Wyvona I. Asked
I killed my grapevines with Sevin dust 10%. How can I revive them?
The Gardener’s Answer
Hello, Wyvona: As gardeners we see insects on our plants and instantly think we have to spray something. Well, this is not always the best solution, and depending on the situation it can do more damage than good. As for your grapevines, there is no reversing the damage that has already occurred but depending on the extent of the damage and the real reason for the damage, it may not be as bad as you think. I am guessing you had an insect problem before you applied the Sevin, so unless it was not used as directed it may not be the culprit. Following recommended application rates is important when using any product in the garden, especially broad-spectrum chemicals such as Sevin. This product is a synthetic insecticide with carbaryl being the active ingredient. It is harmful to beneficial insects such as honey bees. Without being able to see your vines, it is hard to say exactly what is going on. What are the symptoms? You can always take a sample to your county Extension agent or to a reliable garden center/nursery and they can give you a better idea of what is happening. It is likely that the roots are just fine and it will hopefully put on healthy new growth next spring. I would not go as far as removing them yet. Wait until next spring and see what happens. Sanitation is important in the fall so that insects and bacteria do not have a place to over-winter. Keep the area free of fallen plant debris and this will help prevent future problems.