An Allium with the wow factor! This Ornamental Onion has 1-3/4 to 2" rounded clusters of light amethyst purple flowers in mid to late summer. The narrow, twisty that form a low mound. Similar in flower color and foliage to Allium 'Blue Eddy', but in a much larger form, reaching up to 24" tall for good garden presence. Let the seed heads dry in place for extended interest. Attracts butterflies, resists deer. Grow Allium 'Medusa' in borders, cutting and butterfly gardens. Drought tolerant when established.