Insects feed on buds, leaves, and fruit. The most damaging are those that feed on fruit because resulting rot can spread throughout the entire cluster. Use insect specific insecticides to eradicate insects you have identified as damaging to your vines. read more
Larvae emerge in three generations, beginning in late May and continuing through September. These pests damage grapevines by forming webs over and feeding on flower clusters, unripe grapes and grape bunches, emptying the grapes and leaving skin and seeds. read more
Spraying Grape Vines. Spraying is important to the survival of your plants. To handle potential diseases and pests, reference the guidelines below to know what you should spray, and when you should use it. NOTE: This is part 9 in a series of 11 articles. For a complete background on how to grow grape vines, we recommend starting from the beginning. read more
These pests damage grapevines by forming webs over and feeding on flower clusters, unripe grapes and grape bunches, emptying the grapes and leaving skin and seeds. Control often is targeted at the second generation to avoid re-infestation from untreated vineyards. read more