All of my mowers have the mulching blades-and they can handle grass,leaves,pine cones with ease.--and the unusual-had an expired credit card-just wanted to see what the mower would do with the mulching blade-a Gater one-the card was reduced to powder.Same with an aluminum can flattened by being run over with a car-just wanted to see what it would do-the JD tractor-the can was reduced to aluminum flakes!I have Kevin rake the yard when there is a LARGE amount of pine cones-the mower struggles thru them.Pine straw is one of the toughest things to shred with a mower and mulching blade-takes several passes-sometimes the straw can wrap around the blade shafts in the JD.The hardest stuff to grind up.so--its easier to have Kevin rake the straw if there is a lot of it-Will be calling him soon to rake the junk Sandy blew down.