Fungal
high
Armillaria root rot
A soilborne fungus that rots roots and crown, killing vines in a slowly widening patch.
Roots
5 problems can affect the roots of your grapevine. Filter by type, or open one to compare symptoms and treatments.
Fungal
high
Black foot & Petri disease
Soilborne trunk-disease fungi that rot the base and wood of young vines, causing them to fail in the first years.
Insect / pest
high
Grape phylloxera
A tiny root-feeding aphid-like insect that devastates own-rooted European grapes.
high
Grapevine fanleaf virus
A nematode-spread virus that deforms leaves into a fan shape and leaves the crop straggly.
Insect / pest
moderate
Root-knot nematode
Microscopic soil roundworms that gall the roots and stunt vines, especially on sandy soils.
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