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Thermometer & hygrometer

The effects of cold temperatures on the indoor plant can be disastrous for the crop and the growers expected harvest. Temperatures that are in the 40’s and 50’s can be dangerous for the seedlings in their new environment.

While it is possible to cover them with plastic bags to help save them it is better to know for certain the last frost is over and the seedlings will be safe.

The seedling that is put out when the air and ground are too cool can be stunted, which means a much smaller harvest that is not as potent as it should be.Effects of Cold Temperatures

There is also the risk that the leaves of the plant will become opaque and then wilt and die, the stem can become weak from the cool temperatures, too weak to hold the plant up. Once this type of thing happens due to cold weather the cannabis plant will die.

The humidity in the enviroment is the amount of water vapor present in the air. Most growers know that humidity in excess of 85% percent increases the probability of the appearance of bud mold. The humidity is also critical during germanation when the seedlings are extremely fragile.

Humidty should be kept over 80% at this stage in the plants life to prevent the soil from drying too fast. Experimentation has shown that a relative humidity of 65% to 80% increases growth rate.
Below this level the plants develop extremely narrow and tissue paper thin leaves to try to prevent excess loss of water. Above 80% relative humidity the plant have trouble disposing of toxic chemicals through evaporation.

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