Data specific to Daylilies (Edit)
AHS link: AHS Daylily Cultivar Info
Hybridizer: Stamile
Year of Registration or Introduction: 2003
Foliage type: Semi-evergreen
Scape height: 27 inches
Bloom size: 5.5 inches
Bloom time: Early midseason
Plant Traits: Rebloom
Diurnal
Early Morning Opener (EMO)
Bud Count: 21-25
Branching: 4-way
Bloom Traits: Edged
Bloom Form: Single
Color description: lavender with gold spiny edge above green throat
AHS Awards: Honorable Mention: 2007

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Flowers: Showy
Fragrant
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Tetraploid
Parentage: (Shimmering Elegance x Ed Brown) x Magic Lake
Child plants: 47 child plants

Image
Common names
  • Daylily

'Spiny Sea Urchin' was a featured
Plant of the Day for December 11, 2015.
Photo Gallery
Location: Winston-Salem, NC
Date: 2023-06-19
Late Morning Image; Anthers removed
Location: Winston-Salem, NC
Date: 2023-06-16
Late Morning Image
Location: my gardens
Date: 2013-07-20
Location: Enterprise, Al. 36330
Date: 2021-05-30

Photographed in hybridizer's garden, Florida
Location: Lincoln NE zone 5
Date: 2014-07-02
Location: Winston-Salem, NC
Date: 2023-06-16
Late Morning Image
Location: Tawas Michigan under the Pines

Photographed in the hybridizer's garden in Florida

Date: 2020-06-22
Location: Kairiai ,Siauliai, Lithuania
Date: 2022.07.27
Location: Waynesboro MS
Date: 2004-06-25
Location: Waynesboro MS
Date: 2006-01-20
Location: Beautiful Tennessee 
Date: June 13, 2014
pretty
Location: Melvindale, Mi. 48122
Date: Mid season 2011
Nice but not the spines that it gets in warmer climates. Also it
Uploaded by shive1
Location: Stone Mountain,GA
Date: 2015-06-13
Spiny Sea Urchin
Location: Stone Mountain,GA
Date: 2015-06-13
Spiny Sea Urchin
Location: Taken in my garden
Date: 2011-11-06
Location: Winston-Salem, NC
Date: 2011-07-06

Photo courtesy of Bill Jarvis
Location: Friend's garden, MI
Date: 2006-07-21
Location: Friend's garden, MI
Date: 2006-07-21
Location: Dreamy Daylilies - Chatham-Kent, Ontario   5b
Date: 2013-07-10
Location: Thoroughbred Daylilies, Greenhouse, Paris KY
© Shagbark Ridge Daylilies
Location: BX Creek Daylilies, Vernon, BC.
Photo by Gail Morgan of BX Creek Daylilies. Used with permission.
Location: Estonia
Date: 2021-07-18
Location: RavenCroft Cottage
Date: 2008-07-16

Photo Courtesy of Fairyscape Daylilies. Used with Permission
  • Uploaded by Joy
Location: Warne, NC
Date: 2019-06-23

Photo courtesy of Briscos' Best Blooms. Used with permission.
  • Uploaded by Joy

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

Date: 2004-08-27
Courtesy of Peace on Earth Gardens Used with permission
  • Uploaded by vic
Location: Stone Mountain,GA
Date: 2015-06-13
Spiny Sea Urchin
Location: Winston-Salem, NC
Date: 2016-07-06
Location: Winston-Salem, NC
Date: 2016-07-06

Date: 2010-06-24
Photo Courtesy of Lobo Rose and Daylily Gardens Used With Permiss
  • Uploaded by vic

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

Photo Courtesy of Crossview Gardens. Used with Permission.
  • Uploaded by Joy

Photo Courtesy of E and B Farm Used with Permission
  • Uploaded by vic
Comments:
  • Posted by RavenCroft (Central NY - Zone 5a) on Apr 11, 2013 7:50 PM concerning plant:
    The sepals on SSU rarely open well. They're predominately "boaters". & will keep the bloom from opening fully.
Plant Events from our members
BillAlleysDLs On July 24, 2015 Bloomed
beckygardener On October 4, 2015 Transplanted
Planted in raised bed.
beckygardener On August 29, 2015 Obtained plant
Received 3 fans from Susan - stilldew. Potted up.
Seedfork On May 15, 2019 Obtained plant
Received from Marcia "DaylilyDazzled" New York
2 Fans
Mlbdphillips On August 22, 2021 Obtained plant
Ohio Daylily Society
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