Daylily 'White Mountain'


Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: White Mountain
Hybridized by Stamile
Registered or introduced: 2006
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24-36 in. (60-90 cm)


18-24 in. (45-60 cm)


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)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 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

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

Bloom Time:

Early midseason (EM)

Reblooming (Re)

Flower Size:

Large (more than 4.5" diameter)

Blooming Habit:

Diurnal (diu.)

Flower Type:


Bloom Color:

White/Near White

Color Patterns:


Flower Fragrance:

No fragrance

Foliage Habit:

Evergreen (ev.)



Awards (if applicable):

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


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

Waynesboro, Mississippi

Gardeners' Notes:


On Aug 14, 2015, DaylilySLP from Dearborn Heights, MI (Zone 6a) wrote:

White self above green throat.


On Oct 6, 2006, Calif_Sue from Northern California
United States (Zone 9a) wrote:

Hybridizer notes:

WHITE MOUNTAIN (Stamile,P.) TET [(Victorian Lace x Michael Miller) X Spectral Elegance] 28 EMRe. early morning opener. Evr. 6 bloom, 4-way branching. 28 buds.
Our best white to date. While it still has a tinge of pink, it has less than ARCTIC LACE and at the end of the day it is snow white.
WHITE MOUNTAIN is simply the culmination of years of trying to make white daylilies that are both beautiful flowers and great garden plants. A must for those breeding white daylilies or having a white garden and a strong recommendation for all daylily growers whom miss the cooling effect of white in the garden. Fertile both ways