Daylily
Hemerocallis 'Black Eyed Susan'

Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Black Eyed Susan
Hybridized by Stevens
Registered or introduced: 1983
» View all varieties of Daylilies

Height:

24-36 in. (60-90 cm)

Spacing:

18-24 in. (45-60 cm)

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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:

Full Sun

Sun to Partial Shade

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

Bloom Time:

Midseason (M)

Flower Size:

Large (more than 4.5" diameter)

Blooming Habit:

Diurnal (diu.)

Flower Type:

Single

Bloom Color:

Pale Yellow

Bright Yellow

Color Patterns:

Eyezone

Flower Fragrance:

No fragrance

Foliage Habit:

Dormant (dor.)

Ploidy:

Tetraploid

Awards (if applicable):

Honorable Mention

Regional

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

Loveland, Colorado

Norwich, Connecticut

Trenton, Florida

Ewing, Kentucky

Coushatta, Louisiana

Durham, Maine

Linthicum Heights, Maryland

Revere, Massachusetts

Gladwin, Michigan

Excelsior, Minnesota

Minneapolis, Minnesota

Auburn, New Hampshire

Munsonville, New Hampshire

Ravenna, Ohio

Linden, Virginia

Penhook, Virginia

Richmond, Virginia

Bothell, Washington

Kalama, Washington

Marion, Wisconsin

Tomah, Wisconsin

Casper, Wyoming

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Gardeners' Notes:

3
positives
1
neutral
0
negatives
RatingContent
Positive

On Jun 7, 2011, mbabbitt from Bothell, WA wrote:

This plant blooms its heart out in my front yard where it gets full sun till about 5 in the evening. In 6 years, it has yet to disappoint. In my yard, it blooms from July to early August, with a little rebloom. I wish all daylilies were as profuse and dependable as Black Eyed Susan. I give it a dose of 4-10-10 every March to get it started.

Positive

On Mar 14, 2005, sybiltwo from Excelsior, MN (Zone 4a) wrote:

This one is one of my most consistant rebloomers here in my zone 4 garden. It is one of the first to bloom and one of the last to still be blooming. It's a regular "Energizer Bunny".

Neutral

On Nov 2, 2003, carolann from Auburn, NH wrote:

Stevens - 5.5" bright yellow bloom with red/purple eye, mid-season bloom, 26" scapes, dormant, tet

Positive

On Jul 1, 2003, mystic from Ewing, KY (Zone 6a) wrote:

Last year was the first year for me with this one. I liked it then but really love it this year it's been a good bloomer. The color has more of a orange tint to it this year. Could be the weather we have had this year.