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Dahlia Bishop

Dahlia 'Bishop of Llandaff'

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verifiedReviewed by the GreenScout Team

An award-winning dahlia cultivar featuring vibrant scarlet-red semi-double flowers with dark maroon foliage that provides striking color contrast. Growing 90–120 cm tall, it blooms prolifically from midsummer until the first frost. This variety is excellent for cutting, garden display, and attracts pollinators; the dramatic foliage makes it a standout specimen plant.

Common Problems

Select the problem your Dahlia Bishop is experiencing to get a treatment guide.

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Powdery Mildewchevron_right

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Yellow Leaveschevron_right

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Wiltingchevron_right

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Slow Growthchevron_right

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Holes In Leaveschevron_right

Care Guide

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Light

Full sun; requires 8+ hours of direct sunlight daily for vigorous growth and abundant flowering

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Water

Regular watering; keep soil consistently moist during growing season. Water deeply at the base, avoiding foliage. Reduce watering as temperatures cool in autumn

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Soil

Well-draining, fertile soil rich in organic matter. pH 6.0–7.0 preferred. Add compost or well-rotted manure before planting

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Fertiliser

Feed every 2–3 weeks during growing season with balanced fertilizer or fertilizer higher in potassium to boost flowering. Stop feeding by late summer

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Temperature

Tender perennial; thrives in 18–28°C. Very frost-sensitive; lift tubers and store indoors over winter in cold zones

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Humidity

Moderate to high humidity preferred; ensures vigorous growth. Ensure good air circulation to prevent fungal diseases

Toxicity

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Non-toxic; safe for all household members and pets

Common Diseases

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Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

What makes Dahlia Bishop stand out from other dahlias?

Its dark maroon foliage provides striking color contrast against vibrant scarlet-red semi-double flowers — a dramatic combination that makes this award-winning cultivar a standout specimen plant.

Why do I need to store my Dahlia Bishop tubers indoors for winter?

It's very frost-sensitive — in cold zones the tubers must be lifted and stored indoors over winter since they won't survive freezing ground temperatures.