What pests attack zinnia?

Broad mite, Leaf Miner, Two-spotted spider mite, Whitefly

What diseases affect zinnia?

Grey mould, Cercospora leaf spot

Zinnia pests and diseases: how to recognise them

Q: Which zinnia problems need quick action?

Grey mould: On strawberries, grapes and other soft fruit a soft brown rot, often as the fruit ripens; on gooseberries whole branches die.

Zinnia elegans

The pests, diseases and disorders recorded for zinnia in our library, each with a photo and its first symptom. Every page has the full list of symptoms, organic and chemical treatment and prevention.

At a glance

Problems in total	6
Pests	4
Diseases	2
Need quick action	1

How to grow zinnia · All pests and diseases

Pests

Broad miteGrowing tips and buds are killed and new growth is stunted — easily mistaken for disease or herbicide damage.Photo: David Riley, University of Georgia, Bugwood.org, CC BY 3.0, Wikimedia Commons
Leaf MinerWinding white or brown tunnels (mines) inside the leaf, or on beet, chard, spinach and celery large pale blotches that soon turn brown and papery.Photo: Flowersabc, CC BY-SA 2.0, Wikimedia Commons
Two-spotted spider miteFine silk webbing over leaves and shoot tips in heavy attacks.Also called: red spider mitePhoto: Gilles San Martin from Namur, Belgium, CC BY-SA 2.0, Wikimedia Commons
WhiteflySticky honeydew on leaves, stems and fruit, followed by black sooty mould.Photo: gaucho, CC BY-SA 3.0, Wikimedia Commons

Diseases

Which zinnia problems need quick action?

These spread or do lasting harm fast; check the plants and start treatment the day you see them.

Grey mould: Small black seed-like bodies may form on the infected material.

Plants with many of the same problems

Which plants each problem affects: sources

The links between these problems and the plant were checked against these pages.