Allium giganteum features huge spherical heads densely packed with small starry lilac florets, gracefully held at the top of towering sturdy stems. Native to the Himalayan region, this heirloom variety will come back year after year to bring vertical interest to the late spring and early summer garden. Also known as giant onion, this impressive allium will look particularly striking planted in bold groups or scattered amongst grasses and low-growing hardy perennials in sunny borders and wild…
