damage to pole beans

Asked September 12, 2016, 3:14 PM EDT

I've had a good crop of Kwintux beans but recently some of them have 'brown stains', not chewed but scrapped. I wish I could send you a photo. Could it be bean beetles? I see a few of them on both beans and cucumbers but I just thought they spread wilt which I haven't had this year. My cucumbers were prolific.

Montgomery County Maryland

1 Response

We spoke with our vegetable specialist and he said that there are lots of insects that will gouge pods, leaving brown stains. The insects rasp with their mouthparts to make the damage. Some of the possible culprits include grasshoppers and locusts, blister beetles, bean leaf beetles, etc.
The damage is only cosmetic, and they are edible, just maybe not company-ready.