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Eryngium x oliverianum (Oliver eryngo)

Beginner
skill rating
1 hour care
per year
0.9m
Max height
0.5m
Max spread
2-5 years
To maturity

Plant details

Botanical name

Eryngium x oliverianum

Other names

Oliver eryngo

Genus

Eryngium Eryngium

Species

E. x oliverianum - E. x oliverianum is an erect, deciduous perennial with ovate to heart-shaped, toothed, dark green leaves and branched stems bearing cone-like umbels of tiny flowers surrounded by showy, narrow, spiny, blue to purple bracts.


Eryngium x oliverianum is: Deciduous

Habit

Erect

Awards

RHS AGM (Award of Garden Merit)

Flower

Blue, Purple in Summer; Purple, Blue in Autumn

Foliage

Dark-green in Summer; Dark-green in Autumn

How to care

Watch out for

Specific pests

Leaf and bud eelworms Leaf and bud eelworms

Foot and root rot , Powdery mildew Foot and root rot , Powdery mildew

General care

Pruning

Cut back faded flower stems or leave for winter interest.

Propagation methods

Root cuttings


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Where to grow

Eryngium x oliverianum (Oliver eryngo) will reach a height of 0.9m and a spread of 0.5m after 2-5 years.

Suggested uses

Coastal, Cottage/Informal, Flower Arranging, Beds and borders, Gravel, Wildlife

Cultivation

Plant in poor or moderately fertile, dry, well-drained soil in full sun. Does not tolerate wet, winter conditions.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

Exposure

Exposed

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Eryngium x oliverianum

Other names

Oliver eryngo

Genus

Eryngium Eryngium

Species

E. x oliverianum - E. x oliverianum is an erect, deciduous perennial with ovate to heart-shaped, toothed, dark green leaves and branched stems bearing cone-like umbels of tiny flowers surrounded by showy, narrow, spiny, blue to purple bracts.

Foliage

Deciduous

Habit

Erect

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Blue, Purple in Summer; Purple, Blue in Autumn

Foliage

Dark-green in Summer; Dark-green in Autumn


How to care

Watch out for

Specific pests

Leaf and bud eelworms

Specific diseases

Foot and root rot , Powdery mildew

General care

Pruning

Cut back faded flower stems or leave for winter interest.

Propagation methods

Root cuttings


Monthly care advice


Where to grow

Eryngium x oliverianum (Oliver eryngo) will reach a height of 0.9m and a spread of 0.5m after 2-5 years.

Suggested uses

Coastal, Cottage/Informal, Flower Arranging, Beds and borders, Gravel, Wildlife

Cultivation

Plant in poor or moderately fertile, dry, well-drained soil in full sun. Does not tolerate wet, winter conditions.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

Exposure

Exposed

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed Tell us...
Hardiness: Hardy (H4) Tell us...

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