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.
Veronica--Zones 3-11. Perennial. Hardy/Tall/Stake/Attracts brids & butterflies/Deadhead to extend bloom time/After 1st frost cut back to 2 inches above soil/Root rot/Divide in spring or fall (every few years)
Snow-in-Summer (Cerastium tomentosum): Perennial groundcover for hot, sunny sites, fine-textured silver foliage topped by pure white star-shape flowers in late spring and early summer, holds up to light foot traffic, Full sun and well-drained soil, Zones: 3-7, 6-8 inches tall.