Dahlia ‘Bishop of Llandaff’ – Growing Guide, Care & What to Expect
Dahlia ‘Bishop of Llandaff’ is one of the most iconic and recognisable dahlias grown in UK gardens. Loved for its deep red single flowers and dramatic dark, almost black foliage, it’s a true classic that has stood the test of time.
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🌱 Compost & Soil Improvers
Give your garden beds a boost before winter with compost and organic matter.
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🌿 Autumn Plant Feed & Fertiliser
Prepare your soil for autumn planting with suitable fertilisers and soil nutrients.
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🥬 Seed Trays & Propagation Kits
Keep growing through autumn by starting suitable hardy crops under cover.
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⭐ Recommended Products — 🌸 Dahlias & Growing Essentials
Dahlias are bold, colourful summer stars that reward you with months of flowers when started and cared for properly.
• Dahlia Tubers (Mixed or Named Varieties)
Choose from dinner-plate, pompon, cactus, or decorative dahlias — tubers give strong plants and reliable flowering through summer and autumn.
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• Dahlia Seed Collection
Ideal if you enjoy variety and surprises — seeds are great for growing lots of plants and discovering unique colours and forms.
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• Dahlia Plant Supports & Stakes
Tall dahlias need support to prevent snapping in wind and rain — sturdy canes, stakes, or ring supports are essential.
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• Free-Draining Compost & Soil Improver
Rich but well-drained compost helps dahlias establish strong roots and produce bigger, healthier blooms.
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• Dahlia Feed (High Potassium Fertiliser)
Supports flower production and prolongs blooming — feed regularly once plants start flowering for the best display.
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What Type of Dahlia Is ‘Bishop of Llandaff’?
‘Bishop of Llandaff’ is a single-flowered dahlia, which means:
- It has a single row of petals
- The central yellow disc is visible
- Flowers are highly attractive to bees and pollinators
It belongs to the famous Bishop series, all known for their dark foliage.
Flower Colour and Appearance
This variety is instantly recognisable for its strong colour contrast.
Key features include:
- Rich crimson to scarlet-red flowers
- Bright yellow central disc
- Dark purple-black foliage that sets off the blooms beautifully
The flowers are not huge, but they are incredibly striking en masse.
Height and Spread
Dahlia ‘Bishop of Llandaff’ is a medium-height dahlia.
Typical size:
- Height: around 90–120 cm
- Spread: around 45–60 cm
It works well in borders, wildlife-friendly gardens, and mixed planting schemes.
When Does Bishop of Llandaff Flower?
Flowering period:
- June or July
- Right through to October, until the first frosts
Regular deadheading will keep the plant flowering continuously.
How to Grow Dahlia ‘Bishop of Llandaff’
When to Plant
- Start tubers indoors in March or early April
- Plant outside in late April to May, once frost risk has passed
You can also grow this variety from seed, which is unusual for dahlias and very popular with gardeners.
Position
- Full sun gives the best colour and flowering
- Sheltered from strong winds
Soil
- Fertile, free-draining soil
- Improve with compost or well-rotted organic matter
Avoid planting in cold, waterlogged ground.
Caring for Bishop of Llandaff
This variety is relatively low maintenance.
- Water regularly during dry weather
- Feed every 1–2 weeks once flowering starts
- Deadhead spent blooms to encourage new flowers
- Stake if grown in exposed positions
Pinching out early growth can encourage bushier plants.
Is Bishop of Llandaff Hardy?
Like all dahlias, ‘Bishop of Llandaff’ is a tender perennial.
In the UK you should:
- Lift tubers after the first frost blackens the foliage
- Dry and store them frost-free over winter
In mild, free-draining gardens, plants may survive with heavy mulching, but this is not guaranteed.
Does Bishop of Llandaff Come Back Every Year?
Yes — Bishop of Llandaff is a perennial dahlia and will return each year if the tubers survive winter.
With correct overwintering:
- Plants often grow stronger each year
- Tubers multiply and can be divided in spring
- Flowering usually improves over time
Is Bishop of Llandaff Good for Wildlife?
Yes — it is excellent for pollinators.
- Single flowers allow easy access to pollen
- Bees and butterflies visit regularly
- A great choice for wildlife-friendly gardens
Final Thoughts on Dahlia ‘Bishop of Llandaff’
Dahlia ‘Bishop of Llandaff’ is a timeless garden favourite that combines bold colour, dramatic foliage, and pollinator-friendly flowers. Reliable, long-flowering, and easy to grow, it remains one of the best dahlias for UK gardens and allotments.