Trailing Rosemary makes our best plants for North Texas list. Our favorite part about this plant is the soft little blue blooms (somewhat purplish) this plant produces. It blooms sporadically throughout the year and will bloom in North Texas during our winter months. If you like a nice pop of color in your landscape, this plant is a great choice. As a bonus, it also gives off an excellent rosemary scent, and you can, of course, cook with it.