Leslie F. Halleck is a Certified Professional Horticulturist (ASHS), consultant, and horticulture instructor for UCLA Extension. Halleck is also the author of several books, including "Gardening Under Lights: The Complete Guide for Indoor Growers", "Plant Parenting: Easy Ways to Make More Houseplants, Vegetables, and Flowers", and "Tiny Plants: Discover the joys of growing and collecting itty bitty houseplants".