As plants approach harvest some growers lower humidity down below 40 or even less to force cannabis buds to produce more resin though i ve seen that can majorly stress some plants so that technique should be used with caution.
Grow room humidity flowering.
Humidity is key for cannabis plant growth and for each stage of your grow there is an optimal grow room humidity level.
Once the lights are no longer on in the grow room the temperature decreases and extracting a lot of hot air is unnecessary which usually is the cause of humidity increases.
Ideal grow room temperature and humidity varies depending on the stage of plant life.
Cloning requires higher temperature and humidity than vegetative growth and flowering plants have different.
I m into my second week of flowering and my temp is seventy six and my humidity is fifty four percent.
Humidity really only becomes a problem during flowering if you have really high humidity and really thick buds say above seventy five.
Leading marijuana growers say beginners should look to achieve the following humidity levels in their grow room.
Naturally this is determined by the length of the marijuana plant s life cycle.
Ideal humidity levels vary based on strain season geographic location and whether you grow in or outdoors.
So it s important to create the right humidity in your grow room.
You can start growing with a humidity of around 70 and go down by 5 every week until you get to a.
Let s imagine the temperature in your grow room is 30 c 86 f with a relative humidity rh of 33.
Nourish your plant with water once the lights are on that way they will evaporate most of the water throughout the day.
They open their pores respire co2 and grow quickly.
Final results of an indoor grow are greatly influenced by the way growers keep in control of parameters that influence their plants growth.
Ideally the relative humidity of your grow room should be lowered to around 40 50 at the beginning of the flowering stage.
By setting your grow room to the right humidity level your plants flourish.
Personally i think people make to much of an issue about humidity.
I use a dehumidifier in my grow room.
Once relative humidity levels reach over 100 the surplus of water can no longer be held by the air and will condensate into water droplets such as fog morning dew or rain.