Environmental Educators Say Fallen Leaves Help Yards, Climate

Fallen leaves do not have to end up in a plastic bag at the curb. Environmental educators say the leaves covering lawns and sidewalks this time of year can be put back into yards to build soil health and keep organic material out of landfills, according to a report from WTOV.

Why do environmental educators recommend leaving leaves in place?

The core argument from educators cited in the report is straightforward: leaves that fall from trees are a free, local source of organic matter, and removing them severs a natural cycle that otherwise feeds the soil those same trees depend on. Rather than treating autumn leaf drop as waste to be hauled away, the recommendation is to keep leaves on the property — whether mowed into the lawn, raked onto garden beds, or piled into a dedicated compost area.

How do leaves improve garden soil?

As leaves break down, they add organic matter back into the ground, a process that supports the microbes, fungi, and insects that keep soil structure loose and workable. A layer of whole or shredded leaves spread over beds also acts as mulch, which can suppress weeds and slow moisture loss from the soil underneath. Educators describe this as simply mimicking what happens on a forest floor, where leaf litter is never raked away and instead becomes the base layer for next year's growth.

What happens when leaves go to landfills instead?

The report frames bagging leaves for pickup as a missed opportunity rather than a neutral choice. Leaves bagged in plastic and sent to a landfill are removed from the nutrient cycle on the property where they fell, and the organic material is lost to the yard that produced it. Environmental educators quoted in the report frame keeping leaves on-site as the more useful option for homeowners, both for their own soil and for reducing the volume of yard waste collected and transported each fall.

What's the simplest way to use fallen leaves this fall?

According to the report, there is no single required method. Homeowners can run a mower over leaves to shred them into the lawn, rake them directly onto flower beds and around shrubs as mulch, or set aside a pile in a corner of the yard to decompose into leaf mold over the following seasons. Gardeners planning other fall projects — such as the bulb planting demonstrated by the Fannin County Master Gardeners' southern bulb program — often fold leaf mulch into the same beds being prepared for spring blooms.

Glossary

• Leaf mold: Partially decomposed leaves that have broken down over one or more seasons into a crumbly, soil-like material used as a soil conditioner.
• Mulch: Any material, including shredded leaves, spread over soil to retain moisture, moderate temperature, and limit weed growth.
• Sheet mulching: Layering organic materials, such as leaves, directly over soil or beds to suppress weeds and build organic matter over time without tilling.

The underlying message from the educators cited in the WTOV report is that fall cleanup and soil-building are not competing tasks — leaves raked off a lawn and moved a few feet to a garden bed can do both.

Artiglio is A coming-soon iPhone chief of staff for briefings and drafts. Not on the App Store yet.