Perennial are plants that continue their growth cycle from year to year from the same rootstock. In Texas, long dry, hot summers mean that conditions are not suitable for all perennial plants, but some perennials do grow well in Texas conditions. The key attribute of a perennial plant that allows the plant to flourish in Texas conditions is the ability to withstand periods of drought.
A number of perennial plants grow well in West Texas, which includes the areas around Lubbock, Abilene, El Paso and San Angelo. These include autumn sage, a plant that produces white, pink or red flowers, and is native to Texas. Autumn sage flowers from spring through to fall, and the plants grow to a height of 3 feet. Lantana is another plant native to Texas that grows well in West Texas and flowers in spring through fall.
The Texas Panhandle region in the extreme north of the state includes the area around Amarillo. Perennials suited for gardens in this region include Hinckley's columbine, a Texas native plant that grows in full or partial shade conditions and produces yellow blooms in spring. Other perennials grown in gardens in the Texas Panhandle include Texas natives such as baby sun coreopsis, which produces yellow and orange flowers in late spring and summer, and Indian blanket, another perennial native to the state, which blooms from spring to fall producing reddish-yellow flowers.
South Texas encompasses the areas around Laredo, Del Rio, Brownsville and Corpus Christi. Mealy cup sage, a Texas native perennial producing blue, white and purple flowers grows well in the gardens of the region. Mealy cup sage grows in full sunshine and flowers bloom in spring, summer and fall. Pavonia, which produces pink flowers from spring through fall, is another Texas native perennial growing in the gardens of South Texas. It grows in either shade or full sunlight conditions.
Firebrush, blue plumbago and cigar plant are all perennials grown in East Texas, an area that includes Houston, Texarkana, Nacogdoches and Tyler. Firebrush produces reddish-orange flowers in summer and fall and grows in full sunshine. Blue plumbago is another perennial that produces its blue and white flowers in summer and fall and grows in either full sunshine or in the shade, as can the cigar plant, which also blooms in summer and fall.
The Central Texas region includes Austin, Waco and San Antonio. Mexican sage, Mexican oregano and the Texas native white rain lily all grow well in this region. Mexican sage produces blue flowers in spring through fall and likes growing in direct sunlight. Mexican oregano produces pink flowers in the summer, while the white rain lily grows in either sunlight or shade, and produces white flowers in the summer.
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