Beautiful as they are, cleaning up autumn leaves is a lot of work whether you have two trees or 20. That said, composting your leaves is easier than bagging them, if you have the space for it.
Leaf mulch and grass clippings are nutritional organic materials that can be recycled to benefit your plants, combat soil erosion, correct clay soil or adjust the pH caused by pine needles. Composting has been our solution for over a decade, and it simplified our lives while benefiting our landscape.
Benefits of Leaf Mulch
A layer of leaf mulch is an abundant source of nutrients, and you’d be giving your garden a valuable boost in several ways.
- The compounds released as carbon-rich leaves break down decrease excess nitrogen from other lawn fertilizers.
- The microorganisms that use the organic content as a convenient source of food will increase other soil nutrients that are lacking.
- The organic layer also acts as a moisture-retaining blanket, preventing the garden soil from drying out too quickly, which means less watering is needed.
- A layer of leaf mulch suppresses common lawn weeds by blocking sunlight, making it harder for them to grow amongst your perennials and saves you labor for spring planting.
- During the colder months, leaf mulch serves as insulation, protecting plant roots from harsh temperature swings and keeping your garden cozy through the winter.
Should I keep leaves on my lawn all winter?
While leaf mulch can do wonders for your flower and garden beds, it's a different story to leave the leaves on your lawn.
If you're tempted to leave them all winter, resist the urge! Here’s why:
- Smothering Effect: A thick blanket of dead leaves blocks sunlight and trap moisture. It turns your lawn into a soggy, moldy mess underneath. This suffocates your grass, leaving you with brown patches come spring.
- Increased Disease Risk: Piled-up leaves can foster leaf mold and fungal lawn diseases that thrive in the damp, dark conditions.
- Attracting Pests: Pests love to nestle in undisturbed organic matter, a healthy balance yields a strong ecosystem, but too many unchecked pests can be a headache when spring rolls around.
If I move the leaves, will I disturb the pollinators?
There are pros and cons. We know a lot of people who keep the leaves on their lawn all winter under this guise. I wholeheartedly perceive that relocating the leaves off the grass and into piles or distributed as mulch in landscaping beds can be more helpful for local pollinators. After all, pollinators, such as bees and butterflies, don't usually live in the fallen leaves on your lawn. Most pollinators seek more specific habitats, like underground burrows, on host plants, or in cavities such as hollow stems.
The definition of good pollinator/bad pest is also double-edged sword. "Letting your yard harbor insects in the winter can help promote native insect populations for the next year," advocated Emma Grace Crumbley, an Entomologist at Mosquito Squad Plus. At the same time, she explains, you could be breeding more mosquitoes, flies, midges, and agricultural pests like hornworms, aphids, and grubs by leaving moist substrates, leaf litter, and decaying organic matter.
Done well, I think it's safe to say that you can still promote pollinators while clearing leaves from your grass. And moreover, remember that the pollinators you do have will be happiest if you establish a perennial garden bed, so make a plan to support them in the springtime, too.
Best Practices for Collecting Leaves for Mulch
Turning your fall leaves into mulch takes a little planning, but it’s well worth the effort.
- Collect Dry Leaves: Use a leaf blower or a rake to create a pile of leaves while they are fresh on the ground. Wet leaves are harder to work with but you also want to expose the soil surface to as much sunlight as possible before the dark winter weather arrives.
- Shred the Leaves: Whole leaves can mat down and take longer to decompose. Run a lawn mower or leaf shredder over them to break them into smaller, easier-to-break-down pieces.
- Avoid Diseased Leaves: Leaves from trees with signs of disease (like spots or discoloration) can spread those problems to your garden. Skip using those in your mulch pile.
- Layer it Right: Aim for a 2-3 inch layer of shredded leaves. Too thin, and you won't get the full benefits of leaf litter. Too thick, and it could smother the soil, much like it would on your lawn.
Where can I use leaves once they're composted?
Once your leaf mulch has broken down, it’s a goldmine for various parts of your garden.
- Garden Beds: Use these coarse materials to insulate perennials, suppress weeds, and nourish the soil for healthier plants.
- Pathways: Transfer the composted mulch into your garden pathways to create a soft, natural surface that's easy to walk on and keeps weeds in check without commercial products.
- Around Trees and Shrubs: Pile leaf mulch around the base of trees and shrubs to help retain moisture and regulate soil temperature.
- Compost Pile: If you have more leaves than you need for mulch, toss the extras into your compost bin. They’ll break down even further and the finished product will provide valuable nutrients for next season’s planting.
We loved our Cyclone Rake, but is it worth it for you?
Lawn maintenance starts with learning what tools are best for your yard.
If you're dealing with more than an acre or so of leaf cover, a leaf vacuum like a Cyclone Rake can save you hours of raking and hauling. For mulching purposes, the real advantage is that many tools like this simultaneously shred material as it passes through the impeller, so the leaves you collect are already partly broken down and ready to spread or add to a pile. We would always empty the hopper directly into our compost area or onto garden beds as a fresh layer of fall mulch.
A few things we've learned over the years:
- Work when leaves are dry. Damp leaves clump, clog the intake, and are heavier to haul.
- Make multiple passes. Two lighter passes usually beat one slow, heavy pass on a thick leaf layer. Plus, if you overload the trailer with leaves, it can start to make your mower tip backwards and affect steering :) Funny, but not safe.
- Check your terrain. Steep slopes, soft ground, and very uneven areas can make towing tricky or unsafe. We also always use wheel chocks if emptying the hopper on any kind of incline.
