Data specific to Dahlias (Edit)
Form: Peony-flowering (PE)
Color: Dark Red (DR)
Year Introduced: 1927
Country of Origin: United Kingdom
Hybridizer or Originator: Treseder
ADS Classification Code: 8007

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Maximum recommended zone: Zone 11
Plant Height: 2 feet
Plant Spread: 2-3 feet
Leaves: Unusual foliage color
Other: Foliage: Black, Purple/Burgundy
Flowers: Showy
Flower Color: Red
Bloom Size: 4"-5"
5"-6"
Flower Time: Summer
Late summer or early fall
Fall
Underground structures: Tuber
Wildlife Attractant: Bees
Propagation: Seeds: Will not come true from seed
Propagation: Other methods: Division
Other: Propagate by taking cuttings of newly emerged shoots
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Awards and Recognitions: RHS AGM

Image
Common names
  • Dahlia
  • Single Dahlia
  • The Bishop
  • Peony Dahlia

Photo Gallery
Location: Oxfordshire, England
Date: 2015-10-25
Location: The garden at Sanabria
Date: 2014-07-21
Very nice example of the young bloom. a better photo when the pol
Location: Lincolnshire, England, UK
Date: 22 September 2011
Bishop of Landaff
Location: Nationale Plantentuin Meise (Meise Botanical Garden)
Date: 2023-10-16
Location: SunZone 6a
Date: 2013-06-30
Location: Halls of Heddon, Newcastle UK
Date: 2020-09-08
Location: The Garden at Sanabria
Date: July 
Beautiful very popular dark foliage dahlia, very highly recommend
Location: Northern Germany
Date: 2018-09-09

photo credit: Wouter Hagens
Location: Royal Botanic Gardens, Kew
Date: 2017-10-10
Location: Halls of Heddon, Newcastle UK
Date: 2020-09-08
Location: Lincolnshire, England, UK
Date: 22 September 2011
Bishop of Landaff
Location: l
Date: 2011-1004
Location: Lily fence - full sun
Date: 2007-0824
Location: Halls of Heddon, Newcastle UK
Date: 2021-09-13
Location: Lily fence - full sun
Date: 2007-0824
Location: central Illinois
Date: 2015-05-07
Location: The garden at Sanabria
Date: 2014-07-21
Excellent foliage on this particular plant. An excellent example
Location: Botanical garden UG, Gent, Belgium
Date: 2015-09-06
Location: Botanical garden UG, Gent, Belgium
Date: 2015-09-06

Photo courtesy of Longfield Gardens
  • Uploaded by Joy

Photo Courtesy of Longfield Gardens. Used with Permission
  • Uploaded by Joy
Location: SunZone 6a
Date: 2013-06-30
Location: SunZone 6a
Date: 2013-06-30
Location: At Dalieda de San Francisco (a dahlia garden) in Madrid (Spain)
Photo by Luis García
Location: The garden at Sanabria
Date: 2014-07-21
A single bloom , exceptional tuber, excellent colour depth and bl
Comments:
  • Posted by pirl (Southold, Long Island, NY - Zone 7a) on Dec 2, 2013 12:50 PM concerning plant:
    At the end of the season I made the mistake of not dividing the plant. The tubers had grown into several plants and should have been divided. It grew itself to death (sounds silly, I know) the following year. Unless dahlias are divided, regardless of the growing zone, the ball of tubers can't get sufficient nutrients to survive. People will notice fewer and fewer blooms and attribute it to something other than the true cause - they do need to divide dahlias.
  • Posted by FPF (Warren County, Kentucky, USA - Zone 6b) on May 22, 2022 6:34 PM concerning plant:
    B of L can be VERY hard to keep, and rots for many people. In past visits to Swan Island, even their rows had a lot of empty space where they were growing B of L plants for their catalog tuber sales.
Plant Events from our members
lovesblooms On May 27, 2015 Plant emerged
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Discussion Threads about this plant
Thread Title Last Reply Replies
Not the Bishop of Llandaff by Cantillon Jul 21, 2013 9:16 PM 0
Not the Bishop of Llandaff by Cantillon Jul 21, 2013 9:20 PM 0
Not the Bishop of Llandaff by Cantillon Nov 22, 2013 11:59 AM 10
We can do better than this by Cantillon Dec 4, 2013 12:23 PM 7

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