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.
The number of days to harvest can vary depending on the type of pumpkins that you're growing. In general, most pumpkins take about 100 days from seed to harvest. Small, intermediate and large standard orange types usually take 100 to 110 days to harvest, while jumbo pumpkin varieties take 120 days.