I live in the South and put out container vegetables about 4 weeks ago. We have had a lot of rain lately. They look good except the leaves are being eaten a little at a time. I do not see any pests on them; however, I have a gardenia in the flower bed and when I rubbed against it, little white bugs (like fluff) flew off. . . . . . . .then settled right back and you can't see them. The leaves on this plant also have black looking mildew on them. The tree I thought has been stunted as it does bloom but it has not grown at all in 4 years. I hope this will help you with the little bugs. And I also have Sunflowers sprouting up and leaves are being eaten on them also with no sign of the little creatures.
My Leaves on My Vegetable Plants in Containers Getting Eaten
You may have a visiting rabbit and/or groundhog visiting at night. The insects are probably whiteflies or aphids. These articles might help: https://www.gardeningknowhow.com/plant-problems/pests/animals/camouflage-gardening-deterring-garden-crashers-pests.htm