Original sweet alyssum varieties will reseed. Newer hybrid varieties are sterile and will not reseed. Below are some of the modern cultivars of this plant. ‘Snow Princess’: A heat- and cold-tolerant hybrid, this variety has profuse bunches of white flowers.

Do alyssum spread?

Sweet alyssum flowers are among the most popular plants sold at garden centers in North America. Their popularity is largely due to their toughness and to the great number of blooms they produce. Because they stay short and spread sideways, Alyssum are highly versatile plants.

Is alyssum an annual or a perennial?

Sweet alyssum, Lobularia maritima, is a common annual flower plant. Lobularia maritima is a mat-forming annual or short-lived perennial native to the Mediterranean, Canary Islands and Azores, where it grows along the coast in rocky, sunny areas.