This undated image provided by Missouri Botanical Garden shows the foliage of a silverbush (Convolvulus cneorum) plant. The fast-growing, drought-tolerant evergreen is a good choice for covering ground in desert climates. (Missouri Botanical Gardens via AP)
This undated image provided by Bugwood.org shows a Silverbush (Convolvulus cneorum) plant in bloom. The fast-growing, drought-tolerant evergreen is a good choice for covering ground in desert climates. (John Ruter/University of Georgia/Bugwood.org via AP)