Which pests and diseases affect zinnias?
Our Advice
Zinnias can be affected by a variety of pests and diseases. Common insect pests include aphids, spider mites, and whiteflies, while diseases such as powdery mildew and bacterial wilt can also occur. To prevent pests and diseases, it's important to keep the plants healthy by providing proper nutrition and avoiding over-watering. Regularly inspect the plants for signs of pest or disease damage and treat promptly with insecticides or fungicides as needed. Avoid overhead watering and try to keep the leaves as dry as possible to prevent fungal infections.
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Learn More About Pests & Diseases
Angle shades moth
Anthracnose
Box blight
Box tree caterpillar
Canker — Bacterial
Canker — Bleeding
Canker — Fungal
Capsids
Centipedes
Chafer grubs
Coral spot
Cutworms
Earthworms
Earwigs
Eelworms (leaf & stem)
Eelworms (soil-borne)
Froghopper
Fuchsia gall mite
Garden Ants
Grey mould
Honey fungus
Leaf cutter bees
Leaf Rolling Caterpillars
Leaf spots — Fungal
Leatherjacket
Lily beetle
Mealy bugs
Mildew — Downy
Mildew — Powdery
Millipedes
Pear midge
Phytophthora root rot
Rose Black spot
Rusts
Sawfly — Berberis
Sawfly — Gooseberry
Scale insects
Sciarid flies
Slugs
Snails
Sooty moulds
Thrips
Vine weevil
Whitefly
Wireworms
Woodlice
Woolly aphid