Something ruining my beet leaves

Asked May 31, 2018, 9:42 AM EDT

I have noticed some burning on my beet leaves, there is also what looks like exit holes from the burn areas so i was wondering if i may have leaf miners. It isn't clearly trails where an insect has been, it is just a large section where the leaf has been eaten from the inside. Maybe some plant disease is getting in? There is a small patch of tiny white things often under this burn spot. I've been removing the affected leaves, but I do not see any grubs in there when holding up to the light. Do you have any helpful information about what I can do to combat this before it takes my whole beet patch? Do you think it may be something else? Thanks! Sara

Multnomah County Oregon integrated pest management fruits and vegetables

1 Response

Leaf miners are the most likely culprit. Here are some photos, you'll find more with an image search online: http://extension.oregonstate.edu/deschutes/spinach-leafminer
This page from the PNW Handbook by the Extension Service explains the life-cycle and offers some controls for homeowners. https://pnwhandbooks.org/insect/vegetable/vegetable-pests/hosts-pests/beet-table-leafminer