Allium 'Caeruleum' (blue-flowered garlic)
Delivery begins from 14 September 2026
Spring flowering bulbs and plants are scheduled to begin delivery from 14 September 2026.
Allium caeruleum azureum is a most refined choice for late spring into early summer, sending up slim, upright stems topped with perfectly rounded, sapphire-blue flower heads. Each globe is composed of neat, starry florets—wonderfully crisp in modern gravel schemes, yet equally at home threaded through a softly planted border.
Particularly useful where winter soils can sit wet: plant in pots or raised pockets of free-draining compost and let the colour float above emerging perennials. A quietly architectural allium, and a fine companion for roses and shrubs where its cool blue reads as an elegant foil.
- Colour with poise: vivid blue globes for a clean, contemporary lift
- Border and container friendly: excellent in pots where heavy ground can be troublesome
- Wildlife-wise planting: pollinator friendly, with deer resistance
| Botanical name | Allium caeruleum azureum |
| Flower colour | Blue |
| Bulb size | 5/6 |
| Established height | 80cm |
| Established spread | 10cm |
| Plant spacing | 10-15cm |
| Leaf colour | Green |
| Habit | Upright |
| Life cycle | Perennial |
| Hardiness | Fully Hardy |
| Years to establish | 1 year |
| Sunlight | Full-Sun |
| Position | Sheltered |
| Suitable for | Borders, Containers, Cottage & informal gardens, City & courtyard gardens, Underplanting roses & shrubs |
| Soil acidity | Any |
| Soil moisture | Well-drained |
| Soil type | Fertile, well-drained (container-friendly for heavy clay soils) |
| RHS Award (AGM) | No |
| Growing skill | Easy |
| Pollinator-friendly | Yes |
| Deer resistant | Yes |
Planting and Flowering Calendar
Key Features
Packed in paper
Packed peat-free
Great for Shade
Attracts wildlife
Good for cutting
Naturalising

