Q.What is the milky white ooze on my grapevines?
Our grapevines are pretty old, and this is the first year we noticed what I thought was bird poop on the vines. I rinse it away and it comes back almost instantly. Is this from a bug and is it still safe to eat the grapes?
Certified GKH Gardening Expert
Sounds like spittle bug problem. Here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/pests/insects/spittlebug-control.htm