There are a lot of good reasons to plant salvia. The blooms are plentiful, fragrant, long-lasting and will attract hummingbirds and butterflies to the landscape. They're a sturdy, low-maintenance perennial plant that will do well when the weather turns hot and dry. However, if you live where the mercury drops below freezing during the winter, it will need to be replanted each year. You can also plant salvia seeds in containers.
Prepare the soil to plant salvia in February. A sunny spot is best, but if you live in a hot climate, plant salvia where it will get shade during the hottest part of the day. Remove any weeds with a hoe, and work a shovelful of compost into the top of the soil.
Use the corner of the hoe to make a shallow trench, and plant the salvia seeds in the trench about 12 to 18 inches apart. The soil should be kept moist initially, so until the salvia seedlings are established, water the soil lightly every day. Once the saliva is a few inches tall, decrease watering to twice a week.
Feed salvia every other week using an all-purpose, water-soluble fertilizer. Pinch off spent salvia blooms to encourage the plant to continue blooming throughout the season.