Salvia leucantha the Mexican Bush Sage is listed as one of the top ten Texas plants one of mine too I absolutely love the all purple variety that is in the circle & driveway. The bicolored variety with white corollas & purple calyx, which is also in the circle, is just as good but I was slightly put off it by the description of the flowers from an acquaintance. She thought it looked like the parasitic wasp larvae on tobacco horn worms!
http://aggie-horticulture.tamu.edu/galveston/beneficials/beneficial-04_braconid_wasp_on_hornworm.htm
Above the bicolor in the circle after 10 years has become 7ft tall & wide. Self seeding annuals, bulbs & yarrow take up this space in the spring.
Right & below with the deciduous Holly
Ilex verticillata 'Winter Red' on the driveway.
Right with Lantana 'Miss Huff' and the Mexican Sunflower (
Tithonia 'Torch') now 8ft tall, from seed this year, amazing.
Below with Miss Huff; Salvia 'Indigo Spires' & the Catmint (
Nepeta 'Six Hills Giant') which the Chicago Botanic Garden lists as the archetypal catmint.