Growing right next door to the Napa County Master Gardeners' office is a bright, shiny-leaved, small evergreen tree. It is always clean and fresh, with never a brown leaf or any aphids or scale on it.

LeRoy Rodgers spends plenty of time in the Florida Everglades — mainly in airboats. He works for the South Florida Water Management District. On a recent day, he eases his boat alongside a tree island ...

Ferns are weird. They're green and leafy like other forest plants, but they reproduce more like mushrooms do—by releasing clouds of spores. Many species don't require a partner for fertilization, ...