How to Reduce Humidity in Your Cannabis Grow Room

The best cannabis plants need specific environment conditions in order to flourish. Humidity, which is key to cannabis plants‘ success, must be monitored and controlled. Your grow area must be controlled for cannabis cultivation. Here’s how to control humidity effectively and why it is so important.

Why is humidity control important?

Humidity describes the moisture content of the air. A cannabis grow room’s humidity is crucial for their growth and development. A high humidity level can make your crop susceptible to mildew and mold. If the humidity drops too much, the plants can dry out and eventually die. For cannabis plants at the vegetative stage, humidity should range from 40-60%. The optimal humidity levels for the flowering stage should range from 40 to 50%. The humidity can be controlled to make sure your cannabis plants stay healthy and reach their maximum potential.

How do I control humidity inside my cannabis grow room?

There are many methods to reduce humidity levels in your grow space. Here are some ways you can control humidity inside your grow room. The most common way to regulate humidity in a cannabis-growing room is with dehumidifiers. The dehumidifiers remove moisture from the air and prevent mold or mildew growth. Choose a dehumidifier that fits the dimensions of your grow space when you are looking for one.

Proper ventilation:

Is also important in humidity control. The air circulator helps prevent the accumulation of stagnant air. It also distributes humidity evenly in the space. The installation of exhaust fans, intake fan, or oscillating fans will help maintain proper air flow levels and humidity.

Air conditioning:

You can use air conditioning to control the humidity and temperature in your greenhouse. Controlling the temperature can help you control humidity. Aer conditioning, however, can be very expensive and not necessary in every room.


A humidifier is a device that adds moisture to the atmosphere if humidity levels fall too low. Over-humidification can result in mold or mildew growth.

The grow room must be sealed:

You want to prevent the outside humidity from getting into your grow space. By doing this, humidity will remain constant and in the right range.

For the success and health of your cannabis plants, humidity control is vital. A combination of dehumidifiers with ventilation, air conditioner, humidifiers and seals can be used to maintain the right humidity levels so your plants flourish. If you have the right humidity control, your plants will grow strong, high-yielding cannabis.