Yep, frass and it's manufacturer in the photo below.
The chewing seems to go from nothing to swiss cheese leaves.
I usually plant different varieties of cabbage all in the spring, and pick as ready. My former growing partner blasted all the cabbage with sevin, and reapplied after every rain. It worked famously - we had so much cabbage all summer we got sick of it and just left it there until exhaustion from harvesting tomatoes was over.
I would happily use BT over sevin anytime. Do you have a cheapish resource for this in small quantity, GoDawhs?
- Lisa
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