When the shredder shreds it reduces volume by ten. Meaning ten bags of raked leaves will be reduced down to one bag.
Good luck controlling those little bits if there's even a breeze. And you're not likely to find the number of leaves right there in your garden to shred into the bagger and place around the area you've just shredded. And, using only the volume of leaves you've found right there, shredding them, and putting that volume on the ground probably won't stack up to the suggested level of 6 inches of mulch necessary to retard or prevent the germination and growth of most sun seeking garden nuisances.
I collect bags from the neighbors, take them to the place I garden, shred them there, and mix them 1:1 with grass clippings, wet it all down and VIOLA!!! usually in six weeks, compost! Now we're talking about something good for your garden.
Also, oak leaves, for example are very good for around azaleas IIRC but most definitely other acid lovers like rhododendrons love the acidic oak leaves. BUT many garden veggies will be hindered by the acidity in the affected soil when the leaves break down. So you'd do well to do some research about which kinds of leaves to put where. I know this is splitting hairs but little things make big differences in gardening. Try putting your seeds in the compost you've made with a teensy weensy little bit of mycorrhiza
and see the difference in speed of germination, overall vigor throughout the life of the plant.
But back to the topic of using bulk leaves as mulch..... this is exactly the right time of year here in the Great Lakes Ice Box to gather bags of leaves. Wet the leaves right in the (compostable) bags and store them 'til next spring. They'll start to decompose a bit and get sticky to each other. This will allow you to place them right where you want them and expect them to stay there. Also the fungal headstart on the leaves will be a hostile environment for nuisance seeds trying to germinate and start growing upward through the leaf mulch.
There's lots of good ways to leverage those leaves.
Edited by pharmer, 08 November 2015 - 08:56 AM.