Botanist Yin Kaipu and modern-day plant hunter Dan Hinkley stumble upon a roadside garden and find a treasure trove of famous flowers in their native birthplace. To see NOVA's story about the origin of flowering plants, watch "First Flower" on PBS on April 17 at 8 p.m.

Video podcast narrated by Melissa Salpietra. "First Flower" excerpt was produced by Doug Hamilton. NOVA is produced by WGBH in Boston. Funding for NOVA is provided by David H. Koch, the Howard Hughes Medical Institute, the Corporation for Public Broadcasting, and public television viewers.

To learn more, visit http://www.pbs.org/nova/flower