Everything. Water& soap does not kill a tree. In sun or shade.
Yea you are totally right. But I never wrote that it Will kill the tree.
Water and soap left on photosyntesis surface in the sun inhibits photosyntesis and gas excange. It Will not kill the plant unless it is not already very week. And in that case the soap and water spray is not the cause, just an accelerator.
So please read on a forum with the intention to understand your "counterpart". Acusing People to be lying does not really make a sound discussion.
Br
Magnus