Q: We live just above River Road with desert vegetation. A branch of five of what I think is Yucca elata, 3 to 4 feet high, has grown up close to the street edge and my mailbox. All branches look ...

Yucca is a genus of over 40 perennial plants, shrubs, and trees. A few are grown as houseplants, including Yucca gigantea (also known as Y. guatemalensis and Y. elephantipes) and the Yucca aloifolia.