Data specific to Daylilies (Edit)
AHS link: AHS Daylily Cultivar Info
Hybridizer: Durio
Year of Registration or Introduction: 1977
Foliage type: Evergreen
Scape height: 25 inches
Bloom size: 6 inches
Bloom time: Early midseason
Plant Traits: Extended Bloom
Rebloom
Rust Resistance: Shows Susceptibility
Rust Resistance Decimal Score: 2.5
Bloom Traits: Self
Bloom Form: Single
Color description: near white self with lime green throat
AHS Awards: Award of Merit: 1984
Honorable Mention: 1981
JC: 1977
LAA: 1990

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Flowers: Showy
Fragrant
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Diploid
Parentage: Loving Memories x Little Infant)
Child plants: 198 child plants

Image
Common names
  • Daylily

'Joan Senior' was a featured
Plant of the Day for November 27, 2015.
Photo Gallery
Location: My garden, Baltimore MD
Date: 2017-06-28
Location: Statesboro, Georgia
Date: 2020-05-22
Location: garden-an excellent white
Date: 2015-12-20
Location: My full sun West daylily bed zone 9
Date: 2019-09-11
After 3 months of blooms these are last 3 on last scape
Location: BX Creek Daylilies, Vernon, BC.
Photo by Gail Morgan of BX Creek Daylilies. Used with permission.
Photo by Avedon
Location: Garden of eScapes Bellevue KY
Date: 2015-07-13
Location: Koeln,  Germany
Date: 2015
Location: Estonia
Date: 2021-07-17
Location: Garden of eScapes Bellevue KY
Date: 2017-06-24
Location: Stoneham MA
Date: July 30, 2020
Location: Tyler, TX
Date: 2021-06-13
Location: Nora's Garden - Castlegar, B.C.
Date: 2013-07-24
 - Good substance to the petals, with a light ruffle at the edge.
Photo by Lucichar
Location: Stoneham MA
Date: July 31, 2022
Location: From my collection. Poland.
Date: 2019-07-02
Location: Manitoba, Canada
Date: 2016-07-28
Location: WA
Location: Clinton, Michigan 49236
Date: 2017-10-21
"Hemerocallis 'Joan Senior', 2017, Near White [Daylily], hem-ur -
Location: Shamong, NJ
Date: 2017-06-22
After the rain...
Location: Mark's Park (home) zone 6a
Date: 2021-07-12
Joan Senior. Changes during season and yard location
Location: Stoneham MA
Date: 2017-07-09
Location: Stoneham MA
Date: 2023-07-21
Joan Senior

Posted with permission and photographed by Tee Money http://www.h
  • Uploaded by vic
Location: Stoneham MA
Date: 2017-07-12

Photo Courtesy of Homestead Farms Nursery. Used with Permission.
  • Uploaded by Joy
Location: Manitoba, Canada
Date: 2015-07-22
Location: Estonia
Date: 2021-07-17
Location: My zone 5 garden
Date: 2016-07-19
Location: My day lily bed
Date: 2016-06-06
Location: My zone 5 garden.
Date: 2018-07-22
Location: Becket, MA
Date: 8/4/2022
Joan Senior at dawn
Photo by MaryDurtschi
Photo by Avedon
Location: North Carolina
Date: 2022-06-19
Joan Senior
Photo by kimkats
Location: Lower Saxony, Germany
Date: 2016-07-19
Location: My zone 5 garden
Date: 2016-07-15
I think this is the whitest flower I have.
Location: Macleay Island, Queensland, Australia
Date: 2013-11-15
Location: Private Daylily Garden, MI
Date: 2006-07-28

Photo Courtesy of Mystic Meadows Daylily Farm. Used with Permissi
  • Uploaded by Joy
Location: home
Date: 2014-07-06
One of the whitest of those claiming to be near white.
Location: home
Date: 2014-07-06
One of the whitest of those claiming to be near white.
Location: home
Date: 2014-07-06
One of the whitest of those claiming to be near white.
Photo by jaymalick
Location: Gulf-coast Texas
Date: 2015-04-19
Location: My house in Portsmouth.
Date: 2012-08-25
Joan Senior
Location: 382 River Road, Pequea, PA 17565
Date: August 1, 2015
Reliable and beautiful; does well in part shade in my garden

Photo Courtesy of Wood-Eden Daylilies & Cannas. Used with Permiss
  • Uploaded by Joy
Location: SE Michigan
Date: July 2015

Date: 2007-06-22
Posted with permission and photographed by Tanarae Tomlinson http
  • Uploaded by vic

Posted with permission and photographed by Jim Healey http://www.
  • Uploaded by vic
Location: Maine
Date: 2013-07-12

Photo courtesy of Daylilies of Kenefick
Photo by bron
Location: my zone 5 garden
Date: 2016-07-28

Date: June 17, 2017
Location: my garden 
Date: 2013-06-22
Location: Clinton, Michigan 49236
Date: 2017-10-21
"Hemerocallis 'Joan Senior', 2017, Near White [Daylily], hem-ur -
Location: Dreamy Daylilies - Chatham-Kent, Ontario   5b
Date: 2013-07-17

Date: 2004-07-29
Location: SE Michigan
Date: July 2015
Photo by Ditchlily

Photo Courtesy of May's Acres Daylilies. Used with Permission.
  • Uploaded by Joy

Posted with permission and photographed by Marianne Joordens http
  • Uploaded by vic

Photo Courtesy of Daredevil Daylilies. Used with Permission
  • Uploaded by Joy
Location: my garden - square bed
Date: 2014-06-03

Photo Courtesy of Nova Scotia Daylilies Used with Permission
  • Uploaded by vic
Location: Private Daylily Garden, MI
Date: 2006-07-28
Location: Private Daylily Garden, MI
Date: 2006-07-16
Location: my zone 5 garden
Date: 2016-07-07
very first bloom on a 1 year old plant.
Location: Cumming, GA
Date: 2019-08-02
Location: my zone 5 garden
Date: 2016-07-25

Photo Courtesy of E and B Farm Used with Permission
  • Uploaded by vic

Photo Courtesy of Nottawasaga Daylilies. Used with Permission.
  • Uploaded by Joy

Courtesy of Peace on Earth Gardens Used with permission
  • Uploaded by vic

Image Courtesy of Bloomin Designs Nursery Used with Permission
  • Uploaded by vic

Photo Courtesy of Island Daylily Farm. Used with Permission.
  • Uploaded by Joy

There is one more image of this plant. Click to view them.

This plant is tagged in:
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Comments:
  • Posted by DeweyRooter (southeast Georgia - Zone 8b) on Jun 10, 2021 9:45 AM concerning plant:
    I am in zone 8b, and Joan Senior is one of my absolute favorites. She grows and spreads prolifically here, and her bloom period is quite long. Blooms are always perfect, and the foliage is attractive all winter.

    I did have a bad rust outbreak in April this year, and Joan was severely affected. I cut all the fans back and treated with Green Magic. She has recovered and is putting on an impressive bloom show in June.
  • Posted by tabbycat (Youngsville, LA - Zone 9b) on Jun 10, 2018 5:24 PM concerning plant:
    In bloom now (June 10, '18) since mid May in south Louisiana. I believe its breeder, Durio, is a south LA native in a town nearby. 'Joan Senior' is plain but elegant, standing tall and being the palest yellow that looks white from 5' away. My flowers are 5", and not 6" as recorded. Maybe they'll be larger as it gets more established this year. I've only had it since last fall, so I'm excited to see its reblooming schedule. It's similar to the 'Ice Carnival' I have, too, but 'Joan' is not as tall.
  • Posted by DeweyRooter (southeast Georgia - Zone 8b) on Jun 8, 2022 7:04 AM concerning plant:
    Since my earlier comment, I have had to get rid of my beautiful Joan Senior plants, which were among my very favorites. I thought I had solved the rust problem, but I hadn't. Unless you are willing to spray regularly with fungicides, I wouldn't plant this one if you are in the South. I regret saying this since the plant is beautiful and an excellent bloomer and increaser.
Plant Events from our members
piksihk On June 16, 2023 Plant Ended (Removed, Died, Discarded, etc)
value4dollars On May 1, 2014 Obtained plant
DIP
tabbycat On May 24, 2022 Bloomed
1st for2022
tabbycat On July 12, 2021 Miscellaneous Event
Found proliferation plantlets just starting on some stems. Never noticed in past years but will cut in a few weeks when I see roots on plantlets
tabbycat On May 15, 2021 Bloomed
tabbycat On April 1, 2021 Bloomed
Bloomed 2 months
tabbycat On May 5, 2019 Bloomed
1st of 2019 til late Aug. Took a tagged pic
Mellis0821 On June 5, 2019 Bloomed
Bloomed at my house, much weaker than Alexa's. I should probably have watered more.
Mellis0821 On June 2, 2019 Bloomed
First day of bloom at Alexa's
DeweyRooter On September 6, 2021 Plant Ended (Removed, Died, Discarded, etc)
Dug up and donated to a northern home. Since plants were so susceptible to rust, I decided to replace them with near-whites that were more rust-resistant.
DeweyRooter On September 29, 2019 Obtained plant
Received large plant from Oakes Daylilies as part of Evergreen Collection. Divided in two and planted in bed.
Mlbdphillips On August 22, 2021 Obtained plant
Ohio Daylily Society
SuperHappyCamper On October 21, 2021 Obtained plant
Received from tabbycat
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