What is the optimal level of humidity for cannabis growing?

In order to start growing in the best possible conditions, it is adamant to understand the meaning of relative air humidity. Relative air humidity levels give us information on the concentration of water vapour in the air.

It is important to realise that air humidity is closely connected to air temperature, as hot air is more humid than cold air. That's why an air conditioning unit dehumidifies and cools the air at the same time.

When air humidity levels come close to 100%, the air is not capable of retaining the excess moisture, which leads to condensation in the shape of small droplets of fog, morning dew, or rain.

For instance, if the temperature of your grow space is 30ºC, with a relative humidity of around 33-35%, and the temperature suddenly plummets to 10-12ºC, the humidity level can quickly reach 100%.

This can become a critical situation at the end of the flowering period if the 'dew point' is reached. This is a parameter that reflects the cannabis flowers' humidity level. Bad management of the relative humidity levels of your grow space, caused by abrupt temperature variations, could lead to the appearance of mould in your buds.

Read more at dinafem.org


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