Felt disease

Leaf disease (lat. Erineum vitis) caused by mites (leaf gall mites, pox mites) at the time of budburst. The adult pests overwinter under the bud scales. When the buds swell in spring, they become active by piercing the shoots and, after budbreak, also on the leaves and leaves . The plant reacts by forming galls, which are pockmarked elevations on the upper side of the leaf in the colours green, reddish, sulphur yellow and brown. In the case of minor infestation, usually only the lower leaves are affected. In case of heavy infestation, growth is stopped, the leaves wither and the shoots wither. If the infestation lasts several years, the vines may eventually die.

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Felt disease

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