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Alstonia scholaris (Devil tree)

Advanced
skill rating
2 hours care
per year
40m
Max height
3.5m
Max spread
20-50 years
To maturity
Low
Toxicity

Plant details

Botanical name

Alstonia scholaris

Other names

Devil tree, Pali-mari, Dita bark, Blackboard tree, Ditabark, Milkwood-pine, White cheesewood, Scholar tree, Echites scholaris, Bitter bark, Milkwood pine

Genus

Alstonia Alstonia

Species

A. scholaris - A. scholaris is a tender, upright, evergreen tree with whorled branches bearing whorls of leathery, glossy, narrowly ovate or oblong, dark green leaves, grey-green beneath, and dense cymes of fragrant, pale green or creamy-white flowers in autumn.


Alstonia scholaris is: Evergreen

Habit

Upright

Toxicity

All parts are poisonous if ingested.

Flower

Cream, Pale-green in Autumn

Foliage

Dark-green in All seasons

How to care

Watch out for

Pests

Generally pest free.

Diseases

Generally disease free.

General care

Pruning

Pruning group 9. Plants grown under glass will require restrictive pruning. Tolerate coppicing.

Propagation

Sow seed at 20-25C in spring.

Propagation methods

Semi-ripe cuttings, Seed


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Where to grow

Alstonia scholaris (Devil tree) will reach a height of 40m and a spread of 3.5m after 20-50 years.

Suggested uses

Conservatory, Containers, Greenhouse, Sub-Tropical, Wallside and trellises

Cultivation

Outdoors in frost-free areas, grow in fertile, moist but well-drained soil full sun. Alternatively, grow under glass in loam-based compost in full light with shade from hot sun. Provide good ventilation.

Soil type

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

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Tender in frost (H3), Indoor heated (H1)

Companion plants

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

Botanical name

Alstonia scholaris

Other names

Devil tree, Pali-mari, Dita bark, Blackboard tree, Ditabark, Milkwood-pine, White cheesewood, Scholar tree, Echites scholaris, Bitter bark, Milkwood pine

Genus

Alstonia Alstonia

Species

A. scholaris - A. scholaris is a tender, upright, evergreen tree with whorled branches bearing whorls of leathery, glossy, narrowly ovate or oblong, dark green leaves, grey-green beneath, and dense cymes of fragrant, pale green or creamy-white flowers in autumn.

Native to

India

Foliage

Evergreen

Habit

Upright

Toxicity

All parts are poisonous if ingested.


Colour

Flower

Cream, Pale-green in Autumn

Foliage

Dark-green in All seasons


How to care

Watch out for

Pests

Generally pest free.

Diseases

Generally disease free.

General care

Pruning

Pruning group 9. Plants grown under glass will require restrictive pruning. Tolerate coppicing.

Propagation

Sow seed at 20-25C in spring.

Propagation methods

Semi-ripe cuttings, Seed


Monthly care advice


Where to grow

Alstonia scholaris (Devil tree) will reach a height of 40m and a spread of 3.5m after 20-50 years.

Suggested uses

Conservatory, Containers, Greenhouse, Sub-Tropical, Wallside and trellises

Cultivation

Outdoors in frost-free areas, grow in fertile, moist but well-drained soil full sun. Alternatively, grow under glass in loam-based compost in full light with shade from hot sun. Provide good ventilation.

Soil type

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

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

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

Tender in frost (H3), Indoor heated (H1)

USDA zones

Zone 11, Zone 10, Zone 9

Defra's Risk register #1

Plant name

Alstonia scholaris (Devil tree)

Common pest name

Scientific pest name

Spilostethus pandurus

Type

Insect

Current status in UK

Absent

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

2

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

3

General biosecurity comments

Seed bug unlikely to pose a significant threat to UK plant health.

Defra's Risk register #2

Plant name

Alstonia scholaris (Devil tree)

Common pest name

Scientific pest name

Spilostethus hospes

Type

Insect

Current status in UK

Absent

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

1

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

3

General biosecurity comments

Seed bug unlikely to pose a significant threat to UK plant health.

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 Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Tender in frost (H3), Indoor heated (H1) Tell us...

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