The best way to harvest and dry seeds involves first waiting for the plant to reach its full maturity and then keeping the seeds in a dry, cool area. Find out how it’s done in this free video of gardening tips. Expert: Oscar Carmona Bio: Oscar Carmona owns Healing Grounds Nursery, located in Santa Barbara, California, where he has been involved in sustainable food production for the past 30 years. Filmmaker: Alfredo Rodriguez Series Description: If you feel your green thumb could stand to get a little greener, these useful gardening tips will help you learn how to plant and care for your favorite plants like a real pro. An experienced gardening professional explains and demonstrates in this free video series.