Please Explain: Flowers

Today is the first day of spring, and the first buds and flowers are starting to appear. Here to explain the diversity and scientific complexity of flowers and how to cultivate flower gardens are Dr. Amy Litt, Director of Plant Genomics and Cullman Curator at the New York Botanical Garden, and Kristin M. Schleiter, Curator of Herbaceous Collections and Outdoor Gardens, at the New York Botanical Garden.