I have gotten leaves from my neighbor, who collects them in a bagger on his mower. this is my concern: the leaves are a mixture of shredded leaves and mostly whole leaves--about half and half. I have always read that you shouldn't put whole leaves on as a mulch because they mat down when wet and keep water from getting to the soil, and they smother plant roots. Do you think this would still be a problem if it's a half and half mixture? Thank you for your help!!