Alliums aren’t too picky: In most cases, alliums grow in average garden soil and need full sun and good drainage. The drainage is critical because so many of the bulbs are huge and will rot with too much moisture. Aside from that, they are easy to grow and come back year after year with almost no maintenance.

Do alliums bloom more than once?

ANSWER: Alliums usually flower just once per season. However, if you let some of the flowers develop into seed heads, alliums will self seed so new plants will return next year.

Will alliums flower again?

Alliums are bulbous perennials, Incredibly long-lived, they bloom for weeks on end, bridging the gap between spring and summer.