Allium lusitanicum 'Summer Beauty' (Ornamental Onion 'Summer Beauty') is a compact, clumping ornamental onion that gives you fresh midsummer color when many spring bulbs have finished. You will get neat, straplike green leaves with a pleasant onion-garlic scent when brushed, topped by rounded flower clusters in pink to pinkish-purple tones that draw pollinators.
Plant it where you want a long season of structure: the foliage stays tidy, and the blooms rise above the leaves for a clean, architectural look. At maturity, expect about 12-24 inches in height, with a modest footprint that works well at the front to middle of mixed perennial beds and along sunny paths or edging.
Give it full sun for the heaviest flowering, but it will also perform in part shade, especially where afternoons are hot. Provide well-drained soil and avoid consistently wet sites. Once established, it handles dry spells well, making it a dependable choice for low-water gardens and tough spots with lean, well-drained soils.
Care is simple: water during the first growing season to help it root in, then irrigate only during extended drought. Remove spent flower heads if you want to limit self-seeding, or leave them for added seasonal interest. Deer and rabbits typically leave the foliage alone, so you can enjoy reliable summer blooms with minimal fuss.