Onion. A bulbous perennial, glaucous-green leaves. Bears umbels, star-shaped deep purple flowers with violet stamens. Max Height 1m. Max Spread 20cm. Flowers May to June. Full sun. Hardy.
Allium rosenbachianum
A bulbous perennial, glaucous-green leaves. Bears umbels, star-shaped deep purple flowers with violet stamens.
Additional information
| Generic | Allium |
|---|---|
| Species | rosenbachianum |
| Varietry | |
| Common Name | Onion |
| Flower Colour | purple |
| Soil | Fertile |
| Aspect | Full sun |
| Foliage | Deciduous |
| Height | 1m |
| Family | Liliaceae |
| Spread | 20cm |
| Growth Speed | |
| Growth Habit | Upright |
| Fragrance | FALSE |
| Foliage Colour | green |
| Flowers From | May, June |
| Colour Fruit | |
| Fruits When | |
| Moisture | Well drained |
| Protection | |
| Hardiness | Hardy |
| Planting | |
| Care | |
| Border | Border |
| Toxicity | |
| Pruning | |
| Pruning Time | |
| Pests and diseases | |
| Maintenance | |
| Propagation |
Related products
Allium hollandicum ‘Purple Sensation’
A bulbous perennial with strap-shaped leaves. Dense umbels of star-shaped, violet-purple flowers.
Allium beesianum
A bulbous perennial with narrow greyish green leaves. Nodding bell-shaped blue flowers.
Allium narcissiflorum
A bulbous perennial with strap-shaped, grey-green leaves. Pendent umbels, of bell-shaped purple-pink flowers.
Allium sativum
Aromatic perennial grown for its bulbs. Grey-green leaves umbels of bell-shaped white flowers.
Allium nigrum
A bulbous perennial grey-green leaves. Flattish umbels, cup-like white flowers, sometimes pale lilac.
Allium karataviense
A bulbous perennial with broad, metallic blue-green leaves. Large white-pink ball of star-like flowers.
Allium schubertii
A bulbous perennial, bright-green leaves, that die back before flowering. Bears umbels, star-shaped pale purple flowers.
Allium cyaneum
A bulbous perennial with dark-green thread-like leaves. Small umbels of bell-shaped, blue flowers on stiff stems.