Hey Growmie,
The three stages are: the removal of the large fan leaves, trimming, or removing the remaining leaves in close proximity to the flowers. Aside from these three steps, which address the physical removal of portions of the plant, other crucial stages of the harvest process include the drying, sorting, and curing. I personally like to cut the plant from the base and let it dry as a whole instead of cutting the branches to make sure it isn't drying too fast. The ideal conditions for drying cannabis are temperatures between 65-75 degrees with humidity levels around 45-55%. If possible, drying should take place in complete darkness as UV light from the sun or artificial lights could damage some of the cannabinoids or terpenes in the flowers. Generally speaking, it should take roughly 7-10 days to dry the cannabis plants. A grower will know the drying process is complete when he or she can bend the stem of a dried plant and the stem snaps. The curing process is the grand finale of the harvest process and is done after all trimming has been completed. During the curing process, the flowers continue to dry very slowly and this enriches the flowers’ flavor. Containers used for the curing process should be stored in a cool, dark place where they can be examined daily. For the first week or two, the containers should be opened (“burped”) once or twice a day. This lets out some of the built-up humidity and allows some fresh air in. After the first week or so, the containers can be opened less frequently (anywhere from once a day to once every other day). After a couple of months, the curing process is complete and the cannabis flowers should be at their peak flavor. A proper cure can prolong the shelf life (potency, flavors, and odors) of the cannabis flowers.
Hopefully, this was helpful and remember ..."Happy Growing" and "Free your mind one puff at a time".