Data specific to Daylilies (Edit)
AHS link: AHS Daylily Cultivar Info
Hybridizer: Mahieu
Year of Registration or Introduction: 2003
Foliage type: Dormant
Scape height: 40 inches
Bloom size: 7 inches
Bloom time: Midseason-Late
Plant Traits: Rebloom
Early Morning Opener (EMO)
Bud Count: 46 & over
Branching: 9-way or more
Bloom Traits: Eye or Band
Bloom Form: Unusual Form
Unusual Form - Crispate
Color description: clear medium violet with violet purple eye above neon lemon lime throat

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 3 -40 °C (-40 °F) to -37.2 °C (-35)
Flowers: Showy
Fragrant
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Diploid
Parentage: (Orchid Corsage x H. citrina) x Grapeade
Child plants: 5 child plants

Image
Common names
  • Daylily

Photo Gallery
Location: Iowa
Location: Iowa
Location: France, Normandie
Date: 2019
Location: Denver, Colorado Zone 5b
Date: 2022-07-22

Photo courtesy of MaryAnn Pruden of Lily House

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

Date: 2009-08-09
Photo Courtesy of Nova Scotia Daylilies Used with Permission
  • Uploaded by vic
Location: Friend's Garden, SE Michigan
Date: 2012-08-06

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

Photo courtesy of Northern Lights Daylilies

Photo Courtesy of Red Lane Daylily Gardens. Used with Permission
  • Uploaded by Joy

Photo Courtesy of Lilywood Farms. Used with Permission.
  • Uploaded by Joy
Photo by Lilydaydreamer

Photo courtesy of Briscos' Best Blooms. Used with permission.
  • Uploaded by Joy
Comments:
  • Posted by caitlinsgarden (McGregor IA - Zone 4b) on Aug 6, 2015 4:25 PM concerning plant:
    Thorhalla has several huge proliferations this year. It is a tall dramatic plant that is a great grower.
  • Posted by DogsNDaylilies (SE Michigan - Zone 6a) on May 22, 2018 10:08 AM concerning plant:
    Thorhalla *seems* to be taking pollen from tetraploid parents. I will try to confirm this as time goes on, but I spent the beginning of last season thinking Thorhalla was tet and pollinated with tet pollen, only to realize my mistake, but still end up with seeds. (So far, I got seeds from Thorhalla that had pollen parents Duck's Dark Side and from Aerial Applique.) I'll only know for sure if/when the seedlings grow out and I can see if the seedlings resemble their supposed pollen parents.

    If anyone else has Thorhalla and wants to run some tet crossing experiments, please let me know how it turns out for you!

« Add a new plant to the database

» Search the Daylilies Database: by characteristics or by cultivar name

« See the general plant entry for Daylilies (Hemerocallis)

« Visit the Daylilies forum

» Read our note about daylily rust scores

« The Daylilies Database Front Page

« The Plants Database Front Page

Today's site banner is by mcash70 and is called "Queen Ann's Lace"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.