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PlantFiles: False Spirea, Thunberg's Astilbe
Astilbe thunbergii 'Ostrich Plume'

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Family: Saxifragaceae (saks-ih-frag-AY-see-ee) (Info)
Genus: Astilbe (a-STIL-bee) (Info)
Species: thunbergii (thun-BERG-ee-eye) (Info)
Cultivar: Ostrich Plume
Additional cultivar information: (aka Straussenfeder)

5 vendors have this plant for sale.

8 members have or want this plant for trade.

Category:
Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
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)

Sun Exposure:
Light Shade

Danger:
Unknown - Tell us

Bloom Color:
Pink

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Herbaceous
Bronze-Green

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By lmelling
Thumbnail #1 of Astilbe thunbergii by lmelling

By rebecca101
Thumbnail #2 of Astilbe thunbergii by rebecca101

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Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral berrygirl On Mar 19, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Tall 30" - Plant 24" apart. A taller, later blooming beauty with pink drooping trusses. Astilbes produce an airy plume in summer. Thrives anywhere with rich moist soil and partial shade. Deer resistant.

Positive lmelling On Nov 12, 2004, lmelling from Ithaca, NY (Zone 5b) wrote:

Ostrich plume is one of the taller forms of astilbe, growing to 30." It has beautiful deep green foliage from which the tall hot pink graceful plumes shoot up in July. Beautiful as the "background" astilbe when mixed with other colors and types of astilbe.

Because astilbe is a shallow rooted perennial, it is easy to divide and move pieces every few years. This helps to rejuvenate the plants as well as fertillizing well each spring. Astilbe is a thirsty plant so make sure to keep well watered.

Regional...

This plant has been said to grow in the following regions:

East Tawas, Michigan
Mason, Michigan
Ocean Springs, Mississippi
Ithaca, New York
Southold, New York
Elizabeth City, North Carolina
Raleigh, North Carolina
Norristown, Pennsylvania
Kalama, Washington
Berkeley Springs, West Virginia



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