Why is it important for cannabis to control the humidity

Why do we need to control temperature and humidity when growing cannabis indoors? Is it just to make the plants more comfortable? No, these two environmental parameters directly determine the growth rate, health and final yield of the plants.

Let’s start with temperature. Do you know what is the best temperature for cannabis growth?

Cannabis likes a warm environment, with an ideal temperature between 20-25°C during the day and slightly lower at night, around 14-18°C. If the temperature is too high, over 35°C, the plant will become dry, the leaves will curl, the growth rate will slow down, and the harvest will be affected. 

Conversely, if the temperature is too low, below 15°C, the growth rate of cannabis will also be greatly slowed down, the flowering period will be prolonged, and the yield will be reduced.

Let's talk about humidity. Cannabis requires different humidity at different growth stages.

The seedling stage requires relatively high humidity, about 65-70%, which helps the leaves to unfold and the root system to develop.

During the flowering period, the humidity needs to be reduced to 40-50% to prevent mold growth. If the humidity is too high, the plant is prone to mildew, especially gray mold and powdery mildew, which not only affects the quality, but also leads to planting failure.

Tips for controlling temperature and humidity：

1. Real-time monitoring using a thermometer and hygrometer

First of all, you need a set of accurate temperature and humidity monitoring equipment. A good thermometer and hygrometer can monitor the temperature and humidity of the planting environment in real time. 

When buying, it is best to choose a device with data recording function so that you can check the environmental change trend at any time.

2. lighting and ventilation equipment

When it comes to lighting, when buying plant lights, LED grow lights are more recommended. Compared with other similar grow lights, they can reduce heat generation and avoid excessive temperatures. 

At the same time, you should also arrange the lighting time and intensity reasonably. Remember to arrange fans and exhaust fans to effectively adjust the temperature and humidity.

4. Use humidifiers and dehumidifiers

If you have sufficient funds, you can arrange for equipment such as a humidifier and a dehumidifier, and set the temperature and humidity according to actual conditions, keeping them within the appropriate range of 40%-70%.

5. Use the right soil and container

When choosing soil, choose soil with good drainage, such as perlite, vermiculite and coconut coir; choose containers with good air permeability, such as cloth planting bags, to avoid water accumulation at the roots, which may cause rot.

6. Adjusting planting density

The spacing between marijuana plants should not be too dense, as it will lead to poor air circulation, increased humidity, and easy cause of mold and pests and diseases. The appropriate planting density should be determined based on the growth characteristics of the marijuana variety.

Since its establishment in 2009, VNQ has always been at the technological forefront of smart agriculture, concentrating on creating cutting-edge plant lighting solutions for a variety of industries. We are not only a product provider, but also an explorer and pioneer in the field of smart agriculture.