Alyssum

Sweet alyssum blooms continuously from spring to fall, lending its sweet scent to the garden air. It's best grown as an annual; although perennial in USDA zones 5 and warmer, plants become leggy in the second year. Basket of Gold alyssum is a spring-blooming perennial, hardy in USDA zones 4–7. Both types attract beneficial insects, are drought tolerant, and deer resistant.