The Ideal Temperature and Humidity for Growing Cannabis

Welcome to the world of cannabis cultivation! Whether you’re a seasoned grower or just starting, finding the perfect temperature and humidity for your plants can be challenging.

But fear not – we’ve got you covered! In this post, we’ll explore everything you need to know about creating the ideal environment for your growing cannabis plants to thrive.

Get ready to take your cannabis-growing game up a notch! So sit back, light one up (if that’s your thing), and let’s dive in.

Seed Germination

The temperature and humidity for cannabis needed to ensure successful seed germination should be between 70 to 85 degrees Fahrenheit (21 to 29.5 degrees Celsius). It is with a relative humidity of around 65 to 75 percent.

While some plants can tolerate temperatures slightly outside of these ranges, maintaining a steady temperature within these limits will maximize the success rate of your seed germination.

Temperatures any higher or lower than the ideal environment will strain the seed and lead to a poor result. Too much humidity will also create a breeding ground for bacteria and mold, which can harm your upcoming crop.

A seedling heat mat and a hygrometer are excellent ways to ensure your seeds have the perfect temperature and humidity level.

Vegetative Growth

The best temperature for cannabis and humidity in the vegetative growth stage can vary depending on other factors such as strain, light availability, and the environment.

Temperatures between 72-77°F (22-25°C) and high relative humidity levels of 60-70% are ideal. While higher humidity levels may provide more humid, tropical-like conditions, they can also lead to excessive moisture.

It can encourage mold and damping off in the plants. A decrease in humidity can allow for greater transpiration and more robust growth of the cannabis plant.

However, too low of a humidity level can increase water stress and stunt your plant’s growth. The ideal temperature and humidity depend on the strain and the environment but may vary slightly for the best results.


For optimal growing conditions for cannabis during the flowering stage, the ideal temperature is about 70-75°F (21-24°C). If the temperature drops below this range, up to 62°F (17°C), it can slow the plant’s growth and reduce its yield of flowers.

The optimal relative humidity for flowering cannabis is around 40-50%. If the relative humidity is too high, the risk of bud rot increases.

If the level is too low, it can cause problems such as difficulty forming trichome resin, which sacrifices cannabinoid and terpene production.

It is best to keep the relative humidity at a moderate level to keep the plants happy. Make sure to find Trolmaster products here to ensure the best outcome in terms of yield and cannabinoid and terpene production.

Learn the Ideal Temperature and Humidity for Growing Cannabis Today

The ideal temperature and humidity for growing cannabis primarily depend on the plant’s strain. It is essential to know what type of environment your plants prefer to get the best results from them.

Temperature and humidity are key factors when it comes to cannabis growth.

By keeping temperatures stable and providing ample air circulation, you can ensure that your plants will thrive despite adverse conditions like too much or too little moisture in the atmosphere.

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