Question

What had been the frog's experience at the sumac tree?

Answer 1

everybody was rude at him and he gets beated every time.

Answer 2

the frog is loud and most unmusical. All the creatures of the bog tried all the tricks to drive him away, they did not want to hear his song at all. But the frog is too thick skinned and continues to sing his crass cacophony from the sumac tree.