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Amsonia Species, Blue Star, Rhazya

Amsoniaorientalis

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Family

Apocynaceae (a-pos-ih-NAY-see-ee)

Info

Genus

Amsonia (am-SO-nee-uh)

Info

Species

orientalis (or-ee-en-TAY-liss)

Info

Synonym

Rhazya orientalis

Rhazya thracica

Sun Exposure

Sun to Partial Shade

Foliage

Herbaceous

Height

18-24 in. (45-60 cm)

Spacing

15-18 in. (38-45 cm)

18-24 in. (45-60 cm)

Hardiness

USDA Zone 6a: to -23.3 °C (-10 °F)

USDA Zone 6b: to -20.5 °C (-5 °F)

USDA Zone 7a: to -17.7 °C (0 °F)

USDA Zone 7b: to -14.9 °C (5 °F)

USDA Zone 8a: to -12.2 °C (10 °F)

USDA Zone 8b: to -9.4 °C (15 °F)

USDA Zone 9a: to -6.6 °C (20 °F)

USDA Zone 9b: to -3.8 °C (25 °F)

Danger

Handling plant may cause skin irritation or allergic reaction

Bloom Color

Dark Blue

Bloom Time

Late Spring/Early Summer

Other Details

Gardener's Notes:

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positive

neutral

negative

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Amsonia Species, Blue Star, Rhazya

Amsoniaorientalis

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