Lobularia maritima syn. Alyssum maritimum, common name sweet alyssum or sweet alison, also commonly referred to as just alyssum is a species of low-growing flowering plant in the family Brassicaceae.
Sweet Alyssum is a delicate carpet of tiny flowers with a subtle, sweet scent. The low-growing foliage is covered by flowers for much of the growing season. Sweet Alyssum is very easy to grow, from plant or seed. It is a cool season flower that can be set out in early spring. In frost-free climates, Sweet Alyssum can also be grown throughout the fall and winter. Most varieties will fade in the heat but bloom again in the fall.