Salvia, or scarlet sage, is an annual flower best known for its spiky form and bright color that is dependable in any climate and adaptable to full sun or partial shade with equal ease. Salvia comes in brilliant red, creamy white, rose-colored, and purplish variants. Common name: scarlet sage Color: Salvia comes in brilliant red, creamy white, rose-colored, and purplish variants. Bloom time: Blooms summer to frost Height: Depending upon variety, salvia will grow from eight inches to three feet tall. Difficulty level: Easy Planting & Care Salvia are often grown from seeds. Salvia can be directly seeded into your flower garden, or seeded indoors for transplanting later. For earlier blooms, start indoors six to eight weeks before the last frost.