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how big can autoflowers get

2) Don’t take the risk of transplanting

Autoflowers growing outdoors usually receive only 12 hours of proper sunlight, and you’re probably wondering if that’s enough. However sunlight is the most powerful light compared to artificial systems set up by humans, so autos take advantage of the situation and produce maximum yields outdoors.

As a grower, your job is to ensure that all the buds receive equal light, and that’s where LST helps a great deal. Most growers begin LST after the plants are “Topped”. Topping is another technique that involves cutting off the tip of the main stem, forcing the plant to grow more colas rather than one. Beginners can even “FIM” their plants, which is another method where you cut off only a part of the tip instead of cutting it entirely.

The pH is an important factor in determining the yields of autoflowering cannabis strains. Whether you grow hydroponically or use soil as a medium, pH is critical. Although many growers assume that the plant is suffering from nutrient deficiencies, most issues crop up only due to pH imbalance.

How does the pH dictate the yields, you ask? Well, when the pH falls below 5.5, plants cannot absorb certain nutrients like Calcium and Magnesium even if they are present at the roots. The same logic applies when the pH rises above 7. Suffice it to say that all the nutrients in the world cannot help the plant recover if the pH is not right. With an imbalance in the pH, the nutrients cannot be absorbed and the plants produce very little yields. Therefore, check the pH constantly to ensure that the plants are healthy.

Regardless of the variety, you choose, here are some final tips how to grow autoflowers in pots:

Perhaps the most important thing when choosing containers for your cannabis is size. Most growers buy autoflowering seeds because they don’t have a lot of growing space, and they don’t want enormous plants that can reach more than six feet in height. The pot size can have a major impact on the eventual height of the plant. If you choose a small container for your autoflower seed, then it will remain short as it will quickly become root bound and the resulting stress will slow the growth of the plant.

Terracotta or clay planters are more cumbersome than plastic pots, but they can be good choices because terracotta can absorb and retain excess moisture. This provides a cooling effect that will benefit the roots of your plant in the hot summer months. Small disadvantage: you could have to water more often.

Separate the plants

1.5 to 2.5 gallons is optimal for eight-week autoflowering plants. The container size is important – too small, and it will have a negative impact on your yield, too large, and you will waste soil unless you have the space to cope with a large-growing plant.

Fabric pots, also known as “Smart Pots”, are plant containers made from vegetable matter, usually coconut coir. When the roots reach the sides of the pot, they become trapped in the porous fabric and naturally trimmed by the outside air. This “air pruning” even encourages root growth and prevents ring roots (that is, they do not outgrow their pots). Another advantage of fabric pots is that their porous structure makes it almost impossible to overwater your plants. These are inexpensive, and you can easily poke holes in them. They are available in many sizes and colors. However, they are not very robust and can split, and they do not protect roots from extreme temperatures.

Next, let’s look at the different types of plant containers that are available. Any of these are fine for autoflowers. It is essential to consider the material the pot is made of – such as plastic, clay, wood, metal and even coconut fiber. Keep in mind, however, that no one container material is “best” as each has its advantages and disadvantages.

As autoflowers should not be re-potted, a container that is between 1.5 and 3 gallons should be fine. It is worth experimenting with different plant sizes to see what works best for your chosen variety. If you need your plants to remain compact, choose smaller containers; but larger pots are generally best if you want lots of vertical growth with plenty of side branches.

Your water may be fluoridated or chlorinated, or may contain other impurities that hinder healthy microbial growth in the soil. In short, if your domestic water is unsuitable for drinking, it won’t do good for your cannabis plants either. You can solve this by using reverse osmosis water.

Staking or plant support of some kind may be needed to keep your plants upright and their buds healthy.

Simply spoken, reverse osmosis is a filtration process that results in pure, ultra-filtered water. With this, you are in total control of the mineral profile of your water. This can benefit the growth of your plants and your yield.


Low-stress training (LST) is a non-destructive training technique that even beginners can use. As the name implies, it is a minimally invasive technique that doesn’t involve any major damage to plants.

A healthy and strong root system means healthy plants with great yields. Consider “smart pots”, like the RQS fabric pot, to give you an advantage in this domain. With their ability to prevent plants from becoming root bound, fabric pots are better for overall development.

Whether you are planning an indoor or an outdoor grow, make sure to start your seedlings indoors.

Autoflowers grow blazingly fast and don’t rely on light hours to enter bloom. As they make growing weed a lot more convenient, autoflowering strains have become very popular as more high-quality strains appear on the market.