Grow salvia (Salvia farinacea), also known as mealy-cup sage, as an annual plant in herb and flower gardens. The plant grows to a height of 2 feet, depending on variety, and has upright blue, violet or white flower spikes that add textural interest, especially when planted in a border. The plant flowers from early spring to late fall and requires little care. It likes moist, well-drained soil and will thrive in part to full sun. Salvia is deer resistant and non-invasive, although it does self-sow.
Fill seed starter trays with potting soil.
Place salvia seeds in the trays, 1 or 2 seeds per cell. Cover with a light layer (1/8 inch) of potting soil.
Spray soil with water from a mister or spray bottle until moistened, but not soaking. Water every 2 days or more to keep soil evenly moist.
Cover the seed tray with plastic wrap and set in a warm, sunny location. Salvia seeds need temperatures between 65 and 70 degrees F. to germinate, so keep them warm. Remove the plastic film once seedlings emerge from the soil.
Plant seedlings when they are 2 to 3 inches tall and all danger of frost is passed.