Allium
Alliums, which include onions, leeks, and ornamental flowering varieties, release a sulfur-based scent that mosquitoes and many garden pests hate. These globe-shaped flowers add a dramatic touch to your garden while acting as a pest deterrent. Plant them in full sun with well-drained soil, and they’ll return year after year. Their scent is strongest near the base, where most of the oils concentrate. Alliums not only repel mosquitoes but also deter aphids, carrot flies, and other garden nuisances. With minimal maintenance and big visual impact, these plants are ideal for gardeners who want both style and substance.