Phlox drummondii is an annual phlox that is native to the grasslands of central and eastern Texas. It typically grows to 6 to 9 inches tall. It has fragrant, trumpet-shaped, rose-red flowers that appear in clusters typically from May to early July, though the plants decline significantly as the heat of summer sets in, so they may not bloom here that late into summer. Cultivars come in varying shades of pink, red, lavender, purple, buff, and white. Flowers often have a different colored eye. It might be a lovely choice to seed in with short grass meadows, along with flax and annual coreopsis.
Best grown in loose, medium moisture, well-drained soils in full sun to part shade. According to the Lady Bird Johnson Wildflower Center, it has a low water requirement, but that is probably when it is growing in soil, not a container. It does grow at the edges of woods, and so may appreciate part afternoon shade in our climate. Pinch main stems of young plants to stimulate branching. Deadhead spent flowers promptly to extend bloom.