Dallas, Texas, experiences a humid subtropical climate, which means cool winters, hot summers and moderate temperatures in the fall and spring. Dallas lies within United States Department of Agriculture (USDA) Hardiness Zone 8a. Dallas gardeners should select flowering plants according to appropriate zone, bloom time, flower color and general culture. Many flowers grow well in Dallas gardens.
Butterfly daisies (Amblyolepis setigera), also called huisache daisies and honey daisies, belong to the aster family (Asteraceae). These daisies reach 6 to 15 inches in height. This fragrant annual blooms from March through June, featuring large, yellow petals surrounding yellow-orange to orange center disks. The butterfly daisy prefers well-drained, loamy or sandy soils that receive part shade. Butterfly daisies work well in wildflower meadows and butterfly gardens.
Drummond phlox (Phlox drummondii), a member of the Polemoniaceae plant family, features pink, red, purple or white flowers that bloom from March through June. This showy annual reaches from 6 to 20 inches in height. The Drummond phlox prefers acidic, sandy soils in partially shady to fully sunny locations. Dallas gardeners often plant this phlox variety in containers, borders, wildflower gardens and perennial flowerbeds.
The purple coneflower (Echinacea purpurea), a perennial member of the aster family (Asteraceae), reaches between 2 and 5 feet in height. This wildflower blooms from April through September, featuring lavender or pink petals surrounding spiny, brown centers. Purple coneflowers prefer sandy, well-drained soils in partial to full sun positions. Dallas gardeners often plant purple coneflowers in prairie gardens, butterfly gardens or bird gardens.
Cardinal flowers (Lobelia cardinalis) belong to the bellflower family (Campanulaceae) and typically thrive in moist, humus-like soils. This showy perennial features fragrant flower spikes covered in red, tubular flowers. Cardinal flowers bloom from May through October. Dallas gardeners often use the cardinal flower in hummingbird gardens, wildflower meadows and woodland gardens.
Tansy asters (Machaeranthera tanacetifolia), sometimes called Tahoka daisies, form clumps reaching 3 feet in both height and spread. This annual plant features fern-like, green leaves. Flowers bloom from May through October, featuring lavender to bright purple petals surrounding a yellow central disk. This aster family member (Asteraceae) prefers well-drained rocky or sandy soils in partially shady to fully sunny positions. Tansy asters work well in wildflower meadows, containers and rock gardens.
Texas bluebells (Eustoma exaltatum), also called prairie gentians, appear in Texas fields and prairies from June through September. This Gentianaceae plant family member blooms showy, bell-shaped flowers with yellow, blue, purple, pink or white petals. A perennial plant in Dallas, Texas, this bluebell variety reaches from 1 to 3 feet in height. This wildflower prefers moist, loamy or sandy soils that receive full sun. Texas bluebells work well in wildflower meadows and perennial flowerbeds.