About
Allium 'Atlas' is a bulbous perennial that reaches approximately 1.2 meters in height. It features sizable, spherical clusters of purple star-like blossoms with green centers, emerging on sturdy, upright stems from May through June. This variety is well-suited for use as a cut flower, maintaining its appeal in both fresh arrangements and dried displays.
About the genus
Allium consists of bulbous herbaceous perennials characterized by a pronounced onion or garlic aroma. They feature linear, strap-like, or cylindrical leaves that arise from the base. The flowers, which can be star-shaped or bell-shaped, are arranged in an umbel atop a stem that lacks leaves.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H4
Plant details
- Plant type
- Bulbs
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 1-1.5 metres
- Spread
- 0-0.1 metre
- Time to full height
- 2-5 years
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Gravel garden, Patio and container plants, Wildlife gardens
- Fragrance
- Foliage
Care notes
- Cultivation
- Grow in fertile, well-drained soil. Add grit to clay soils to improve drainage. Care should be taken in colder regions to mulch or plant in pots and move to a frost-free location See allium cultivation
- Pruning
- No pruning required
- Propagation
- Propagate by division: once flowering is over and leaves have died down, lift the bulbs, detach any offsets, and plant them in their final positions or grow on first in gritty compost
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to onion white rot and downy mildews