High-yielding autoflowers can even produce as much as 160 grams per plant. Indoor grow yield Indoor yields tend to be lower on average due to the more compact surroundings. You can expect an average of between 10 and 60 grams indoors, with super strains producing far more. It all depends on the setup. Outdoor grow yield. Small autoflower yield. Regular autoflowering plants are usually small and will yield somewhere from 10 to 50 grams per plant. But there are some exceptions that can yield up to 100 grams a plant but that goes into the SUPER autoflower territory. Basically, if a strain flowers really fast and stays short you can't expect more than 20 or 30 grams from it.