Daylily '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
Registered or introduced: 1994
» View all varieties of Daylilies


24-36 in. (60-90 cm)


18-24 in. (45-60 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

By dividing rhizomes, tubers, corms or bulbs (including offsets)

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

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round


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

Randallstown, Maryland

Hatfield, Massachusetts

Dearborn Heights, Michigan

Hillsdale, Michigan

Waynesboro, Mississippi

Cut Bank, Montana

Elizabeth City, North Carolina

Felicity, Ohio

Grove City, Ohio

Ravenna, Ohio

Medford, Oregon

Christiana, Tennessee

Kalama, Washington

Dallas, Wisconsin

Madison, Wisconsin

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Gardeners' Notes:


On Jun 30, 2016, Gardener21 from Randallstown, MD wrote:

This one is definitely NOT overhyped! Don't listen to a grower that doesn't have it to sell. Several years ago I visited a commercial daylily grower when hundreds of different varieties were in bloom. This one outshown all the rest by a mile. I have to tell you that normally I hate orange flowers of all sorts, but I had to make an exception for this beauty. If you have only room for one daylily, this is the one to have.


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

Orange tangerine self with green throat.
(Tangerine Parfait Mauna Loa)

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


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.


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.


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.