Along the rivers in central Siberia there is a scrawny little cannabis plant that nobody bothered to cultivate for most of history. It flowers whether the days are long or short, because where it lives the summer is too short to wait for a signal from the sun. That plant is Cannabis ruderalis, and nearly every autoflower seed sold today carries its stubborn internal clock to it. Breeders folded ruderalis into modern indica and sativa lines, and after several decades of refinement the result is a seed that completes its whole life on a preset schedule. Shops such as https://turboautoflowerseeds.com deal in exactly that kind of seed, and the fastest line in its range finishes in around 56 days from sprout. This article follows a typical autoflower grow one week at a time, from the moment you choose the pack to the day you cut the plant, with the decisions that count at each stage and the errors that cannot be reversed later.

Before Day One: Choosing the Seed

An autoflower cannot be saved by a longer vegetative stage, so the room for error is smaller than with a photoperiod plant and the choice of seed carries more weight. A handful of things on the pack are worth a closer look.

• Generation. Older autos were small and harsh; current releases are many generations removed and much closer to their photoperiod parents. A new release from a serious breeder is a safer bet than a discount line of uncertain age.
• Total cycle length. Autoflower breeders quote time from seed, not from flip. A figure of eight weeks refers to eight weeks of life, and that covers germination.
• Light tolerance. Some lines are bred for twenty hours light and repay it with bigger yields; others do better at eighteen. The breeder’s recommendation is not decorative.
• Height range. Autos range from knee-high to well over a metre. Match the strain to the space available, because there is no opportunity to keep the plant small by delaying flower.

Each strain on Turbo Autoflower Seeds ships with a grow sheet that gives the expected height, light preference and cycle length, which takes away most of the guesswork at this stage.

Days 1–7: Nothing to See, Everything Happening

The seed cracks, a pale taproot appears, and within a few days two round cotyledon leaves push through the surface. Nothing about this week looks dramatic, but the root that forms now is the base for everything after it.

The single decision that matters most in week one is where the seed goes. Autoflowers resent transplanting; a disturbed root system at this stage costs days of growth that the plant cannot get back. Experienced growers start the seed directly in its final pot, or at least in a container it will stay in. The medium should be airy and only slightly damp; a seedling overwatered in a large wet pot is the commonest autoflower loss of all.

Weeks Two and Three: The Only Window for Training

By the beginning of week two the plant is growing true leaves and adding size quickly. This is the closest thing an autoflower has to a vegetative stage, and it is finished almost before it begins.

Anything that shapes the plant has to happen now, and it has to be light. Tie-down training, where branches are bent sideways and held, is fine on most autos and spreads the canopy without checking growth. Topping is riskier: fast strains shrug it off, others lose a week they do not have. Stripping leaves at this stage is nearly always a mistake. If in doubt, leave the plant be and settle for its natural shape; a slightly untidy autoflower beats a stressed one.

When Preflowers Appear

At some point between the third and start of the fifth week, small white pistils appear at the nodes and the plant begins to stretch. No timer was changed; the clock did it. Here is the moment that defines the autoflower: the grower is a spectator to the most important transition in the whole life.

Two things change in practice. Light can remain where it is, typically eighteen to twenty hours a day for the whole run; there is no reason to cut it to twelve, and doing so only reduces the harvest. And feeding moves slowly away from nitrogen towards phosphorus and potassium. Gradually is the operative word: an autoflower given a hard bloom feed in week four frequently shows burnt leaf edges and slows. Small doses, stepped up week by week, fit a plant this small.

Where the Yield Is Made

The stretch lasts for roughly two weeks and can double the plant’s height, and that is why the height range on the pack mattered in week zero. When it slows, flowers begin to stack and the grow moves into its single most productive stretch.

• Light distance. As the canopy rises, lift the lamp to hold the same distance. Heat stress at the top of a short plant loses the best flowers.
• Water volume. The plant uses far more than it did in week two. Pots that go dry between waterings in a day want a bigger volume per watering, not more regular light ones.
• Humidity. Tight autoflower buds on a plant this low sit close to damp soil; dropping relative humidity into the forties prevents mould before it takes hold.

Knowing When to Stop

The quoted cycle length is a median, not a deadline. Single plants from the same pack ripen a week either side, and conditions stretch the number further. The plant, not the pack, says when it is ready.

The usual signs: pistils go from white to amber and curl inward; the lowest leaves yellow and drop as the plant pulls its resources into the flowers; and under a loupe the resin glands change from clear to cloudy, with a proportion of amber. Cutting at mostly cloudy with a few amber heads is the conventional target; more amber gives a heavier, more sedative result. Running plain water for the final week is widely practised and low-risk, whatever the debate about its value says.

The Mistakes That Cannot Be Undone

A photoperiod grower who damages a plant can extend a few weeks of veg and let it recover. An autoflower grower cannot; the clock goes on running. The following are the mistakes that show up in harvest size without exception.

• Cutting the light to twelve hours “because it is flowering”. The plant never needed the signal, and the lost hours convert directly into lost yield.
• Transplanting after the first week. Each day of root recovery is a day of flower lost.
• Heavy feeding before week four. Autos are small feeders early on and scorch easily; the damage falls exactly when the plant needs to be building size.
• Overwatering a seedling in a large pot. The root sits in wet medium, stops, and the plant flowers at a fraction of its potential.
• Topping a slow or unknown strain. On the slow line it takes a week that the plant never gets back.

What the Calendar Is Good For

All of the above sounds like a catalogue of constraints, and in one sense it is. But the fixed clock is the reason that made autoflowers popular, rather than a drawback to tolerate.

A run that ends in ten weeks no matter what can be planned to the day: sow in April, cut in June, sow again. A balcony grower gets a plant that remains below the railing. Someone in a northern climate squeezes two season crops inside a window that permits barely one photoperiod plant. A first-time grower learns the whole cycle in less than three months instead of six, and gets to make the second attempt sooner. None of those advantages needs a heavier harvest to be worth it.

Practicalities

Turbo Autoflower Seeds dispatches every order in plain packaging, with the original seed packs sealed inside and no indication of the contents on the outer parcel. Orders to the United States are not accepted, as seed import is not permitted there. Seed laws vary widely by country, and in many places buying seeds is permitted while germinating them is not; checking the rules in your own jurisdiction is the buyer’s job, and nothing in this article is legal advice.