Bacterial diseases / Fungal diseases / Oomycete diseases / Viral diseases

Common pests and diseases of carrots and parsnips

PestsCarrot motley dwarf (CMD) CCarrot red leaf virus (CtRLV) and carrot mottle virus (CMoV)

Ramularia leaf spot PRamularia pastinacae

Sclerotinia CSclerotinia sclerotiorum

Carrot fly C/PPsila rosae

Spider mite C/PTetranychus urticae

Bacterial soft rots Ce.g. Pectobacterium carotovora, Pseudomonas spp.

Parsnip canker PItersonilia spp.

Silver Y moth C/P Autographa gamma

Nematodes – Free-living C/PVarious species

Willow-carrot aphid C/PCavariella aegopodii

Alternaria leaf blight CAlternaria dauci

Carrot yellow leaf virus C/P(CYLV)

Phloeospora leaf spot PPhloeospora heraclei

Cutworm C/PTurnip moth Agrotis segetum

Cercospora leaf blight CCercospora carotae

Parsnip yellow C/P fleck virus (PYFV)

Phoma canker PPhoma complanata

Powdery mildew C/PErysiphe heraclei

Check out the Carrot & Parsnip Crop Walkers’ Guide for full descriptions of all the pests and diseases.

Bacterial soft rots, Powdery mildew, © Washington State University; Alternaria leaf blight, Cercospora leaf blight, Parsnip canker, Phloeospora leaf spot, Ramularia leaf spot, Parsnip yellow fleck virus (left), Carrot fly (left and right), Nematodes – Free-living, Silver Y moth, Tarnished plant bug & capsids, © ADAS; Phoma canker, Spider mite, © American Phytopathological Society; Sclerotinia © Scottish Agricultural College; Cavity spot (left), Parsnip yellow fleck virus (right), Cutworm, Willow-carrot aphid, © University of Warwick; Cavity spot (right), © Martin McPherson, STC; Carrot motley dwarf (CMD), © FERA; Carrot yellow leaf virus, © Whitney Cranshaw, Colorado State University, bugwood.org

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KeyC Mainly affects carrotsP Mainly affects parsnipsC/P Affects carrots and parsnips

Cavity spot C/PPythium spp.

Tarnished plant bug & capsidsLygus rugulipennis and Lygocoris pabulinus C/P