Citronella Grass (Cymbopogon nardus)

Citronella grass (Cymbopogon nardus) is an aromatic perennial grass in the Poaceae family. The Royal Horticultural Society identifies the species as citronella grass and describes Cymbopogon grasses as sturdy, tufted evergreens with linear leaves and essential oils used in culinary, medicinal, and cosmetic products ([RHS plant profile](https://www.rhs.org.uk/plants/109019/cymbopogon-nardus/details)). ## Planting Use citronella grass where its upright, fine-textured foliage can form a visible clump. The RHS profile does not give a species-specific size range, soil requirement, planting position, or hardiness rating, so allow room for the recorded mature size and confirm winter performance for the local climate before planting it outdoors. ## Foliage and Uses The genus description supports aromatic foliage and a tufted growth habit. Essential-oil use is not the same as evidence that a plant reliably repels mosquitoes; choose this grass for its foliage and scent rather than relying on it as pest control. ## Maintenance The RHS profile does not specify a pruning schedule. Remove dead or damaged leaves to keep the clump tidy, and check local growing guidance before deciding whether to leave it outdoors through winter or move a container to shelter.