Peach pests and diseases: how to recognise them
Prunus persica
The pests, diseases and disorders recorded for peach 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 | 12 |
|---|---|
| Pests | 5 |
| Diseases | 5 |
| Growing conditions | 2 |
| Need quick action | 2 |
Pests
Plum mothA pinkish caterpillar up to 12 mm long with a brown head inside ripe fruit, with brown droppings near the stone.Also called: plum fruit moth, red plum maggotPhoto: Donald Hobern, CC BY 2.0, Wikimedia Commons
San José scaleGumming on the bark and dying twigs and branches.Photo: Zihao Wang, CC BY 4.0, Wikimedia Commons
Scale insectsSome species lay eggs under white, waxy, cotton-like fibres on stems or leaf undersides.Photo: BARAKAT2011, CC BY-SA 3.0, 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
Leaf rollersBronze scars with a rough, net-like surface on the fruit skin.Also called: tortrix moths, leafroller mothsPhoto: Patrick Clement, CC BY 2.0, Wikimedia Commons
Diseases
Brown rot and blossom wiltRotted fruit dries into shrivelled mummies that stay on the tree.Photo: Rasbak, CC BY-SA 3.0, Wikimedia Commons
Honey fungusBlack or brown root-like cords ("bootlaces") on the roots and in the soil, mostly in the top 15 cm.Photo: Stu's Images, CC BY-SA 3.0, Wikimedia Commons
Cytospora cankerLeaves above the canker droop and turn brown but stay attached, sometimes through winter.Photo: Curtis Swift, CC0, Wikimedia Commons
Peach leaf curlNew leaves in spring pucker, thicken and curl, turning red or purple.Photo: Giancarlo Dessì, CC BY-SA 3.0, Wikimedia Commons
Shot holeRough, corky, scabby brown spots with dark purple margins on the fruit.Photo: Tigerente, CC BY 4.0, Wikimedia Commons
Growing conditions
GummosisClear gum usually points to a non-living cause such as a wound, frost, sunburn, compacted or waterlogged soil, or planting too deep.Photo: Rosser1954 Roger Griffith, Public domain, Wikimedia Commons
Frost cracks and winter sunscaldLong vertical splits in the trunk, usually on the south or south-west side.Photo: Roger Griffith, Public domain, Wikimedia Commons
Which peach problems need quick action?
These spread or do lasting harm fast; check the plants and start treatment the day you see them.
- Brown rot and blossom wilt: Sunken cankers may form on twigs where the infection spreads from flowers or fruit.
- Honey fungus: Clumps of honey-coloured mushrooms around stumps or over dead roots in late summer and autumn — not every year, and plants may die before any appear.
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.
- rhs.org.uk/biodiversity/plum-moth
- caps.ceris.purdue.edu/wp-content/uploads/2025/07/Grapholita-funebrana-stone-fruit-manual-d
- ipm.ucanr.edu/agriculture/peach/san-jose-scale/
- extension.umd.edu/resource/scale-insects-indoor-plants
- ipm.ucanr.edu/PMG/PESTNOTES/pn7408.html
- rhs.org.uk/biodiversity/glasshouse-red-spider-mite
- ipm.ucanr.edu/PMG/PESTNOTES/pn7405.html
- ipm.ucanr.edu/PMG/PESTNOTES/pn7473.html
- rhs.org.uk/biodiversity/tortrix-moth-caterpillars
- rhs.org.uk/disease/brown-rot
- rhs.org.uk/disease/blossom-wilt
- rhs.org.uk/disease/honey-fungus
- rhs.org.uk/advice/pdfs/honey-fungus-host-list.pdf
- extension.psu.edu/cytospora-canker-of-stone-fruits-in-the-home-fruit-planting
- pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-cytospora-canker
- rhs.org.uk/disease/peach-leaf-curl
- es.wikipedia.org/wiki/Taphrina_deformans
- ipm.ucanr.edu/home-and-landscape/shot-hole-or-coryneum-blight/
- en.wikipedia.org/wiki/Shot_hole_disease
- henderson.ces.ncsu.edu/news/pest-alert-gummosis-in-cherries-peaches-and-plums/
- extension.illinois.edu/blogs/good-growing/2026-01-30-exploding-trees-closer-look-frost-cra
- extension.usu.edu/forestry/publications/utah-forest-facts/021-sunscald-injury-or-southwest