Zinnia

Zinnia elegans

flower

verifiedReviewed by the GreenScout Team

Zinnias are bright, heat-loving annuals that bloom in vivid colours all summer. They are fantastic for cutting gardens and attract butterflies and bees.

Common Problems

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

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Powdery Mildewchevron_right

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Black Spotschevron_right

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Yellow Leaveschevron_right

Care Guide

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Light

Full sun.

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Water

Regularly at soil level. Avoid wetting foliage.

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Soil

Well-draining, fertile soil.

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Fertiliser

Balanced feed every 3–4 weeks.

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Temperature

21–30°C (70–86°F). No frost.

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Humidity

Low to moderate.

Toxicity

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Non-toxic.

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

Why does my Zinnia get powdery mildew so often?

Watering at soil level rather than overhead helps a lot — wetting the foliage encourages powdery mildew and blight, both of which are listed risks for this heat-loving annual.