Oliver Sea Holly, Oliver Eryngo
Eryngium x oliverianum (Oliver Sea Holly) is an upright perennial with basal rosettes of heart-shaped, strongly toothed, dark green leaves. From mid-summer to early fall, sturdy leafy violet-blue stems bear large, cone-shaped, thistle-like, blue to lavender-blue flower heads. Each flower head is surrounded by narrow, spiny, metallic-blue bracts. Attractive to bees and butterflies but deer resistant, this striking Sea Holly survives in a wider range of soil types than many more difficult eryngiums. Eryngium x oliverianum is a cross between E. planum and E. giganteum. According to many, it has the strongest blue stems and flowers of any eryngiums.
| Hardiness |
5 - 8 |
|---|---|
| Heat Zones |
5 - 8 |
| Plant Type | Perennials |
| Plant Family | Apiaceae |
| Genus | Eryngium |
| Common names | Sea Holly |
| Exposure | Full Sun |
| Season of Interest |
Summer (Mid, Late) Fall |
| Height |
2' - 3' (60cm - 90cm) |
| Spread |
1' - 2' (30cm - 60cm) |
| Spacing | 24" (60cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Chalk, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Dried Arrangements, Cut Flowers, Plant of Merit, Showy |
| Tolerance | Drought, Deer, Salt, Dry Soil |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Beds And Borders |
| Garden Styles | Prairie and Meadow, Informal and Cottage, Gravel and Rock Garden, Coastal Garden |
| Hardiness |
5 - 8 |
|---|---|
| Heat Zones |
5 - 8 |
| Plant Type | Perennials |
| Plant Family | Apiaceae |
| Genus | Eryngium |
| Common names | Sea Holly |
| Exposure | Full Sun |
| Season of Interest |
Summer (Mid, Late) Fall |
| Height |
2' - 3' (60cm - 90cm) |
| Spread |
1' - 2' (30cm - 60cm) |
| Spacing | 24" (60cm) |
| Maintenance | Low |
| Water Needs | Low |
| Soil Type | Chalk, Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Dried Arrangements, Cut Flowers, Plant of Merit, Showy |
| Tolerance | Drought, Deer, Salt, Dry Soil |
| Attracts | Bees, Birds, Butterflies |
| Garden Uses | Beds And Borders |
| Garden Styles | Prairie and Meadow, Informal and Cottage, Gravel and Rock Garden, Coastal Garden |
How many Eryngium x oliverianum (Oliver Sea Holly) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Eryngium x oliverianum (Oliver Sea Holly) | 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.
Join now and start creating your dream garden!
