Grape Leaf Rust Mite (Calepitrimerus vitis)

Grape leaf rust mites are microscopic (0.2mm long) cream to pink in colour, wormlike and possess two pairs of legs near the head. The most visible and easily recognisable symptoms of rust mite occur from January to March. The vine leaves start to darken and take on a bronzed appearance because of the damage caused by the mites feeding on the leaves. Rust mites overwinter on trunks/cordons then migrate to spurs/canes prior to budburst. They infest newly emerging shoots.

Look for: Bronzed leaves

 

 

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