How to make leaf mulch comes down to two basic steps that you can do in one afternoon. You rake up dry leaves and then shred them with a mower or other tool until they look like cornflakes.
I make a fresh batch every year and the whole job takes me less than two hours from rake to pile. My mower deck goes to the highest setting and I just drive over the leaves where they fall on the lawn.
The first time I tried this I was shocked at how fast the leaves shrank down. A huge pile that took an hour to rake got chopped into a small mound of dime-sized bits in about ten minutes flat.
Shredding works because it breaks the leaves into smaller bits that pack more surface area into the same space. This step speeds up rot by 3 to 4 times the rate of whole leaves. It also stops the wet matting that can choke off plant roots.
You have a few tools to pick from when you go to shred leaves for your beds. Each one has its own pros and cons based on your yard size and budget.
Mulching Mower
- Best all-around: A mulching mower is the top pick for most home yards and can handle up to 6 inches of leaves per pass per UConn Extension data.
- The method: Set the deck high and drive over piles of dry leaves on your lawn, then bag the chopped bits or leave them in place.
- Time saved: You can mulch a half-acre yard in under an hour with a good mulching mower in a single fall pass.
Dedicated Leaf Shredder
- Power option: A leaf shredder is a stand-alone machine that drops the leaves down a chute into spinning blades for fast cuts.
- Cost range: Plan to spend $150 to $400 for a decent home unit that can process large piles in short time.
- Best for: Folks with lots of trees and big leaf piles each fall who want the most uniform shred size for their beds.
DIY Trimmer Method
- Budget hack: DIY leaf mulch can be made with just a string trimmer and a 32-gallon (121 L) trash can for under $80 total.
- The trick: Fill the can half full of leaves, stick the trimmer in, and run it like a stick blender for 30 seconds at a time.
- Trade-off: Slower than a mower but works great for small batches and tight spots where a mower will not fit.
Pick a dry day with low wind for the best results since damp leaves clog up most tools and blow around less when chopped. Put on safety gear like goggles, gloves, and long sleeves to keep the dust and bits off your skin.
Aim for shred bits about the size of a dime to a nickel for the best balance of breakdown speed and bulk. Bigger chunks rot too slow while dust-fine bits can blow away in the first stiff breeze.
You can spread the fresh mulch right onto your beds or store it in mesh bags or a wire bin until you need it. The bags let air through so the leaves stay loose and do not mold while they wait for spring use in your yard.
Read the full article: Leaf Mulch: Complete Garden Guide
