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Catalpa speciosa (Western catalpa)

Beginner
skill rating
1 hour care
per year
15m
Max height
15m
Max spread
20-50 Years
To maturity

Plant details

Botanical name

Catalpa speciosa

Other names

Western catalpa, Catawba, Cigar tree, Bois chavanon, Early-flowering catalpa, Hardy catalpa , Northern catalpa , Indian cigar, Shawnee wood

Genus

Catalpa Catalpa

Species

C. speciosa - C. speciosa is a spreading, deciduous tree with large, broadly ovate to heart-shaped, glossy, dark green leaves and upright panicles of yellow- and purple-marked, white flowers in summer followed by slender seedpods.


Catalpa speciosa is: Deciduous

Habit

Spreading

Awards

RHS AGM (Award of Garden Merit)

Flower

Spotted, White in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn

How to care

Watch out for

Pests

Generally pest-free.

Verticillium wilt Verticillium wilt

General care

Pruning

Pruning group 1 or group 7 if pollarded.

Propagation methods

Grafting, Softwood cuttings


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Where to grow

Catalpa speciosa (Western catalpa) will reach a height of 15m and a spread of 15m after 20-50 Years.

Suggested uses

Specimen tree, Architectural

Cultivation

Plant in moist, well-drained, fertile soil in full sun. Will tolerate clay soils. Shelter from strong winds as these may shred the large leaves. A large tree suitable for very large gardens, planted a good distance from any structure.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

North, South, East, West

Exposure

Sheltered

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

Catalpa speciosa

Other names

Western catalpa, Catawba, Cigar tree, Bois chavanon, Early-flowering catalpa, Hardy catalpa , Northern catalpa , Indian cigar, Shawnee wood

Genus

Catalpa Catalpa

Species

C. speciosa - C. speciosa is a spreading, deciduous tree with large, broadly ovate to heart-shaped, glossy, dark green leaves and upright panicles of yellow- and purple-marked, white flowers in summer followed by slender seedpods.

Foliage

Deciduous

Habit

Spreading

Awards

RHS AGM (Award of Garden Merit)


Colour

Flower

Spotted, White in Summer

Foliage

Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn


How to care

Watch out for

Pests

Generally pest-free.

Specific diseases

Verticillium wilt

General care

Pruning

Pruning group 1 or group 7 if pollarded.

Propagation methods

Grafting, Softwood cuttings


Monthly care advice


Where to grow

Catalpa speciosa (Western catalpa) will reach a height of 15m and a spread of 15m after 20-50 Years.

Suggested uses

Specimen tree, Architectural

Cultivation

Plant in moist, well-drained, fertile soil in full sun. Will tolerate clay soils. Shelter from strong winds as these may shred the large leaves. A large tree suitable for very large gardens, planted a good distance from any structure.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

North, South, East, West

Exposure

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

Catalpa speciosa (Western catalpa)

Common pest name

Japanese fruit scale; Mulberry scale; White peach scale

Scientific pest name

Pseudaulacaspis pentagona

Type

Insect

Current status in UK

Absent

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

4

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

3

General biosecurity comments

Scale insect which in favourable conditions may kill trees. There have been a number of findings in the UK but some uncertainty about whether the pest is established. Stakeholder organisations may wish to monitory for its presence.

Defra's Risk register #2

Plant name

Catalpa speciosa (Western catalpa)

Common pest name

Elm spanworm; Ennomid; white; Linden moth; snow-white

Scientific pest name

Ennomos subsignaria

Type

Insect

Current status in UK

Absent

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

3

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

3

General biosecurity comments

Polyphagous moth pest which defoliates deciduous trees and; with repeated infestation; can cause tree death. Present in North America and current import requirements do not fully mitigate the risk of introduction. A PRA will help to assess the level of risk more fully.

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: Chalky, Clay, Loamy, Sandy (will tolerate most soil types) Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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