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PlantFiles: Daylily
Hemerocallis 'Radiation Biohazard'

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Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Radiation Biohazard
Hybridized by Gossard; Year of Registration or Introduction: 2000

» View all varieties of Daylilies

3 members have or want this plant for trade.

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

Spacing:
24-36 in. (60-90 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:
Unknown - Tell us

Propagation Methods:
By dividing the rootball

Bloom Time:
Midseason (M)

Flower Size:
Large (more than 4.5" diameter)

Blooming Habit:
Diurnal (diu.)

Flower Type:
Crispate (pinched, twisted or quilled floral segments)
Unusual Form

Bloom Color:
Bright Yellow
Maroon (Purple-Brown)

Color Patterns:
Bicolor

Flower Fragrance:
Slightly Fragrant

Foliage Habit:
Dormant (dor.)

Ploidy:
Diploid

Awards (if applicable):
Honorable Mention

Click thumbnail
to view:

By DaylilySLP
Thumbnail #1 of Hemerocallis  by DaylilySLP

By mystic
Thumbnail #2 of Hemerocallis  by mystic

By sadie_mae
Thumbnail #3 of Hemerocallis  by sadie_mae

By jessmerritt
Thumbnail #4 of Hemerocallis  by jessmerritt

By daylily970
Thumbnail #5 of Hemerocallis  by daylily970

By Joy
Thumbnail #6 of Hemerocallis  by Joy

By Joy
Thumbnail #7 of Hemerocallis  by Joy

There are a total of 9 photos.
Click here to view them all!

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive DaylilySLP On Sep 24, 2004, DaylilySLP from Dearborn Heights, MI (Zone 6a) wrote:

This flower is 9 inches across!!!

Regional...

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

Salvisa, Kentucky
Dearborn Heights, Michigan
Sandown, New Hampshire
Roswell, New Mexico
Coshocton, Ohio
Greenwich, Ohio
Kalama, Washington



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