Humidity means the amount of water vapor present in the air and in a growing area or room this should be kept at a minimum. There are times when the ganja plants will need more humidity than others, such as new seedlings that are in a delicate stage of growth and in order for the soil not to dry out the humidity in the room should be kept at approximately 80 percent humidity. After the seedling stage most growers will keep the humidity level in the growing area between 60 and 80 percent, which helps to increase the growth rate, this however must be watched carefully. When there is high humidity, such as 85 percent and over it can be a risk to the buds on the plants, which they might get bud mold. There is also danger of clogged pores in the leaves due to the lack of the evaporation ability and this can lead to disease and other growth problems.