Can't recall where I read this, but my understanding is that a true mulching
mower needs its housing shaped a certain way to redirect the clippings back
through the blade. The blade alone doesn't make a mower into a mulching
machine. Is your mower designed for that purpose?

Very likely not. My lawn mower is for bagging that has an option to
install a mulching blade. I guess this means I cannot totally expect
my lawn mower to mulch effectively. Oh well...

Thanks anyway.

Jay Chan