Home / Guides / Plant Files / Apocynaceae

Amsonia Species, Blue Star, Rhazya

Amsoniaorientalis

Upload Image Print Article
Amsonia orientalis by nihanhande
Upload Image Print Article
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
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

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements

Unknown - Tell us

Patent Information

Unknown - Tell us

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

View this plant in a garden
3 members have or want this plant for trade

Featured Videos

Gardener's Notes:

Post Comment
0
positive
0
neutral
0
negative
Sort By:
Post Comment
Sort By:
Popular Plants
SEE ALL
Iris
Peppers
Hydrangeas
Hostas
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
BUG FILES
Cabbage White
(Pieris rapae)
BIRD FILES
Secretary Bird
(Sagittarius serpentarius)
Quick Links
View All Families
View All Genera
View All Species
Freeze/Frost Dates
PlantFiles FAQ
Plants with no Photos
Contribute to Dave’s Garden
Add a New Plant to the List
Featured
BUG FILES
Cabbage White
(Pieris rapae)
BIRD FILES
Secretary Bird
(Sagittarius serpentarius)