Citronella plants, (Pelargonium citronellum) are perennial in zones 9, 10, and 11, but can be grown as patio plants or annuals in cooler climates throughout the United States. These plants only grow about 2 to 3 feet tall and wide so they are perfect for pots. They have good drought tolerance, so you won’t need to water these plants every day. In fact, these plants are very easy to grow. Citronella plants prefer full or part sunlight conditions and well-drained soil. Deer avoid these citrus scented plants.
Benefits of the Citronella Plant
One of the most well-known uses of citronella plants is as a mosquito repellent. It functions well in this capacity whether placed around your living area (“fluff” it up when you go outside) or rubbed on skin or made into an oil or spray. Citronella also repels other bugs like flies.
Citronella is safe for bees, and won’t repel spiders or other useful insects. Hummingbirds and butterflies don’t mind citronella either. This plant just repels the biting insects we hate!
Citronella can be used as a culinary herb. It is used in teas and desserts. Scented geraniums can also be used to flavor cakes, butter, jellies, ice cream and other dishes including meat and salad.
Dry the leaves for use as a potpourri.
Add scent and texture to a floral arrangement with citronella stems and leaves.
Pelargonium species are native to Africa where they have been used to treat intestinal, kidney, and respiratory issues, wounds, fevers, and more health conditions.
Pelargonium oil is also used as a relaxant in aromatherapy.
Pelargonium citronellum have an uplifting, citrus fragrance that promotes positivity and improved mood.
Citronella plants are attractive in pots and in the landscape. They have pretty and unique foliage that is rich in texture and pretty pink blooms that bloom throughout summer.
source : https://www.plantingtree.com/blogs/gardening/benefits-of-citronella