Allium ‘Ostara’ (Ornamental Allium) is a low-growing, bulbous perennial boasting large rounded clusters, 4-6 in. across (10-15 cm), densely packed with deep reddish purple, star-shaped flowers. Blooming in late spring and early summer, they are borne atop straight, sturdy stems just above the attractive foliage clump of broad, fleshy blue-green leaves. Rich in nectar, the flowers attract bees, butterflies, and other pollinating insects. They make excellent cut flowers too. Allium ‘Ostara’ results from a cross between A. atropurpureum and A. karataviense. Easy to grow, carefree, deer and rabbit resistant, this Allium is a charming addition to flower borders and containers.
Hundreds of Allium species exist, but only a few have made a name for themselves as garden plants. The ornamental onions distinguish themselves by their remarkable diversity in color, inflorescence, and flowering height. Many species bloom in early summer – just after the spring-flowering period and just before the exuberant full bloom of summer. Certain small species are just perfect for a rock garden, and several lend themselves to naturalizing. All species can be used in the border.
| Hardiness |
4 - 8 |
|---|---|
| Heat Zones |
1 - 10 |
| Plant Type | Bulbs |
| Plant Family | Amaryllidaceae |
| Genus | Allium |
| Common names | Onion, Ornamental Onion |
| Exposure | Full Sun |
| Season of Interest | Spring (Late), Summer (Early) |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 1' - 2' (30cm - 60cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Chalk, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Moist but Well-Drained, Well-Drained |
| Characteristics | Cut Flowers, Fragrant, Showy |
| Tolerance | Drought, Deer |
| Attracts | Bees, Butterflies |
| Garden Uses | Beds And Borders, Patio And Containers |
| Garden Styles | City and Courtyard, Gravel and Rock Garden, Informal and Cottage |
| Hardiness |
4 - 8 |
|---|---|
| Heat Zones |
1 - 10 |
| Plant Type | Bulbs |
| Plant Family | Amaryllidaceae |
| Genus | Allium |
| Common names | Onion, Ornamental Onion |
| Exposure | Full Sun |
| Season of Interest | Spring (Late), Summer (Early) |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 1' - 2' (30cm - 60cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Chalk, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Moist but Well-Drained, Well-Drained |
| Characteristics | Cut Flowers, Fragrant, Showy |
| Tolerance | Drought, Deer |
| Attracts | Bees, Butterflies |
| Garden Uses | Beds And Borders, Patio And Containers |
| Garden Styles | City and Courtyard, Gravel and Rock Garden, Informal and Cottage |
How many Allium ‘Ostara’ (Ornamental Allium) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Allium ‘Ostara’ (Ornamental Allium) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
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