Sweet Black-Eyed Susan
Rudbeckia subtomentosa 'Henry Eilers'

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
View this plant in a garden

Category:

Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Flowers are fragrant

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us

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:

Unknown - Tell us

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

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

show all

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

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

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.