I just got back from a quick check of my community plot. LOTS of flea beetles on the potatoes! I didn’t notice them yesterday. They have chewed lots of tiny holes in the potato leaves making them look like fine lace.
It seems the recommended organic control for flea beetles is to either use row cover before the pests emerge (too late for this) or companion plant with marigolds and beans. This I can do. It will look pretty!