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Amsonia orientalis

Amsonia orientalis
Eastern Bluestar

3,2/5
4 reviews
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1 reviews
3 reviews

I ordered 3 young plants, they're not looking great... The base of the plants still seems alive but there isn't even a leaf on them, we'll see in the spring how they turn out... However, considering the price we pay for the plants, we can expect a minimum level of quality that is clearly not there!

Bar, 26/09/2021

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This plant carries a 12 months recovery warranty

More information

Perennial, hardy, semi-shrubby plant with blue-violet star-shaped flowers and dark green foliage reminiscent of willow leaves.
Flower size
1 cm
Height at maturity
1 m
Spread at maturity
30 cm
Exposure
Sun, Partial shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Best planting time February to March, September to October
Recommended planting time February to April, September to November
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Flowering time July to September
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Description

Amsonia orientalis is a semi-shrubby perennial plant with strong stems that turn woody at the base, forming large bushy clumps that can reach nearly 1m (3ft) in height. The blue-violet flowers are a very open tube shape, grouped in a panicle and blooming abundantly between July and September. The 6cm (2in) long leaves are dark green, narrow and lanceolate with smooth edges, resembling those of a willow. The deciduous foliage takes on beautiful warm hues in autumn before disappearing for winter.

Unlike its cousins in the genus, Amsonia orientalis is native to northeastern Greece and northwestern Turkey, where it has almost disappeared. These hardy oriental Amsonias grow easily in full sun or partial shade, in well-drained and moist soil that does not dry out in summer.

A magnificent ornamental plant for gardens, its dense foliage enhances all its neighbours. You can easily integrate it into a perennial bed alongside asters, camassias or bellflowers.

The genus name comes from the Virginian physician Charles Amson (18th century).

Amsonia orientalis in pictures

Amsonia orientalis (Flowering) Flowering
Amsonia orientalis (Foliage) Foliage

Flowering

Flower colour blue
Flowering time July to September
Inflorescence Panicle
Flower size 1 cm

Foliage

Foliage persistence Deciduous
Foliage colour green

Plant habit

Height at maturity 1 m
Spread at maturity 30 cm
Growth rate slow

Botanical data

Genus

Amsonia

Species

orientalis

Family

Apocynaceae

Other common names

Eastern Bluestar

Botanical synonyms

Rhazya orientalis, Rhazya thracica

Origin

Middle East

Product reference8022111

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Planting and care

Plant Amsonia in sunny areas with light and moist soil. If the soil is heavy, add 1/3 of coarse gravel to the planting hole. In sandy soil with excessive drainage, add 1/3 of loam to ensure the water retention necessary for the plant's growth.

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Planting period

Best planting time February to March, September to October
Recommended planting time February to April, September to November

Intended location

Suitable for Meadow
Type of use Border
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Amateur
Planting density 5 per m2
Exposure Sun, Partial shade
Soil pH Any
Soil type Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, well-drained

Care

Pruning instructions Cut back the clump in late winter.
Pruning Pruning recommended once a year
Pruning time February to March
Disease resistance Very good
Overwinter Can be left in the ground
3,2/5
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