There's usually no problem mulching leaves or other plant material. As long
as its mulched fine enough to breakdown quickly. Avoid mulching during wet
or damp conditions.

Most grasses are resilient to PH changes.

If its a problem for you, rake all the leave in one section of the yard.
Dump the leaves in another and mulch that entire area. See the results next
spring. Then get back with us on the humbug someone told you.

--
Jonny
"Chris Spencer" wrote in message
news:wEokf.1422$xg1.802@trnddc03...
Out of convenience, I've wanted to mulch leaves (mostly Maple) into my
lawn with a mulching mower. However, I've heard this might change the
soil pH and end up killing the grass. Is mulching safe or is raking the
way to go?

Chris