Amsonia tabernaemontana

Blue dogbane

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Key information

Plant type

Hardy perennial

Flower colour






Skill level


photo by John Glover, copyright GAP Photos (11788)

Plant details

A beautiful plant from the south-east USA that looks particularly good in the front or middle of a border. It is a clump-forming perennial with willowy, dark green leaves and clusters of sky-blue, starry flowers in spring and summer. The gorgeous blue blooms look stunning next to delicate white flowers.

Family: Apocynaceae

Genus: Amsonia

Species: tabernaemontana

Plant type: Hardy perennial

Flower colour: Blue

Foliage colour: Dark green

Feature: Flowers

Sun exposure: Full sun, Partial shade

Soil: Well-drained/light, Moist

Hardiness: Hardy

Skill level: Experienced

Height: 60cm

Spread: 45cm

Time to divide plants: March to May

Flowering period: May to July

Reader reviews


I have grown amsonia for a few years now in clay soil and in partial shade. I did add some grit and homemade compost when planted and its been reliable ever since. The flowers are quite showy even though the blue flowers are almost grey. That doesnt sound very inspiring but I wouldnt be without them now. I also value them enhancing my display of aquilegia and dark geraniums. Lovely combo

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