Humidity in the grow box: the optimal temperature for growing cannabis

How to harvest a rich cannabis crop with sticky and powerful buds? Experienced growers have long known the answer to this question - carefully monitor the humidity level in the grow box. It depends on how plants are resistant to mold and parasites.

Let's look at how to increase the humidity in the grow box, and what effect does it have on plant development?

Why control humidity in a grow box

Water is the nourishing power for plants. But the measure is important: excess moisture is the cause of mold and rot, lack of water makes plants lethargic and frail.

But before you adjust the water balance, you need to take into account a couple of nuances:

• If the moisture level is high, the plants absorb it through the leaves. When watering, you need to use less water;
• If there is not enough moisture, cannabis “takes” it through the roots, so you need to water the plant more often.

It is also recommended to add fertilizers to the water so that the plant receives all the necessary nutrients necessary for its growth and development.

What will happen if there is a lack of moisture in the grow box

Not knowing what humidity is needed for cannabis, you can run into a number of problems:

• powdery mildew;
• bud rot;
• yellow leaves;
• slow growth

All these problems occur due to excess or lack of moisture, and lead to the appearance of an unpleasant smell, rot, and death of the plant.

What level of moisture is optimal for plants

When growers talk about moisture, they mean the ratio of water vapor in the air relative to the maximum value at a certain temperature in the grow box. You can measure this indicator using a hygrometer.

It is also important to consider the stage of development of cannabis and its moisture requirements during these periods:

• Clones require a lot of moisture. It is necessary for the development of the root system. Optimum moisture level 65 - 70%;
• Seedlings and plants in the vegetative stage require 40-65% moisture. They develop foliage through which they absorb water from the air;
• flowering plants absorb 40-50% of moisture, and this is enough for the success of all processes.

If all indicators are normal, you will reap a rich harvest, if not, then you need to take appropriate measures.

How to increase or decrease the humidity level

Now about the main thing: how to increase the humidity in the grow box? It's simple: you can use additional devices - a humidifier or an air cooler. In a cool room, moisture is retained better and longer.

If there is too much water, install a dehumidifier and reduce the amount of water for watering plants.

You also need to improve the ventilation system: you can make an additional two or three holes in the grow box or install a fan. Thanks to them, the moisture will evaporate faster, and inside the box there will be optimal conditions for the growth and development of marijuana.

What does temperature mean for cannabis

The temperature in a marijuana grow box is important. The rate of growth and development of the plant depends on it. To measure it, you need to install a thermometer.

Now let's figure out what temperature should be in the grow box?

Experienced growers recommend keeping the temperature at +21-27C during the day, and +18-20C when the lights are off.

If the temperature level is lower, then the plant will be stressed, and it will quickly wither. In this case, you need to insulate the grow box. For example, by installing a more powerful lamp.

At high temperatures, yellow leaves will appear, and marijuana itself will dry out. An air conditioner or additional holes in the box will help to reduce the temperature.

Be aware of these nuances before you buy a marijuana grow box, and start grow one of the most popular crops in the world in the territory of the country where it is allowed.