Hi, I'm having some bad pest issues on my cascara tree, indian plum, red twig dogwood, and red alder plants. My serviceberry and ninebark also show some damage. I have found aphids and spider mites on a few plants and have doused these plants with neem oil and pesticidal soap. Any clue who could be chewing these big holes in the leaves. The only bug that I've found looks like a fly, with an orange body, and black on the head and rear tip of abdomen.
Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
First, please allow me to compliment you on your hands and nails; shows you are a true gardener!!
I had some mysterious leaf damage and went hunting with a flashlight to find a small green grasshopper was doing the damage. You could have earwigs, grasshoppers, caterpillars, beetles or weevils. Although I think if it were caterpillars you'd be able to see the culprits. I think if it were slugs/snails you'd see evidence of a slime trail.
Just keep checking day and night. You might try some insecticidal soap.
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"