Red salvia (Salvia henryi Gray), commonly known as crimson sage or crimson plant, is a perennial herb, native the American Southwest. In nature, you will see the crimson plant growing in rocky canyons or at the base of cliffs. Blooming in red, tubular flowers, this member of the mint family blooms from April through September in its USDA hardiness zone, 8. Grow a low-maintenance crimson plant in the rock garden or in borders.
Grow the crimson plant in full sun.
Allow the soil to dry to a depth of 3 inches before watering. Water deeply and allow the soil to dry again.
Fertilize the crimson plant in early spring with a 10-10-10 formula at the rate suggested on the package. Always water after fertilizing.