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when autoflower start to flower

Just like traditional strains, autoflower plants also follow the specific growth stages but only for a shorter time. Instead of waiting for almost a year before the harvest, in a span of two to three months, the autoflower marijuana plants are healthy and ready. That is why many growers are encouraged to grow autoflowers even when they cost higher than the traditional ones. Growing autoflower strains is not different from growing all other strains available. It still needs the same care, attention, and nutrients. It is in the knowledge of the time frame of the growth stage that will make all the difference. Thus, the first step on how to tell when autoflower is flowering is when a grower knows the autoflower growing process.

Before a grower knows how to tell when an autoflower is flowering, one must be an expert in knowing the basic life stages and marijuana plant proper care and attention. With those things combined, the grower will have an easy way to tell when autoflower is flowering. It might be a little discouraging when failing the first time, but even pro growers started at the bottom without knowing all the basics. So, the beginner grower must be open to multiple mistakes and strive to learn more through researching and seeking help if possible.

Life growth Stages of an Autoflower

Before learning how to tell when autoflower is flowering, a grower must first grow autoflower seeds. The first part is generally called germination in the field of agriculture. To get the best yield possible, make sure the ones planted are of excellent quality. Buying seeds through a legit distributor will help lessen the anxiety of getting bad and damaged seeds. There are different ways to germinate the seed.

One easy way is to directly plant the seeds into the nutrient-filled soil and let them grow there. This is the most convenient thing to do that works all the time. However, some growers also choose to soak the seeds first in water for almost twenty-four hours. After soaking, the seeds are moved on a wet paper towel and are stocked in a locked plastic bag for one to two days until the roots start to grow and plants are ready for planting.

Two weeks have passed, and the plant will grow more leaves, though they are still very fragile and sensitive. This is also a good time to start giving nutrients, especially if the soil lacks the pre-made natural nutrients. Adjust the lights, especially when no specific improvements on the plant’s growth. Once the grower reaches this part, the ways on how to tell when autoflower is flowering are getting nearer.

However, their yields aren’t as spectacular as those obtained from photoperiod giants, but, the trade-off for brevity makes the decision worthwhile for most growers.

Germination usually takes 1–3 days. During this time, your seeds will activate and send a root down into the soil and a shoot above the surface. To begin the germination process, you’ll need to prepare a suitable soil mix. Autoflowers don’t need as much nutrients as photoperiod varieties and prefer light and airy soil.


Autoflowering strains typically move from seed to harvest in 8–10 weeks. However, some varieties can take up to 12 weeks to fully mature. Strains such as Bubble Kush Automatic and Quick One fall towards the faster end of the spectrum, whereas varieties like Royal Creamatic and Royal Haze Automatic take a few more weeks to ready their buds for harvest.

Because of this unique trait, outdoor growers can achieve multiple harvests during a single growing season. By germinating seeds week after week in early spring, you can theoretically rake in your first harvest after

Follow the fail-safe week-by-week grow guide below for a quick and easy route to harvest time. We cover all of the parameters and variables you need to consider—at the correct times—to ensure your plants remain healthy, vigorous, and productive.

There are many reasons why a grower would grow autoflowers under 12 hours even if autoflower plants do best under 18 to 24 hours of light. And here are the most common reasons:

So the most popular light cycles for autoflowering plants are growing under 12/12 from the start or switching from 24/0 to 12/12 when the autoflower flowering phase starts.

Why use 12 hour light cycle?

First of all I need to say that you can absolutely grow autoflowers on a 12/12 light schedule and they will produce great buds but because those plants will receive less light then their yield will be smaller than if you compare them with plants that are grown under 20/4 or even 24/0 light cycle.

As you can see then there are quite a few reasons when you might need to grow autos under 12 hours of light but this practice also has some drawback.

And there are also some more exotic light schedules like 14/10, 14/8 13/11 (light/dark) that are used of regular photo-sensitive plants and where autoflower have been grown. But I do not see the advantage in these schedules as they don’t produce more buds or if they do then the difference is usually miniscule.