Dalea greggii (Trailing Indigo Bush) - This is a fast-growing evergreen subshrub groundcover that can grow to 3 feet wide in 1 1/2 years and ultimately reaches up to 1-2 feet tall by 4-6 feet wide. Delicate pinnately compound leaves have quarter inch long silvery gray-green leaflets and tiny, rose-lavender to purple flowers appear from late winter or early spring into early summer.
Plant in full sun in a well-drained soil and irrigate only occasionally to not at all in coastal gardens. It tolerates heat, frost, rabbit predation and is quite drought tolerant once established and cold hardy to 20-25 degrees F., possibly lower. This groundcover is primarily grown chiefly for its attractive silvery foliage, but the purple blooms that cover the plant in summer and attractive as well. It is a good ground cover for rocky slopes and the trailing branches will root at leaf nodes so is good for erosion control on slopes and banks.
Dalea greggii is native to southwest US and northern Mexico at 2000'-4500' elevation. The genus is named for the English physician. Apothecary and botanist Samuel Dale (1659-1739) and the specific epithet honors Josiah Gregg, (1806-1850) a naturalist who traveled through Texas in the 1840s taking note of the geology, plants and the people. In 1848 he joined a botanical expedition to western Mexico and California. Twenty-three species of plants are named in his honor. Other common names include Gregg Dalea, Gregg's Prairie Clover and Indigo Bush. Several of the shrubby species previously in the genus Dalea are now included in Psorothamnus.
We originally purchased our propagation stock of this nice little plant from Monrovia Nursery and grew it from 2001 until 2005.
The information about Dalea greggii displayed on this web page is based on our research conducted in the nursery's horticultural library and from reliable online resources. We also include observations made about it as it grows in our nursery gardens and other gardens we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments we receive from others and welcome hearing from anyone with additional information, particularly if they can share cultural information that would aid others in growing this plant. |