Each quality that sells an indica seed has been put there by a range of mountains. The short stature, the fast flowering, the dense frosted buds, the wide blue-green leaf, the colour that comes in when the nights turn cold: none of them is a breeder’s design. They are the answers a plant arrived at over many thousands of years to a particular set of pressures, in high altitude, in a brief dry, cold season, across the slopes of the Hindu Kush and the mountains beyond it. Breeders took that answer off the mountain and polished it, but the logic of the plant is still the logic of the place. The lines referred to in what follows are drawn from the range at https://kushindicaseeds.com whose stock goes back to Afghanistan, northern Pakistan and the Indian Himalaya; the argument though holds for any true indica from any seed bank. Reading the terrain turns out to be the quickest way to understand the pack.
The Range
The Hindu Kush stretches for about eight hundred kilometres from central Afghanistan towards northern Pakistan, and the broader indica homeland extending across to the western Himalaya on one side and the deserts around the Afghan interior on the other. Cannabis has been grown there for centuries, mainly for hashish, which means chosen year by generation by farmers who needed resin rather than anything else: resin that could be sieved or pressed from a plant that would have ripened ahead of the first snow.
This is a different history to the one that produced the equatorial sativas, where seasons barely change and the plant could flower for most of a year. Everything that follows is a consequence of a handful of conditions about the terrain: it is high, it is arid, its summer is short, and the nights turn cold fast. The sequence that they are taken here hardly matter; a plant meets every one of them in the same once.
Altitude: Why the Plant Is Short
A good deal of the old growing land sits between fifteen 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 over the ground takes resources the plant cannot afford. A tall plant in such ground dries out faster, breaks more and gets nothing for its height, because there is no canopy it needs to clear.
The plant that survived is low: tight internodes, a single dense central stem, branches held close, frequently broader than it is tall. In a tent that translates directly: a pure indica seed gains maybe half its height over in flower where a sativa doubles, fits under a light at a modest modest distance and rarely requires training at all. Growers short on limited headroom buy indica for this trait, and it is the mountain, not the breeder, that those growers are thanking.
The Colour of a Cold Valley
Mountain nights drop under ten degrees weeks before the afternoons follow, and a good number of indica lines react to that cold by making anthocyanin, the same pigment that colours autumn leaves red. In the plant it appears as purple in the bracts, leaves and occasionally the stem, which it does little for the smoker beyond looking beautiful.
The thing to taking from the colour is genetic, not decorative. The capacity to colour is carried out of specific high-altitude stock, and a strain that purples reliably with a cold final two weeks carries that origin whatever the label says. Strains sold as “purple” that only turn with extreme cold, or not at all, typically carry the word in only the name and nothing of it in the plant. Chilling the room during the last weeks draws the colour forward if it is present and does nothing at all if it does not; it also checks ripening, so it is a trade rather than a costless effect.
Leaves for a Thin Atmosphere
The indica leaf is wide, heavy and a deep green, and only a few wide fingers whereas a sativa leaf has more narrow ones. Two pressures in the climate select for that form. Thin air and hard sun put an heavy light load on each square centimetre, and a broad leaf catches enough and does not need needing much surface; a large narrow-fingered leaf would just scorch. And steady wind shreds thin foliage, while a thick, short-stalked leaf stays put.
The dark colour is chlorophyll packed densely in a thick leaf, and one part of the same adaptation. For the grower these leaves matter in one everyday respect: a broad-leafed indica canopy shades all growth beneath the top tier far more thoroughly than a sativa’s, which means the lower buds on an untrained indica come in small and loose. People that remove a few large leaves in mid-flower are undoing, a little, what the mountain did for many thousands of years.
Built for a Desert Autumn
The old zone is dry: thin humidity, hard sun, little rain through the late summer. A plant in such a place has two problems which resin answers at once. It must protect its flowering tissue from ultraviolet light, and it must keep water in the bud through a long stretch of desiccating wind. A heavy coat of trichomes does both: their heads absorb the ultraviolet and the waxy layer reduces moisture loss. Selection for hashish then drove the trait even harder, because resin was the crop.
Dense bud structure goes to the same story: a closely clustered bud gives up less water than an airy one in arid air. Inside a tent these two traits come as a pair, and just one of them is always an advantage. The resin is. The density becomes a liability the instant the room is humid: a bud shaped to retain water in a desert holds it equally as well in a damp room, and botrytis spreads through a dense indica cola more quickly than through anything the equator has ever made. The quality that sells the seed is the same trait that calls for a dehumidifier during the final few weeks.
Seven Weeks Before the Snow
At two thousand metres the frost-free window is brief, and the autumn arrives early and comes hard. A plant which took fourteen weeks to finish after the days began to draw in did not make seed in such ground, so the genes left the population. The plant that stayed responds fast to shortening days and ripens in roughly seven to nine weeks from the cue.
In a tent that reflex is the one most frequently cited indica trait. Switch to twelve hours and the plant moves at once, stretches for a fortnight and stacks flower for the rest of a short run. The quickest strains at Kush Indica Seeds come in at about 7 weeks from the flip, which allows five or six harvests a year out of one space whereas a long sativa gives perhaps two. That speed is not efficiency on the breeder’s side; it is the snowline written into the plant’s calendar.
The Valley Names on the Pack
The great majority of indica pack labels are the names of places or descend from them, and the names are more useful than most buyers realise. “Afghani” usually means a population out of the Mazar-i-Sharif of Afghanistan, and a classic short, hash-plant, early-finishing form. “Hindu Kush” on a listing points to the central mountains itself and often to material taken on the eastern side. “Chitral” or “Mazar” point to specific valleys that have their own local forms, the first often purpling and the second heavy and slower for an indica. Kush Indica Seeds lists the collection region for each line where it is documented, which makes the name from a brand into a fact the grower can use.
Most indica packs on sale is hybrid stock several generations from the original collection, selected for uniformity and not to preserve the variation a pure landrace holds; a buyer who is after the spread needs to look for packs labelled as pure reproductions and accept the surprises that come with them.
Where the Adaptations Turn Against You
Every adaptation discussed above was a solution to the pressure which a tent no longer present, and a solution without its problem behaves one of two things: it becomes a free bonus or it becomes a cost. The fast finish and the short stature are bonuses, since no condition in a room punishes a plant for them. The density and the heavy canopy are hazards, since the arid air that made sense of them is gone and the still air of a closed room does exactly the reverse influence.
This is why the indica grow succeeds or goes wrong on one variable more than any other: humidity in the final few weeks. A person who holds it low is rewarded with the hard, resinous, early flower the mountain built; one who does not is punished with mould in the thickest colas, where exactly where the mountain was trying hardest to keep water in. Indoors, the terrain is to be reconstructed for the last two weeks: cool, dry, moving air. Everything that remains about growing indica is easy precisely since the plant was selected for a place hard.
The Drift of a Word
The word that gave the range its name has moved a long way from it than any other in cannabis. “Kush” on a modern seed name may refer to an unselected Hindu Kush landrace, a Californian Coast hybrid carrying one Afghan ancestor, or a line called Kush because the breeder liked the sound would sell. A OG Kush family, which accounts for most of the appearances of the word today, is most likely as much sativa-leaning than many of the stock it takes the word from, while its stretch, finishing time and leaf show as much.
The usable rule is the one which applies throughout this article: look past the word and read the terrain. A listing that gives a low stretch, a flowering time under nine weeks, a hard flower and a broad leaf is describing a mountain plant regardless of what it is called; one that gives a tall habit, twelve weeks and airy buds is selling a plant from somewhere else wearing a borrowed name. The seed carries the place it came from; the name often has forgotten.