Top-rated products Allium QuartetOrnamental Onion

Alliums are a favorite among gardeners for their bold, upright growth, adding both structure and vibrant colour to early summer garden borders. This exceptional collection features four distinctive species that thrive in gravel gardens and rockeries. When planted in clusters, they form a striking display that bridges the transition from spring bulbs to summer perennials. Like all Alliums, they are low-maintenance and easy to grow once established. Allium Collection Includes: Allium sphaerocephalon – A subtle variety with unique, oval-shaped purple-green flower heads, perfect for pairing with swaying grasses. Height: 60cm (24″). Spread: 8cm (3″). Allium moly – Clusters of star-like, golden yellow flowers bloom in late spring. Height: 15cm (6″). Spread: 5cm (2″). Allium roseum – Known as rosy garlic, this variety features slender, grass-like leaves topped with delicate, pale pink, cup-shaped flowers. Height: 60cm (24″). Spread: 10cm (4″). Allium ‘Purple Sensation’ – Large globe-shaped clusters of vibrant purple flowers, each up to 8cm (3″) in diameter. Height: 90cm (36″). Spread: 10cm (4″). Alliums are prized by gardeners for their stiff, upright habit that lends structure and colour to early summer borders. This superb collection brings together 4 unusual species which are particularly well suited to gravel gardens and rockeries. When planted in dense groups they create an eye-catching display that bridges the gap between spring bulbs and summer perennials. Alliums thrive in light sandy, well drained soil in full sun. Avoid planting in cold wet soils as the bulbs are prone to rot in these conditions. Plant allium bulbs at a depth of 10cm (4″) and a distance of 10cm (4″) apart. A slow release fertilizer can be added to poor soils at the time of planting to improve fertility. When growing alliums, plant them where the leaves of other plants will cover the base of their stems. This will hide the old foliage which dies back before flowering begins.