Daylily 'Joan Senior'

Hemerocallis

Family
Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee)
Genus
Hemerocallis (hem-er-oh-KAL-iss)
Synonym
Spacing
24-36 in. (60-90 cm)
Hardiness
18-24 in. (45-60 cm)
Sun Exposure
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)
Bloom Color
Full Sun
Sun to Partial Shade
Bloom Time
Other Details
Propagation Methods
Soil pH requirements
White/Near White
Flower Fragrance
Flower Size
Flower Type
By dividing the rootball
Blooming Habit
Foliage Habit
Color Patterns
Awards (if applicable)
Patent Information
Foliage Color
Bloom Characteristics
Water Requirements
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

Dothan, Alabama

San Jose, California

Yorba Linda, California

Denver, Colorado

Waterbury, Connecticut

Bartow, Florida

Miccosukee Cpo, Florida

Tucker, Georgia

Eastport, Idaho

Galva, Illinois

Hazel Crest, Illinois

Jacksonville, Illinois

Oak Park, Illinois

Peoria, Illinois

Elkhart, Indiana

Solsberry, Indiana

South Bend, Indiana

Cedar Rapids, Iowa

Nichols, Iowa

Ewing, Kentucky

Hebron, Kentucky

Salvisa, Kentucky

Ferriday, Louisiana

Durham, Maine

South China, Maine

Adamstown, Maryland

Hughesville, Maryland

Clawson, Michigan

Dearborn Heights, Michigan

Gladwin, Michigan

Royal Oak, Michigan

Duluth, Minnesota

Excelsior, Minnesota

Waynesboro, Mississippi

Brunswick, Missouri

Lebanon, Missouri

Auburn, New Hampshire

Croton On Hudson, New York

Endicott, New York

Southold, New York

Waterville, New York

Oxford, North Carolina

Raleigh, North Carolina

Ravenna, Ohio

Rockbridge, Ohio

Uniontown, Ohio

Hulbert, Oklahoma

Renfrew, Pennsylvania

Columbia, South Carolina

Conway, South Carolina

North Augusta, South Carolina

Simpsonville, South Carolina

Hixson, Tennessee

Chandler, Texas

Gilmer, Texas

Houston, Texas

Richmond, Texas

Linden, Virginia

Richmond, Virginia

Stuarts Draft, Virginia

Green Bay, Wisconsin

show all

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Gardener's Notes:

7
positives
2
neutrals
1
negative
Sort By:
Sort By:
V
(Zone 8a) | May 2021 | positive

What a workhorse!

B
Irving, TX (Zone 8a) | June 2010 | positive

I like white flowers but like them in daylilies. This one is still nice. The flowers dont hold up to rain well as on other daylily cultivars.

C
Duluth, MN | September 2009 | positive

I planted Joan Senior in spring 2008. She didn't do much that first year--I think I got a total of three blooms--but she took hold, over...Read More

F
springfield area, MO (Zone 5b) | January 2009 | neutral

I gave this a neutral because the blooms do not get quite as big for me as listed. It is a very heavy bloomer for me. There are now many...Read More

M
M
Durham, ME (Zone 3a) | January 2009 | positive

Joan Senior was a very slow starter in my garden but now it is looking like it should. Hardy enough to stay in my wooden raised beds and...Read More

R
Clawson, MI | October 2006 | negative

Aparently it needs growing conditions which the south side if my house never provided. It grew rather slowly for me and always flowered b...Read More

G
Dothan, AL | July 2003 | positive

"joan senior" has done great in my garden, it is a terrific rebloomer and i dont think there could be a better white one in my garden.

C
Oxford, NC | July 2003 | positive

I stuck this one in very heavy clay soil, in a very crowded bed, tucked under a butterfly bush. Geez, is it ever a beautiful surprise whe...Read More

M
M
Ewing, KY (Zone 6a) | January 2003 | neutral

6" white blooms, 25" scapes

C
| September 2002 | positive

too bad there isn't a choice for "very positive". lots of daylilies are pretty and good in the garden, but this one really stood out for...Read More

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