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Quercus palustris (Pin oak)

Beginner
skill rating
1 hour care
per year
20m
Max height
12m
Max spread
20-50 years
To maturity
Low
Toxicity

Plant details

Botanical name

Quercus palustris

Other names

Pin oak, Swamp Spanish oak

Genus

Quercus Quercus

Species

Q. palustris - Q. palustris is a large, vigorous, broadly conical, deciduous tree with pendent lower branches, elliptic, glossy, deeply lobed, mid-green leaves turning scarlet to reddish-brown in autumn. Inconspicuous flowers in spring are followed by spherical, brown fruit in autumn.


Quercus palustris is: Deciduous

Tree shape

Spreading

Toxicity

Ingestion may cause severe discomfort.

Awards

RHS AGM (Award of Garden Merit)

Flower

Yellow-green in Spring

Foliage

Mid-green in Spring; Mid-green in Summer; Scarlet, Reddish-brown in Autumn

How to care

Watch out for

Pests

Also: Knopper gall wasps

Specific pests

Aphids , Oak gall wasps Aphids , Oak gall wasps

Diseases

Also suffers from oak wilt in North America only.

Oak wilt , Powdery mildew Oak wilt , Powdery mildew

General care

Pruning

Pruning group 1

Propagation methods

Grafting, Seed


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Where to grow

Quercus palustris (Pin oak) will reach a height of 20m and a spread of 12m after 20-50 years.

Suggested uses

Architectural, Beds and borders, Cottage/Informal, Low Maintenance, Specimen tree

Cultivation

Prefers acid, fertile, well-drained loam in full sun. Will tolerate partial shade. Avoid wet, poorly-drained conditions. Tends to drop old leaves in spring.

Soil type

Clay, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

Companion plants

Botanical name

Quercus palustris

Other names

Pin oak, Swamp Spanish oak

Genus

Quercus Quercus

Species

Q. palustris - Q. palustris is a large, vigorous, broadly conical, deciduous tree with pendent lower branches, elliptic, glossy, deeply lobed, mid-green leaves turning scarlet to reddish-brown in autumn. Inconspicuous flowers in spring are followed by spherical, brown fruit in autumn.

Foliage

Deciduous

Tree shape

Spreading

Toxicity

Ingestion may cause severe discomfort.

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Yellow-green in Spring

Foliage

Mid-green in Spring; Mid-green in Summer; Scarlet, Reddish-brown in Autumn


How to care

Watch out for

Pests

Also: Knopper gall wasps

Specific pests

Aphids , Oak gall wasps

Diseases

Also suffers from oak wilt in North America only.

Specific diseases

Oak wilt , Powdery mildew

General care

Pruning

Pruning group 1

Propagation methods

Grafting, Seed


Monthly care advice


Where to grow

Quercus palustris (Pin oak) will reach a height of 20m and a spread of 12m after 20-50 years.

Suggested uses

Architectural, Beds and borders, Cottage/Informal, Low Maintenance, Specimen tree

Cultivation

Prefers acid, fertile, well-drained loam in full sun. Will tolerate partial shade. Avoid wet, poorly-drained conditions. Tends to drop old leaves in spring.

Soil type

Clay, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

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

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Quercus palustris (Pin oak)

Common pest name

Scientific pest name

Acute Oak Decline

Type

Other

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Serious disorder of oaks likely to be caused by a complex of organisms. Eradication is not feasible; but good silvicultural practices could help to reduce spread and impacts.

Defra's Risk register #2

Plant name

Quercus palustris (Pin oak)

Common pest name

Oak jewel beetle; Oak splendour beetle; Two -spot woodborer

Scientific pest name

Agrilus biguttatus

Type

Insect

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

5

General biosecurity comments

Native beetle attracted to stressed trees and which is one of the biotic factors contributing to Acute oak decline. Good silviculture practice can help to mitigate the decline in tree health.

Defra's Risk register #3

Plant name

Quercus palustris (Pin oak)

Common pest name

Ramorum leaf blight; Ramorum shoot dieback; Rhododendron twig blight; Sudden oak death

Scientific pest name

Phytophthora ramorum

Type

Oomycete

Current status in UK

Present (Limited)

Likelihood to spread in UK (1 is very low - 5 is very high)

4

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Pathogen of larch and other hosts subject to EU emergency legislation. A containment strategy is in place in the UK; reflecting its presence in wider environment/forestry settings in some areas. EU regulatory status is under review.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/

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This plant likes... Garden match
Soil types: Clay, Loamy, Sandy Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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