The large purple “puff balls” flowers are Allium plants, a member of the onion family. It is a perennial that grows from a bulb and blooms in spring. The globe-shaped flower heads are comprised of a cluster of florets up to 5 inches in diameter atop 3 foot stems. A fun addition to our fence line planter boxes.
Once the florets have died back the remaining cluster still makes for an interesting addition to cut flower arrangements.