Citronella Mosquito Plant - Pelargonium 'citrosum - 4” Pot Pelargonium 'citrosum' is a perennial subshrub with fragrant leaves that are reminiscent of citronella. Pelargonium 'citrosum' A member of the geranium family, mosquito plant carries the fragrance of citronella in its foliage. When a leaf is crushed and rubbed on the skin, it smells wonderful and helps naturally repel mosquitoes. (The plant itself does not act as a deterrent to the pests.) Though growing mosquito plant is not as effective as using bottled repellents, mosquito plant works gently, and when you grow it in your garden, it is always on hand. Plants owe their medium green texture to the lacy leaves. Growing upright to 2 to 3 feet in height, they can be used as a summer border or one of several contrasting textures in a garden composition or a large mixed container. It is claimed that Pelargonium 'Citriodorum' may be a genetic bonding of the African geranium with genes from cymbopogon grass, but that claim has also been proven false. The citronella geranium is not to be confused with others that are also called "mosquito plant", nor with the group of plants also known as citronella grass, or with Citronella mucronata (Chilean Citronella). Pelargonium 'citrosum' is hardy to USDA Zone 10-11.