Chemical Weathering. Chemical weathering takes place in almost all types of rocks. Smaller rocks are more susceptible, however, because they have a greater amount of surface area. Chemical reactions break down the bonds holding the rocks together, causing them to fall apart, forming smaller and smaller pieces.
Autos generally are ready to harvest sooner than photoperiod. Most autos are ready to harvest 65-90 days after being sprouted from seed. Some super autos have been bred to grow very big and can take up to 100 days before harvest.
At this temperature range, seeds will sprout within three to four days. The seed will germinate in a temperature range of 45 to 85 degrees Fahrenheit. Outside of the optimum temperature range, seeds may take anywhere from four to 14 days to germinate.