Here is a picture of a bush in my yard. It is now late June and little quarter size green apples are all over it. Can you tell me what type of bush this is?
That's a flowering quince, a chaenomeles, sometimes also called Japanese quince. With just one picture (apparently not even from your plant?) and various hybrids on the market I couldn't say exactly which variety, but the little apples will turn yellow in fall and are edible.