Every quality that moves an indica seed was put there by a range of mountains. The short frame, the fast flowering, the dense resinous flowers, the broad dark leaf, the purple that appears when the nights turn cold: none of these is a breeder’s design. They are the answers a plant arrived at over thousands of years to a specific set of pressures, in high altitude, in a short dry, cold season, on the slopes of the Hindu Kush and the mountains beyond it. Breeders took that answer off the mountain and refined it, but the shape of the plant is to this day the shape of the place. The lines pointed 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 itself applies to any true indica out of any shop bank. Knowing the terrain turns out to be the quickest way to read the pack.
Where the Population Formed
The Hindu Kush stretches roughly eight hundred kilometres out of the middle of Afghanistan into northern Pakistan, with the broader indica zone extending over to the Indian Himalaya on one side and the lowlands of the Central Asian interior to the other. Cannabis has been cultivated there for centuries, mainly for hashish, which means chosen year by generation by farmers who wanted a plant above anything else: resin that could be rubbed and sieved from a plant that would have finished before the first frost.
This is a separate selection from the one that shaped the tropical sativas, where daylength barely vary and the plant was free to grow for half a year. Everything that comes below is a outcome of four conditions about the place: it is high, it is arid, the summer is short, and its nights go cold fast. The sequence in which they are discussed here hardly matter; a plant experiences every one of them in the same season.
The Short Season: Why It Flowers Fast
Above two thousand metres the frost-free season is short, and the autumn comes quickly and hard. A plant that took fourteen weeks to finish after the days started to shorten did not make seed in that terrain, and its genes left the population. What stayed reacts fast to the first shortening days and finishes in roughly seven to nine weeks after that cue.
In a tent that response is the one most cited indica trait. Flip to twelve hours and the plant moves immediately, grows for a fortnight and fills flower over the remainder of a short cycle. The quickest strains at Kush Indica Seeds finish at around 7 weeks from the switch, which allows as many as five or six harvests a year from one room where a long sativa allows perhaps two. This difference is no cleverness on the breeder’s part; it is the first snow encoded into the plant’s calendar.
Built for a Desert Autumn
The old zone is dry: low humidity, hard sun, little rainfall through the flowering summer. A plant there has two problems that its resin answers together. It needs to protect its reproductive parts from ultraviolet light, and it needs to keep water inside the bud through weeks of dry wind. Trichomes does both: the resin heads block UV and the waxy layer reduces moisture loss. Selection for hashish on top of that drove the resin even harder, because resin was the product.
Dense flower form belongs to the same cause: a tightly packed bud loses less water than an airy one in dry air. In a tent those same traits come together, but just one of them is always welcome. The resin is. The density becomes a liability the moment the room is damp: a bud shaped to hold water in a desert holds it equally well in a damp tent, and botrytis moves through a dense indica cola faster than in anything the equator ever made. The trait that moves the seed is the same trait that needs a dehumidifier in the final three weeks.
The Colour of a Cold Valley
High-valley nights fall below ten degrees weeks before the days do, and many indica populations respond to that chill by making anthocyanin, the same pigment that colours a maple leaf red. On the plant it appears as purple in the bracts, fan leaves and sometimes the stem, and it does nothing for the smoker beyond looking beautiful.
The thing to taking from it is genetic, not cosmetic. The tendency to turn is carried out of particular cold-valley populations, and a line that purples every time in a cool last two weeks carries that ancestry whatever the label claims. Strains sold as “purple” that only turn with heavy cold, or not at all, usually have the word in only the name and nothing of it not in the plant. Chilling the room in the final weeks draws the colour out where it exists and does nothing if it does not; it at the same time slows ripening, so it is a bargain rather than a costless effect.
Leaves for a Thin Atmosphere
An indica fan leaf is broad, heavy and dark, with only a few wide lobes where a sativa fan leaf has more thin ones. Two pressures in the climate favour that shape. Thin air and intense sun put an heavy photon dose on each square centimetre, and a wide leaf catches plenty and does not need needing much area; a big thin leaf in that light just burn. And steady wind shreds thin foliage, while a stout, short-petioled leaf stays put.
The dark colour is chlorophyll packed thickly in a heavy leaf, which is part of the same adaptation. For the tent these leaves matter in a single everyday respect: a dense indica canopy blocks light from all growth beneath the top tier far more thoroughly than a sativa’s, which means the lower buds of an untrained indica finish in small and loose. Growers that remove a few few fan leaves in week three are reversing, carefully, what the range did for many thousands of years.
The Low Frame
A good deal of the old growing land sits between fifteen hundred and three thousand thousand metres. Up that height the air is thin, the UV exposure is heavy, the wind is constant and each centimetre of stem over the ground takes water the plant cannot afford. A tall plant on such ground loses faster, snaps more and gets nothing for the height, since there is no canopy to clear.
The plant that survived is compact: tight internodes, a strong thick main stem, branches held close, frequently broader than it is tall. In a tent that translates straight: a pure indica seed gains perhaps half its height again in flower whereas a sativa doubles, fits under a lamp at a modest gap and rarely needs training down. Growers with little height choose indica for this reason, and it is the mountain, not the breeder, that those growers are thanking.
Afghani, Mazar, Chitral, Hindu Kush
Most indica seed labels are the names of places or derive from one, and the names are far more informative than they realise. “Afghani” generally means stock from the Mazar-i-Sharif region, and the classic short, hash-plant, fast-finishing form. “Hindu Kush” in a listing refers to the central mountains proper and frequently to stock taken on the Pakistani side. “Chitral” and “Mazar” name specific valleys that have their own local types, the first often purpling and the latter large and late for an indica. Kush Indica Seeds gives the collection area on every line where it is documented, and that makes the name from from a brand into a fact the grower can use.
Almost all indica seed on sale is hybrid material several generations from the original collection, selected for consistency rather than for the variation of a pure landrace carries; a buyer that is after the spread has to look for lines labelled as unselected landrace stock and accept the variation which arrive with the label.
What Changes in a Tent
Every trait described above was an solution to the condition which a tent does not present, and any trait that has lost its pressure does either of two things: it turns into a free bonus or it turns into a hazard. The fast finish and the short frame become bonuses, because no condition in a room punishes a plant for them. The density and the heavy canopy are costs, since the arid air that justified them is gone and the still atmosphere of a closed room has exactly the opposite effect.
That is why the indica grow succeeds or goes wrong on one factor far more than any other: humidity in the last three weeks. A grower who holds it down gets the dense, frosted, early flower the mountain bred; one who lets it rise gets rot inside the thickest colas, which is exactly where the mountain had trying the plant to hold water in. Indoors, the mountain has to be reconstructed in the last fortnight: cool, dry, moving air. All else about running indica is easy exactly because the plant was selected for a place hard.
What “Kush” Means Now
The word that gave the mountains its name has moved a long way from it than any other in cannabis. “Kush” in a modern seed name may refer to an true Hindu Kush reproduction, a Californian Coast hybrid carrying one Kush grandparent, or a line called Kush since the breeder thought the sound would sell. The OG Kush line, which accounts for most of the use of the word today, is most likely as much sativa-influenced than many of the plants it borrows the word from, while its stretch, flowering time and leaf say as.
The practical reading is the one that applies throughout this article: ignore the word and read the terrain. A listing that gives an low stretch, a flowering time below nine weeks, a hard flower and a wide leaf is describing a mountain plant whatever it is called; one that states a lanky habit, twelve weeks and open buds is selling something somewhere else wearing a borrowed name. The seed remembers where it came from; the name often has forgotten.