Photo by Melody

PlantFiles: Peony Dahlia
Dahlia 'Bishop of Llandaff'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Dahlia (DAHL-ya) (Info)
Cultivar: Bishop of Llandaff
Hybridized by Treseder; Year of Registration or Introduction: 1928

» View all varieties of Dahlias

5 vendors have this plant for sale.

4 members have or want this plant for trade.


Flower Size:
Small - 4 to 6 inches (100 to 150 mm) diameter

Bloom Color:
Red, Dark Red

Do not disbud

24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

18-24 in. (45-60 cm)

Grown for foliage

Other details:
Average Water Needs; Water regularly; do not overwater
Flowers are good for cutting
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Parts of plant are poisonous if ingested

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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By langbr
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There are a total of 8 photos.
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4 positives
No neutrals
No negatives

Gardeners' Notes:

Positive coriaceous On Feb 7, 2014, coriaceous from ROSLINDALE, MA wrote:

A dahlia for those who usually dislike dahlias.

This is the cultivar that helped make dahlias fashionable again. The leaves are smaller and less coarse than with most dahlias, and their purple/chocolate color is immensely useful in the border. The flowers are small(about 3" across), semi-double, glowing scarlet/warm red, and produced in profusion.

I find that where well grown this routinely reaches 6' or more in height. That too makes it more useful.

Great for cutting, great for the border!

Positive girlgroupgirl On Jun 30, 2007, girlgroupgirl wrote:

I was given this dahlia by a friend last year, to celebrate my Welsh heritage. It stayed fairly low, was rather floppy and did not produce many flowers. I was worried I had done something wrong! Dahlias do very well here, in general.
However, this year one Bishop is almost 6' tall, straight as an arrow and flowering it's fool head off. The other has remained 2' tall and was late to flower - and they are only a few feet apart.
But no worries, this is a GORGEOUS dahlia, and a beautiful accent in a tall, bright colored border. The foliage alone is worth growing it, and I would like to get others in the series!

This plant is hardy here.

Positive saya On Feb 21, 2007, saya from Heerlen
Netherlands (Zone 8b) wrote:

Lovely striking Dahlia with very dark foliage.
Grower: Treseder, Ian & S Treseder & Sons (Great Britain), 1928

Positive langbr On Jul 2, 2004, langbr from Olathe, KS (Zone 6a) wrote:

Planted tubers in zone 6 garden on June 3rd and first blooms appeared on June 18th! A glorious and striking burgundy (near black) foliage. This is a peony type dahlia that is one of the parents of today's popular 'Bishop's Children' dahlias.

This cultivar is named for Bishop Hughes of Llandaff (now Cardiff), Wales, UK and was introduced in 1924. It won the prestigious Award of Merit from the RHS in 1928.

As with all dahlias it must be dug and stored in cool, dry place over winter in zones colder than 8.


This plant has been said to grow in the following regions:

Atlanta, Georgia
Olathe, Kansas
Mandeville, Louisiana
Roslindale, Massachusetts
Keene, New Hampshire
Southold, New York
Columbus, Ohio
Grants Pass, Oregon
Portland, Oregon
Salem, Oregon
Seattle, Washington

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