It's noted for its appeal to cats, but this low-maintenance plant has a more practical use—it repels mosquitoes. Aromatic gray-green leaves are set against two-lipped flowers in violet to lilac blue. Easy-to-grow 'Walker's Low' is drought resistant and tolerates rocky soil, producing trumpet-shaped, deep violet and lilac-blue flowers from April to September.
Grows 24 to 30 inches tall and 30 to 36 inches wide in USDA Hardiness Zones
4 to 8; sun to part shade.