Catnip is a natural mosquito repellent. In August entomologists at Iowa State University reported to the American Chemical Society that catnip is ten times more effective than DEET, the chemical found in most commercial insect repellents. Good to know!
Flossflowers or Ageratum emits a smell which mosquitos find particularly offensive. It secretes coumarin, which is widely used in commercial mosquito repellent. Ageratum is a perenial plant which reaches heights of 8-18” & has blue flowers, although there are varieties with pink, white & violet blooms. This plant will thrive in full or part sun & doesn't require rich soil. Good in rock gardens.Leaves can be crushed to increase odor, its not advisable to rub directly on the skin.
mosquito-repelling potted plants. Catnip is said to be 10 times more effective than DEET in repelling mosquitoes. Citronella, or West Indian lemongrass, is a tall plant and the source for citronella oil. Cascading Geranium, another bug repelling plant, will cascade over its pot and add a delicate floral scent to your potagerie.