Plant details
- Common Name: Ornamental onion
- Genus: Allium
- Species: hollandicum
- Cultivar: 'Purple Sensation'
- Skill Level: beginner
- Exposure: full sun
- Hardiness: hardy
- Soil type: well-drained/light
- Height: 1m
- Spread: 0.07m
- Flowering period: June to July
- Time to divide plants: September to November
The tall flowers of 'Purple Sensation' appear in summer, showing off rounded heads full of deep violet flowers. These alliums are perfect for a sunny border. It is best to remove the immature seed-heads as the seedlings tend to have paler flowers. The Royal Horticultural Society has given it its prestigious Award of Garden Merit (AGM) in recognition of its outstanding excellence.
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