Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Louise Mercer
Hybridized by Joiner; Year of Registration or Introduction: 1973
» View all varieties of Daylilies  9 members have or want this plant for trade.
Height:
12-18 in. (30-45 cm)
Spacing:
15-18 in. (38-45 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)
Reblooming (Re)
Flower Size:
Large (more than 4.5" diameter)
Blooming Habit:
Diurnal (diu.)
Extended (ext.)
Flower Type:
Double
Bloom Color:
Rose/Mauve
Color Patterns:
Self
Flower Fragrance:
No fragrance
Foliage Habit:
Dormant (dor.)
Ploidy:
Diploid
Awards (if applicable):
Honorable Mention
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