"Stephen Henning" wrote in message
news
"D. Staples" wrote:

Explain from science how mulching will aid in the control of gypsy moth,
yard man.

He didn't say that. He said that turf was bad for black walnut and
gypsy moth was just an annoyance. However, fall webworm is not gypsy
moth.
--
You must have missed the past few years of the yard boy recommending
mulching for every possible condition or conditions of trees.