Data specific to Daylilies (Edit)
AHS link: AHS Daylily Cultivar Info
Hybridizer: Zahler
Year of Registration or Introduction: 2005
Foliage type: Dormant
Scape height: 30 inches
Bloom size: 6.5 inches
Bloom time: Midseason
Plant Traits: Rebloom
Diurnal
Early Morning Opener (EMO)
Bud Count: 41-45
Branching: 4-way
Bloom Traits: Self
Bloom Form: Single
Color description: lemon yellow self above green 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
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Ploidy: Diploid
Parentage: sdlg x sdlg

Image
Common names
  • Daylily

'Regal Yellow' was a featured
Plant of the Day for April 1, 2024.
Photo Gallery
Location: My garden, Pequea, Pennsylvania USA
Date: 2018-06-20
Regal Yellow's first bloom in my garden
Location:  
Date: 2007-06-09
Posted with permission from Ed Zahler http://icantbelieveitsadip.
Location: Haley Springs Farm
Date: 2022-08-05
Rebloom
Location: Haley Springs Farm
Date: 6/4/23
Wide branching
Location: Haley Springs Farm
Date: 2022-06-14
Stamens usually displayed in a wide array like this
Location: Haley Springs Farm
Date: 2021-06-25
Location: Haley Springs Farm
Date: 2022-07-31
Rebloom
Location: My garden, Pequea, Pennsylvania USA
Date: 2018-06-22
Location: Haley Springs Farm
Date: 2022-08-02
Hibiscus-like flatness
Location: My garden, Pequea, Pennsylvania, USA
Date: 2018-07-04

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