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.
When growing outdoors, initiation of flowering in short-day plants is more difficult to control than with autoflowers. Another concern is the overall yield of autoflowering plants which with some dwarf strains can be a half ounce per plant. The last concern with autoflowering cannabis is the chance of buying genetics that do not actually automatically flower regardless of photoperiod. Most of the autoflowering seeds available in the market are feminised.