Allium Collection Upright stems add a strong vertical accent to cottage garden borders. These magnificent allium bulbs produce an explosion of colour, followed by architectural seedheads that create a spectacular autumn display. Undemanding and easy to grow, these magnificent allium flowers are also excellent for cutting. Allium Collection includes: Allium roseum - Also known as rosy garlic, produces narrow, grass-like leaves, from which stems of loose, pale pink, cup-shaped allium flowers appear. Height 60cm (24). Spread: 10cm (4). Allium caeruleum - Bright blue globes of starry flowers are carried on stiff upright stems. Height: 60cm (24). Spread: 8cm (3). Allium sphaerocephalon - An understated allium with unusual oval-shaped, purple-green flower heads, that associate beautifully with swaying grasses. Height: 60cm (24). Spread: 8cm (3). Size 4/5 Allium \'Purple Sensation\' - Globes of starry purple flowers that measure up to 8cm (3) across. Height: 90cm (36). Spread: 10cm (4). Size 9/10 Allium \'Mount Everest\' - Globes of more than 50 star-shaped blooms during June, just before your summer bedding comes into flower.Size 9/10 Allium moly - Neat clumps of grey-green, strap-like foliage bearing dense clusters of star-shaped, golden flowers from late spring. Height: 15cm (6). Spread: 5cm (2).