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Amsonia tabernaemontana (Eastern bluestar)

Beginner
skill rating
1 hour care
per year
0.6m
Max height
0.5m
Max spread
1-2 years
To maturity
Low
Toxicity

Plant details

Botanical name

Amsonia tabernaemontana

Other names

Blue dogbane, Eastern bluestar, Eastern blue star

Genus

Amsonia Amsonia

Species

A. tabernaemontana - A. tabernaemontana is a clump-forming, deciduous perennial with erect stems bearing narrowly lance-shaped, dark green leaves turning yellow in autumn and rounded, open panicles of star-shaped, pale blue flowers from late spring to midsummer.


Amsonia tabernaemontana is: Deciduous

Habit

Clump-forming, Erect

Toxicity

Contact with the milky sap may cause skin irritation.

Flower

Pale-blue in Spring; Pale-blue in Summer

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn

How to care

Watch out for

Pests

Generally pest free.

Diseases

Generally disease free.

General care

Pruning

Cut back in late autumn.


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Where to grow

Amsonia tabernaemontana (Eastern bluestar) will reach a height of 0.6m and a spread of 0.5m after 1-2 years.

Suggested uses

Beds and borders, Cottage/Informal, Drought Tolerant, Prairie planting, Woodland

Cultivation

Grow in moist but well-drained soil in full sun or light shade. Will tolerate short periods of drought.

Soil type

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

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, 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

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

Botanical name

Amsonia tabernaemontana

Other names

Blue dogbane, Eastern bluestar, Eastern blue star

Genus

Amsonia Amsonia

Species

A. tabernaemontana - A. tabernaemontana is a clump-forming, deciduous perennial with erect stems bearing narrowly lance-shaped, dark green leaves turning yellow in autumn and rounded, open panicles of star-shaped, pale blue flowers from late spring to midsummer.

Foliage

Deciduous

Habit

Clump-forming, Erect

Toxicity

Contact with the milky sap may cause skin irritation.


Colour

Flower

Pale-blue in Spring; Pale-blue in Summer

Foliage

Dark-green in Spring; Dark-green in Summer; Dark-green in Autumn


How to care

Watch out for

Pests

Generally pest free.

Diseases

Generally disease free.

General care

Pruning

Cut back in late autumn.


Monthly care advice


Where to grow

Amsonia tabernaemontana (Eastern bluestar) will reach a height of 0.6m and a spread of 0.5m after 1-2 years.

Suggested uses

Beds and borders, Cottage/Informal, Drought Tolerant, Prairie planting, Woodland

Cultivation

Grow in moist but well-drained soil in full sun or light shade. Will tolerate short periods of drought.

Soil type

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

Soil drainage

Moist but well-drained

Soil pH

Acid, Alkaline, 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 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3

Defra's Risk register #1

Plant name

Amsonia tabernaemontana (Eastern bluestar)

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

Amsonia tabernaemontana (Eastern bluestar)

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: Partial Shade, Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

DISCUSS THIS PLANT

This plant is featured at Chelsea Flower Show 2009

Amsonia tabernaemontana (Blue star) has been used in The Foreign & Colonial Investments' Garden for Chelsea Flower Show 2009. read more

There are 2 active discussions about Amsonia tabernaemontana (Eastern bluestar)

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