Photo by Melody

PlantFiles: Daylily
Hemerocallis 'Primal Scream'

Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Primal Scream
Hybridized by Hanson; Year of Registration or Introduction: 1994

» View all varieties of Daylilies

4 vendors have this plant for sale.

16 members have or want this plant for trade.

24-36 in. (60-90 cm)

24-36 in. (60-90 cm)

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:

Propagation Methods:
By dividing the rootball

Bloom Time:
Late Midseason (MLa)

Flower Size:
Large (more than 4.5" diameter)

Blooming Habit:
Diurnal (diu.)

Flower Type:
Crispate (pinched, twisted or quilled floral segments)
Cascading (narrow curling or cascading segments)
Unusual Form

Bloom Color:

Color Patterns:

Flower Fragrance:
No fragrance

Foliage Habit:
Dormant (dor.)


Awards (if applicable):
Stout Silver Medal
Lambert/Webster Award (or runner-up)
Award of Merit (or runner-up)
Honorable Mention

Click thumbnail
to view:

By Calif_Sue
Thumbnail #1 of Hemerocallis  by Calif_Sue

By Joy
Thumbnail #2 of Hemerocallis  by Joy

Thumbnail #3 of Hemerocallis  by EROCTUSE2

By DaylilySLP
Thumbnail #4 of Hemerocallis  by DaylilySLP

By DaylilySLP
Thumbnail #5 of Hemerocallis  by DaylilySLP

By linthicum
Thumbnail #6 of Hemerocallis  by linthicum

By ownedbycats
Thumbnail #7 of Hemerocallis  by ownedbycats

There are a total of 25 photos.
Click here to view them all!


3 positives
1 neutral
No negatives

Gardeners' Notes:

Positive DaylilySLP On Oct 28, 2013, DaylilySLP from Dearborn Heights, MI (Zone 6a) wrote:

AHS has announced 'Primal Scream'
has won President's Cup Award 2013

Neutral pointgarden On Mar 14, 2012, pointgarden from Newport, RI wrote:

A nice orange,nice form but over hypted.There are other daylilies with bold orange flowers that are less expensive and easy to find.Don't forget to support your local independent garden shops.

Positive kentstar On Jul 28, 2010, kentstar from Ravenna, OH (Zone 5b) wrote:

Beautiful dalily and very vibrant. Does ok for me. Quite a slow grower for me though. I don't know why. It's the second year in the ground, but could be that because I did move it last year, that it just needs more time to adjust and become more vigorous. A keeper for sure. Large blooms.

Now I know why it was a slow grower for me. I lifted the dl and replanted a little higher in the ground and it took off! :)
Big, bold blooms! A real standout in the garden.

Positive bluektodd On Sep 10, 2004, bluektodd from Hillsdale, MI (Zone 5b) wrote:

Primal scream is very hardy mine had 4 way branching and 22 buds in its first year. Multiplies fast. Not many photos can capture its true color. Even if orange isn't your favorite color this one will really stand out in your garden.


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

San Jose, California
Fort Lauderdale, Florida
Athens, Georgia
Coatesville, Indiana
Solsberry, Indiana
Iowa City, Iowa
Topeka, Kansas
Hazard, Kentucky
Hebron, Kentucky
Linthicum Heights, Maryland
Hatfield, Massachusetts
Dearborn Heights, Michigan
Hillsdale, Michigan
Waynesboro, Mississippi
Cut Bank, Montana
Elizabeth City, North Carolina
Felicity, Ohio
Grove City, Ohio
Ravenna, Ohio
Christiana, Tennessee
Kalama, Washington
Dallas, Wisconsin
Madison, Wisconsin

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