Amsonia Species, Blue Star, Rhazya

Amsoniaorientalis

Family
Apocynaceae (a-pos-ih-NAY-see-ee)
Genus
Amsonia (am-SO-nee-uh)
Species
orientalis (or-ee-en-TAY-liss)
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
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
From herbaceous stem cuttings
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors
Scarify seed before sowing
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Woodstock, New York

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Gardener's Notes:

0
positive
0
neutral
0
negative
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