Autoflower strains are those cannabis strains that start to flower automatically when the physiology of the plants are ready, regardless of the amount of sun/grow light hours they get. Temperature is more important than light cycle. Regular autoflowering plants are small, yielding between 10 and 50 grams per plant. You cannot expect a strain with a fast and short flowering time to produce more than 30 grams but super autoflowers can yield 200-300 grams if you give it the perfect environment.
Auto Flowering plants are immensely popular among new and seasoned growers due to their short lifespan, between 7 and 13 weeks from seed to harvest. These are great for indoor grows with limited space.