I do both, actually I don't have a lawn but a country yard.
Most of the time I let my grass grow very tall, when I cut I collect the clippings for mulch for my garden or for fodder for my compost.
If you don't allow your grass to grow too tall and you cut on a regular basis it's best to leave the clippings, as long as they are not too thick and matting they will break down and provide valuable nutrients for your lawn.
posted 11 years ago
so how can i leave the clipping on the grass??? don't put the bag in lawn mower??? or change the blade??