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PlantFiles: Sweet Black-Eyed Susan
Rudbeckia subtomentosa 'Henry Eilers'

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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)
Cultivar: Henry Eilers

5 vendors have this plant for sale.

12 members have or want this plant for trade.

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Category:
Perennials

Height:
36-48 in. (90-120 cm)

Spacing:
3-6 in. (7-15 cm)
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 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)

Sun Exposure:
Full Sun

Danger:
Unknown - Tell us

Bloom Color:
Gold (Yellow-Orange)

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Drought-tolerant; suitable for xeriscaping
Flowers are good for cutting

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

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

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By wooffi
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By bigcityal
Thumbnail #6 of Rudbeckia subtomentosa by bigcityal

By floraphiliac
Thumbnail #7 of Rudbeckia subtomentosa by floraphiliac

There are a total of 13 photos.
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Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Anitabryk2 On Jul 1, 2007, Anitabryk2 from Long Island, NY (Zone 6b) wrote:

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 stands just above the phlox and tickseed. Looks great with the grey/green iris foliage.

Positive bigcityal On Oct 28, 2006, bigcityal from Menasha, WI (Zone 5a) wrote:

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 my tallest rudbeckia and did need staking in a windier site. 2007 - overwintered fine and is growing great.

Regional...

This plant has been said to grow 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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