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.
Here at HowtoGrowMarijuana.com we get lots of questions about autoflowering cannabis seed production. Lots of growers can see the benefits of autoflowering strains but also see the need to grow them on a fairly large scale to achieve substantial crops. The truth is that there is no great secret behind it. Breeding autos for seed production is the same as with regular cannabis plants.