Botanical name: Lobularia maritima
Common name: Sweet alyssum
USDA zones: All zones can plant alyssum
Water requirements: Average water needs, but do not overwater
Light requirements: Full to part sun
Mature size: 8 to 12 inches tall
Benefits and tolerances: Attractive to butterflies, birds and bees
Seasonal interest: Nonstop winter blooming in warmer climates; spring and summer blooming in cooler climates
When to plant: If you live in a warm climate, plant in fall or winter; cooler climates, plant in spring.