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PlantFiles: Daylily
Hemerocallis 'Mauna Loa'

Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Cultivar: Mauna Loa
Hybridized by Roberts; Year of Registration or Introduction: 1976

» View all varieties of Daylilies

3 vendors have this plant for sale.

10 members have or want this plant for trade.

18-24 in. (45-60 cm)

15-18 in. (38-45 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:
Early midseason (EM)
Reblooming (Re)

Flower Size:
Large (more than 4.5" diameter)

Blooming Habit:
Diurnal (diu.)

Flower Type:

Bloom Color:

Color Patterns:

Flower Fragrance:
No fragrance

Foliage Habit:
Dormant (dor.)


Awards (if applicable):
Honorable Mention

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Thumbnail #1 of Hemerocallis  by poppysue

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There are a total of 26 photos.
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6 positives
No neutrals
No negatives

Gardeners' Notes:

Positive jmcbackyarddigger On Jun 28, 2011, jmcbackyarddigger from Anna, IL wrote:

I usually shy away from orange flowers. This one is a must. If you've seen the lava flow from "Mauna Loa" in Hawaii, you can understand how this plant got its name. LOVE THIS PLANT!!

Positive Bazuhi On Jun 9, 2011, Bazuhi from Downers Grove, IL (Zone 5a) wrote:

Loved the flowers on this daylily when I saw it at the local Home Depot so I had to it it to my collection in 2010. So far this year it has returned but not with the gusto of my other daylilies. I can't wait for the bright orange flower!

Positive braun06 On Mar 14, 2007, braun06 from Peoria Heights, IL (Zone 5b) wrote:

I was very pleased with this daylily. It is very nice looking. It may not repeat bloom but no repeat bloomer has a mixture of colors like this in our climate at least. It even has a fragrance which I was not expecting and it was quite noticable towards the end of the day.

Positive lilyq On Apr 11, 2006, lilyq from Fairfax, MN wrote:

Beautiful flower--draws your attention right away...grows very well in MN and has multiplied pretty fast for me.

Positive mystic On Jan 24, 2003, mystic from Ewing, KY (Zone 6a) wrote:

This has to be the brightest orange daylily. Has large 5" blooms that really add a bright spot to the garden.

Positive poppysue On Jan 21, 2003, poppysue from Westbrook, ME (Zone 5a) wrote:

Roberts (1976), 22" tall, 5" bloom

Mauna Loa is large, bright and dependable! You can't beat her for an inexpensive daylily.


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

Gaylesville, Alabama
Encino, California
Snellville, Georgia
Anna, Illinois
Downers Grove, Illinois
Hanna City, Illinois
Logansport, Indiana
Cedar Rapids, Iowa
Ewing, Kentucky
Hazard, Kentucky
Hebron, Kentucky
Durham, Maine
Dearborn Heights, Michigan
Gladwin, Michigan
Hemlock, Michigan
Fairfax, Minnesota
Auburn, New Hampshire
Southold, New York
Morehead City, North Carolina
Raleigh, North Carolina
North Ridgeville, Ohio
Uniontown, Ohio
Hulbert, Oklahoma
Freedom, Pennsylvania
Norristown, Pennsylvania
Waterbury Center, Vermont
Falls Church, Virginia
Kalama, Washington
Fond Du Lac, Wisconsin
Madison, Wisconsin
Milwaukee, Wisconsin
Mount Horeb, Wisconsin

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