Hesperaloe parvifolia, Red Yucca, is a member of the Agave family. This native Texas plant is not really a yucca and the blooms are really a coral rose color.

This being said, it is still a wonderful plant for Parker County gardens. Propagate by dividing the rhizomes and offsets. They can also be started from ripe seeds in the fall. 

You can find more information about Red Yucca and other shrubs that do well in Parker County in the real dirt A Gardening Handbook for Parker County