Allium giganteum

Bring a sense of grandeur to your garden with the stately Allium giganteum. Affectionately dubbed giant onion, this classic horticultural marvel towers majestically with stems reaching a lofty 1.2-1.5m. Topped by globular inflorescences up to 15cm across, each sphere is densely packed with vivid purple, star-like florets, creating a spectacular display from late spring well into early summer.

Ideal for adding height and drama to your borders or as an eye-catching centerpiece, Allium giganteum is celebrated for its ease of cultivation and compatibility with a quintessential UK garden setting. Not only do they command attention with their regal presence, but Allium giganteum also chimes beautifully with classic garden companions such as roses, delphiniums, and peonies.

To get the best out of your giant alliums, plant Allium giganteum in groups, either near the back of flowering borders, or on their own. Now, it’s just a matter of waiting till late-spring for flowering magic to happen. Once planted in the autumn, these hardy Allium giganteum bulbs promise to emerge triumphantly year after year, with minimal maintenance required.

The fact Allium giganteum won a prestigious RHS Award of Garden Merit means you can rely on it giving you a spectacular, colourful display without fuss.