Accel Deep Deck w/mulching kit is a Zero Discharge Mower
When I bought the John Deere X350 with 48" Accel Deep® Deck side-discharge mower with mulching kit, I assumed I was getting essentially a rear-discharge mower. What I got was a Zero-Discharge Mower. So far, even under worst case condition, I never see any brown clippings. They are chopped up so fine that they disappear into the turf before they turn brown. Before, when we had a picnic, I used to mow every 5 days for at least a month to get control of the clippings and make the lawn look good. Now, even after 3 weeks, I mow it once and it looks good enough for a picnic with out any brown clippings showing up.
More at: Now my Deere can see and be seen