is sweet alyssum a perennial
Harvest Summerjun jun Uses, Lore, Origins, and Othâ¢ Sweet Alyssum is a perennial which is most commonly grown as a hardy annual in the North East. The plant will flower in purple, pink, cream, and peach tones.These plants grow from 6 inches to a foot.pr jul aug oct vase. Care â¢ Sweet Alyssum is a perennial which is most commonly grown as a hardy annaugfor flowers to continue flowers are very fragrant and will last from early spring to late fall, but will often do poorly in the hot summer heat. oct Care Harvest Start indoors the third week in February.