The season of onion flowers: A celebration of 'Allium' bridging spring and early summer

As spring transitions into early summer, the striking globe-shaped flowers of the Allium genus are gracing gardens, offering a unique visual spectacle. While farmers may worry about the "bolting" of onions, where flower stalks emerge and reduce leaf quality, gardeners embrace this phenomenon. Alliums, a diverse group with nearly 1,000 species, transform this "bolting" into a celebrated feature, with their distinctive spherical blooms becoming a garden's focal point.

Many familiar plants, such as garlic, wild chives, onions, and mountain garlic, belong to the Allium genus. At the Cheongsong Arboretum, varieties like 'Gladiator', 'Globemaster', and 'Geganteum' present their purple flower heads sequentially, while 'Party Balloons' appear like buoyant orbs. 'Mount Everest' offers a clear white bloom that shimmers in the sunlight, and 'Atropurpureum' displays a deep purple hue. The verticality of these tall flower stalks, often topped with a dense cluster of florets, adds significant height and立体感 to garden designs.

Upon closer inspection, the 10-15 cm diameter flower heads reveal numerous small, star-shaped blossoms. After the petals fall, seeds form within the dried structure. Alliums are known for their ease of care, thriving in sunny locations with well-drained soil. Their leaves may yellow and wither as the flower stalk develops, but gardeners often leave them to photosynthesize. The dried flower heads also offer long-lasting visual interest.

These bulbous plants are resistant to pests and diseases. By planting varieties with staggered blooming times, gardeners can enjoy Allium flowers from mid-May to late June. During early summer, they also serve as valuable nectar sources, attracting bees and butterflies. The article notes the increasingly shorter springs, with Seoul experiencing its first 30-degree Celsius day earlier this year, making the vibrant Allium blooms a poignant reminder of the fleeting beauty of the season.