TEMPERATURE
Purchase a highly recommended cultivation book such as the one direstly below
THroughout all stages, you should try and keep a steady temperature of approximately 65 degrees. If the temperature cooler then 50 degrees and the plant will not grow properly. If you allow the temperature the exceed 75 degrees, the plant will burn.
This site, like any other growing site, provides only the basic information on how to grow marijuana. If it is legal in your area and you plan on growing pot, I highly recommend you purchase a book such as the one in this top left corner. It will be well worth the investment.