I would like to add that you "Certainly" can get more than 20 grams from an autoflower. I have been growing for about a year and a half, Auto Heavy Bud in airpots, Seeds were produced with colloidal silver from my first grow from breeders' seeds. Fox Farm soil, AF nutrients. Lights on 24/0. Only reason I weighed one was I am in an illegal / decriminalized state and I wanted to make sure I was staying at a misdemeanor level. I dry individual branches, cutting next to the first bud, there were 13 weighed units from the plant, so there is a little more weight than strictly bud. Wet 528 grams / 18.6 ounces. Dried after 3 weeks, 105.6 grams / 3.72 ounces. This was an exceptionally tall plant, almost 7 feet tall. Most of my plants are 4 - 5 feet tall.