Erineum mite, a microscopic spider causes blisters on grapevine leaves

Erineum gall is a disease that is often encountered on trees, but the grape vine also falls victim and the distinctive gall growths appear on the leaves.

Often green and in some cases pulling towards red, this is a benign affliction that isn’t cause for alarm…

These are actually mites and ticks invisible to the naked eye, that lodge themselves on the underside of leaves.
They create these galls or blisters by stinging the plant.

On the underside, a velvety layer appears that is usually white or pink but can also turn to red brown.

Treating erineum mite

  • It isn’t really necessary to treat it because erineum mite disappears on its own and it won’t reduce the harvest in any manner.
  • Nonetheless, you can apply curative care with a sulfur-based spray, or organically with predators such as Typhlodromus.
    But these mite-killing predators are difficult to find in stores, mostly because the impact of erineum mite is insignificant.