Dahlia

Dahlia spp.

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Dahlias produce some of the most spectacular flowers in the garden from mid-summer until first frost. Lift tubers in autumn in cold climates and store frost-free.

Common Problems

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

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Wiltingchevron_right

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Holes In Leaveschevron_right

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Black Spotschevron_right

Care Guide

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Light

Full sun.

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Water

Regularly and deeply — keep evenly moist.

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Soil

Rich, well-draining soil.

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Fertiliser

High-potash feed every 2 weeks from July.

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Temperature

Not frost hardy. Plant tubers after last frost.

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Humidity

Moderate.

Toxicity

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Mildly toxic if large amounts ingested.

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.