Unhappy blueberry!

Asked August 5, 2020, 12:59 PM EDT

Hi OSU, my blueberry seems to be suffering from something. It's producing berries just fine, but leaves (old and new) and stems (on new growth only) are having a problem. It's possible this is two problems? Any ideas? This bush is a reliable producer (every year a bounty since we moved in six summers ago), but I want to make sure if it's having a problem that I deal with it so it doesn't spread to our other blueberry bushes or other plants.

Multnomah County Oregon

1 Response

Some of it looks like rust https://pnwhandbooks.org/plantdisease/host-disease/blueberry-vaccinium-corymbosum-rust but the drying margins look like sunburn or inadequate water. It doesn't look like typical blueberry shock but there is a virus https://pnwhandbooks.org/plantdisease/host-disease/blueberry-vaccinium-corymbosum-shock

For the rust, there are no chemical or biological controls for the homeowner, only cultural controls. You can use dormant spray as a general control.

For shock, there also is no cure, only getting the plants through the initial shock.

You are welcom to peruse the documented issues with Blueberries here https://pnwhandbooks.org/plantdisease/host-and-disease-descriptions?title=blueberry to see if you can find something that matches your symptoms.