is the snowline written into the plant’s clock.
Height Is a Cost at Two Thousand Metres
A good deal of the traditional growing zone sits from fifteen hundred and three metres. At at that height the air is thin, the ultraviolet load is intense, the wind is relentless and each centimetre of stem above the ground takes water the plant can ill afford. A tall plant on that terrain loses more, snaps sooner and gains nothing for the extra height, because there is no canopy it needs to clear.
The plant which survived is low: short internodes, a single dense central stem, side branches held close, frequently wider than it is tall. In a tent that translates straight: a pure indica seed gains maybe half its height again in flower whereas a sativa doubles, fits beneath a lamp with a modest modest gap and rarely needs training down. Anyone with limited height buy indica for precisely this trait, and it is the mountain, not the breeder, that those growers are thanking.
Wind and Sun: Why the Leaf Is Broad and Dark
The indica fan leaf is broad, thick and a deep green, with only a few broad lobes whereas a sativa fan leaf carries many thin ones. Both pressures about the terrain select for that form. Thin air and intense sun put an heavy light dose on each square centimetre, and a broad leaf catches enough without a lot of area; a big thin leaf would just burn. And constant wind tears thin leaves, while a stout, short-stalked leaf holds.
The deep colour is chlorophyll loaded thickly in a thick leaf, and one part of the same adaptation. To the tent these leaves count in one everyday way: a broad-leafed indica canopy blocks light from everything beneath the top tier much more completely than a sativa’s, so the lower buds of an untrained indica finish in small and loose. Growers who remove a few large leaves at mid-flower are undoing, a little, something the range put there over many thousands of years.
The Colour of a Cold Valley
High-valley nights drop below ten degrees long before the afternoons follow, and many indica populations respond to that chill by making anthocyanin, the same compound that colours autumn leaf red. In the plant it appears as purple in the bracts, fan leaves and sometimes the stem, and it does nothing for the grower beyond looking beautiful.
The point to take from the colour is a matter of lineage, not cosmetic. The tendency to colour is inherited out of specific high-altitude populations, and a line that colours reliably in a cold last two weeks carries that ancestry regardless of what the label claims. Strains sold as “purple” that will only turn under extreme cold, or never really, usually have a colour in only the name and nothing of it not in the genes. Chilling the room in the final weeks draws the colour forward where it exists and achieves nothing where it does not; it at the same time slows ripening, so it is a bargain rather than a costless trick.
Afghani, Mazar, Chitral, Hindu Kush
The great majority of indica seed labels are the names of places or derive from one, and the places are more useful than they look. “Afghani” generally refers to a population out of the Mazar-i-Sharif of Afghanistan, which is a classic squat, hash-plant, early-finishing form. “Hindu Kush” in a listing points to the central range itself and often to stock collected on the Pakistani side. “Chitral” and “Mazar” point to particular valleys that have their own local types, the first often purpling and the second large and late for an indica. Kush Indica Seeds lists the collection region on each pack whenever it is known, which turns the name from from a brand into a datum the grower can use.
Most indica seed on sale is worked material many generations removed from the valley, bred for uniformity rather than for the variation of a true landrace carries; a buyer who is after the population itself has to look for lines labelled as pure reproductions and expect the surprises which come with them.
What Changes in a Tent
Each adaptation described above was an answer to the pressure that a tent does not present, and a solution without its pressure behaves one of two things: it becomes a free bonus or it turns into a cost. The speed and the low frame are advantages, because nothing in a room punishes a plant for them. The density and the heavy leaf become hazards, since the arid wind that made sense of them is absent and the still air of a closed room does exactly the reverse effect.
That is why the indica grow succeeds or goes wrong in a single variable far more than on any other: humidity during the final few weeks. A grower that keeps it down is rewarded with the hard, resinous, fast flower the mountain bred; one who does not is punished with mould inside the thickest colas, which is the the mountain was trying hardest to hold moisture in. Indoors, the mountain has to be rebuilt in the final two weeks: cool, dry, with moving air. All that remains about running indica is forgiving exactly because the plant was selected for somewhere much harder.
Kush on the Label
The word that lent the range its name has moved a long way from it than almost any other in cannabis. “Kush” on a current pack name can mean a true Hindu Kush landrace, a Californian Coast hybrid carrying one Afghan grandparent, or a line named Kush because the breeder liked the sound would sell. A OG Kush line, which accounts for most of the appearances of the word in the market, is probably more sativa-influenced than many of the stock it takes the word from, and its stretch, finishing time and leaf show as much.
A practical reading is the one which holds throughout this page: look past the word and go back to the terrain. A listing which states a low stretch, a flowering time under nine weeks, a dense flower and a broad leaf is describing a mountain plant regardless of what it is called; one that gives a lanky habit, eleven weeks and airy flowers is selling a plant from else with a mountain name. The seed remembers where it came from; the label frequently does not.
