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 to Harvest Green Beans. Generally, pole beans should be ready to harvest from 50 â 60 days from the time the seedlings sprout, and bush beans should be ready in 50 â 55 days. The maturity time will depend greatly on what variety you are growing.