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Rudbeckia, Sweet Black-Eyed Susan, Sweet Coneflower 'Henry Eilers'

Rudbeckiasubtomentosa

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Rudbeckia subtomentosa by floraphiliac
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Family
Asteraceae (ass-ter-AY-see-ee)
Info
Genus
Rudbeckia (rud-BEK-ee-a)
Info
Species
subtomentosa (sub-toh-men-TOH-suh)
Info
Synonym
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
4-6 ft. (1.2-1.8 m)
Spacing
24-36 in. (60-90 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)
Danger

Unknown - Tell us

Bloom Color
Gold (yellow-orange)
Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color

Unknown - Tell us

Where to Grow
Grow outdoors year-round in hardiness zone
Can be grown as an annual
Bloom Characteristics
Flowers are good for cutting
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

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
From seed; direct sow after last frost
Seed Collecting

Unknown - Tell us

Regional

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

Derby, Kansas

Louisville, Kentucky

Ludington, Michigan

Ronkonkoma, New York

Pineville, North Carolina

Salem, Oregon

Norristown, Pennsylvania

Charleston, South Carolina

North Augusta, South Carolina

Arlington, Tennessee

Christiana, Tennessee

Clarksville, Tennessee

Memphis, Tennessee

Lexington, Virginia

Newport News, Virginia

Pearisburg, Virginia

Menasha, Wisconsin

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Gardener's Notes:

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positives
0
neutral
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Anitabryk2
Long Island, NY (Zone 6b) | July 2007 | positive

Wintersowed very well. I love the unusual petal style. I hope it reseeds itself like some of my others have. Height is great as it sta...Read More

B
B
bigcityal
Appleton, WI (Zone 5a) | October 2006 | positive

I loved this plant, it remains to be seen if it overwinters here. The flowers are longlasting and there are a lot of them. This plant is ...Read More

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