Plant citronella in spring once all chances of frost have passed and the soil is warm. A good rule of thumb is to plant the same time you plant tomatoes.
Space citronella 18 to 24 inches apart in an area that receives partial shade and has fertile, well-drained soil.
Improve your native soil by mixing in several inches of aged compost or other rich organic matter.
Check soil moisture every few days and water when the top inch becomes dry.
For abundant blooms, feed regularly with a water-soluble plant food.
Once mature, prune citronella as necessary and enjoy the fragrant leaves and flowers in summer arrangements.