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.
It eliminates the need for a timer or the need to wait until autumn for the marijuana plant to start flowering and it will grow consistently well and finish under 24 hours of light, from germination to harvest, in eight weeks to 10 weeks. Autoflowering cannabis plants altogether do away with a vegetative growth stage.