They absolutely do! Various universities and government agencies like NASA have used LED Grow lights to grow a variety of flowering, fruit bearing plants and leafy greens. Many other indoor growers and hobbyists have documented their indoor grow with LED grow lights on the internet! Follow our indoor growing tips to help produce optimal growth and yield. Below you will find more detailed information about the vegetative growth stage of a plant’s growth cycle. For optimal growth and yield you must use your LED grow light properly and follow best growing practices. The biggest mistakes people make with LEDs are overwatering, using too much nutrients, not having enough light and not placing the light at the proper distance. If you do not provide your working area with enough light coverage, you can expect less than robust growth. Similarly, incorrect light placement will not have optimal results. Placing a light too close will stunt growth, too far will cause stretching. Follow the recommended coverage areas listed on the Details Page of each light for optimal light penetration and coverage. Keep in mind that there are many variables to indoor growing, so you may want to add or remove some light depending on your own specifics.