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Why fall yard care could start with doing less – but not nothing
Fallen leaves shelter next spring’s pollinators and feed the soil. A horticulture specialist explains how to make room for both nature and a tidy yard.
Assistant Extension Professor of Horticulture and Ornamental Horticulture Specialist, University of Maine
Every autumn, homeowners and gardeners tend to engage in a familiar ritual. As trees shed their leaves, people drag out rakes, leaf blowers and lawn bags to strip their yards bare before winter arrives.
It is a tidy habit rooted in aesthetics, but ecologically, clearing away fallen leaves strips the very foundation of local ecosystems. Far from dead debris requiring disposal, this fallen foliage forms a dynamic layer and a biological interface that drives nutrient cycling and is essential for soil health and the environment, including biodiversity.
As a researcher of plant growth in yards and gardens, I would recommend leaving leaves on the ground. There, they can provide essential winter habitat for native pollinators – even in places that don’t have freezing temperatures. And they act as a nutrient-dense, natural mulch for the soil.
Here is the science behind why the first step of fall yard care could simply be doing less – along with practical ways to keep your yard looking neat while nourishing the ecosystem underneath.
A winter sanctuary for native pollinators
To understand why leaf litter matters, it helps to look closely at what happens beneath the surface as temperatures drop. While honeybees pass the winter in sheltered hives, the vast majority of North America’s native pollinators do not.
Up to 70% of native bee species, including many insects’ cocoons and larvae, nest in the ground. Fertilized queen bumblebees burrow just a few inches into the soil or hide under dense leaf mulch to survive the freezing months ahead, to lay eggs in the following spring.
Raking, bagging and blowing leaves away destroys this crucial winter nursery.
Many other insects depend on the shelter of fallen foliage:
Moths and butterflies: Species such as the luna moth (Actias luna) and the Isabella tiger moth, whose caterpillar form is the woolly bear, spin cocoons or roll themselves directly inside fallen leaves. Raking or shredding those leaves destroys the next generation.
Fireflies: Adult fireflies lay eggs in moist soil, and their larvae spend up to two years hunting for their food, soft-bodied invertebrates under damp leaf litter. Raking deprives them of moisture and habitat.
Predatory ground beetles: These beneficial predators spend the winter under leaves, emerging in spring to feed on common garden pests such as aphids, slugs and mites.
Nature’s engineered soil insulator and fertilizer
In addition to being a shelter, fallen leaves are an evolved biological mechanism for nutrient cycling. Trees actively pump vital elements, including calcium, magnesium, potassium and nitrogen from deep subsoils, into their foliage. When autumn comes and leaves drop, these stored nutrients are deposited back into the soil.
Leaving leaves in place triggers fundamental ecological benefits.
A thick blanket of intact leaves acts as a natural insulator for the ground. Air pockets trapped between overlapping leaves moderate the soil temperature and slow heat transfer, buffering against the freeze-thaw cycles that heave soil, fracture plant roots and expose beneficial soil microbes to lethal cold. The intact leaf blanket also conserves moisture and prevents soil from drying out over the winter.
As fungi, earthworms and micro-arthropods digest fallen leaves through late fall and spring, they break down organic matter into a rich material called humus. This slow-release organic fertilizer boosts soil structure, improves water retention in sandy soils, and prevents erosion and runoff in heavy rains.
Decaying leaves feed beneficial mycorrhizal fungi in the soil. Those fungi form symbiotic relationships with plant and tree roots, helping the roots collect water and nutrients from the soil to nourish the plants above. A natural layer of leaves also suppresses spring weed seeds organically without needing synthetic chemical herbicides. And the moist, insulated microclimate under leaf litter is also critical for terrestrial amphibians, including frogs and salamanders, to survive freezing temperatures.
How to ‘leave the leaves’
Adopting a softer approach to fall cleanup does not mean your yard has to look completely untamed or that you have to risk killing your lawn. Here is how to balance suburban expectations with sound ecological science:
Move, don’t remove: Move the leaves from lawns and sidewalks, rake them into garden beds, around ornamental plants or into vegetable plots, using manual rakes or electric leaf blowers. Aim for a layer 2 to 3 inches deep. Leaving leaves in grassy areas can help ticks hide there too, but if you move the leaves to garden beds or spots that are used less, the ticks will be less likely to nest in the grass. Establishing pollinator zones on the property can also help reduce tick populations.
Skip the leaf shredder: Mowing over leaves with a mulching mower is better than sending them to landfills, but high-velocity mower blades still kill overwintering insect eggs, chrysalises and larvae. Leave leaves intact wherever possible in plant beds.
Wait for spring to clean up: Do not cut back hollow-stemmed perennials or clear leaf beds during early, warm spring days. Wait until temperatures consistently stay above 50 degrees Fahrenheit (10 degrees Celsius) so overwintering bees and butterflies have time to safely emerge.
When you bag leaves for disposal and then buy commercial wood mulch or synthetic fertilizers in the spring, you are effectively paying a price for what your trees provided for free. By rethinking the cultural expectation of pristine autumn lawns, it’s possible to transform silent landscapes into vibrant habitat sanctuaries, simply by stepping back and allowing natural processes to take over.
This article originally appeared on The Conversation. You can read it here. -
Could you survive The Oregon Trail? An emergency medicine doctor offers tips on how to not die in the great outdoors
The old computer game’s hazards still hold lessons for modern hikers, even with smartphones, better medicine and sturdier equipment.
If you grew up in the United States in the 1980s or ’90s, chances are you remember The Oregon Trail. For many like me, it was our first computer game and our first introduction to wilderness survival. We hunted buffalo, forded rivers, broke wagon wheels and, of course, learned about dysentery years before Google even existed, all while hoping our group would make it to Oregon City alive.
Lately, the game has found a second life. Nostalgic social media posts, memes and updated versions of the game have introduced The Oregon Trail to a new generation while reminding millennials just how unforgiving that grainy computer screen journey could be.
As a physician who specializes in emergency and wilderness medicine, I started thinking about how much of what the game taught me about surviving in the wilderness still applies today. After all, modern hikers and campers have access to tools the pioneers could never have imagined.
Surprisingly, I’d argue that more lessons from The Oregon Trail hold up than you might think.
Clean water is crucial
The Oregon Trail game made dysentery famous for an entire generation. Fortunately, advances in sanitation, hand hygiene and antibiotics have made large outbreaks like those that wagon trains and military camps experienced much less common, at least in the United States.
That doesn’t mean gastrointestinal illnesses have disappeared. Traveler’s diarrhea and cholera are still an important cause of illness around the world. Untreated water, poor hand hygiene and contaminated food can still derail any trip.
Simple habits such as purifying drinking water, washing hands before meals and after using the bathroom, and practicing good camp hygiene remain some of the easiest ways to stay healthy outdoors.

Boiling is the most reliable way to purify your water. Veronika Lunina/iStock via Getty Images Water purification is important with wilderness travel in the United States and in many areas of the world. There are many easy and cost-effective ways to purify water, such as boiling, filtration and treating with chemical disinfectants. Each method has its benefits and downsides.
Boiling is often the most accessible method. While it can kill bacteria, viruses and parasites, it will not remove water contaminants such as heavy metals, including lead and arsenic, or industrial contamination such as pesticides. Consider boiling your water for at least one to three minutes, depending on your altitude, to purify it. Water filtration is an easy option for backpackers but is less effective at removing viruses.
If you’re unable to boil your water, another way to ensure water safety is to filter it, then use another method to disinfect it.
Respect all waterways
You may no longer have to ford the river with oxen, but rivers, lakes and other bodies of water present unique hazards that outdoor adventure enthusiasts can overlook.
Moving water can be more dangerous than people realize. Even the best swimmers can drown in rip currents.
Cross bodies of water only when absolutely necessary. Avoid any water crossings after recent rainfall, as the water level often rises and the current can be faster and stronger. Submerged objects – rocks, fallen trees and other debris – as well as changing weather, flash flooding and strong currents can make crossing more dangerous.
If possible, use a Coast Guard-approved life jacket when you’re crossing water or on a boat.
Be ready to go the distance
It’s not just a broken wagon axle that can send a trip sideways. One thing The Oregon Trail captured well is how distance changes everything. A sprained ankle in a city usually means an inconvenient trip home or to the doctor, but a sprained ankle 5 miles from the trailhead may mean that someone will need to carry you. The same is true for other common wilderness concerns, such as dehydration, heat illness, infections or even blisters.
Preparation is about packing a first aid kit and thinking ahead. Ask yourself what you would do if your hike took twice as long as expected or if you unexpectedly had to spend the night outside. Research your route and carry more food and water than you think you’ll need. Check the weather and be prepared for it to change, with extra clothing and options for rain.

It’s dangerous to go alone. FG Trade/E+ via Getty Images No one tackled the Oregon Trail alone because it meant you would not survive. There is a lesson here in solo travel and solo mountaineering.
Traveling alone means that a minor injury such as a sprained ankle could mean crawling to the trailhead to call for help or waiting until you are identified as missing. If you cannot find someone to travel with you, provide an itinerary and travel location to a trusted person. Make sure they know when you should be returning and plan to check in. If you do not return as expected, they can call for help.
Respect the wildlife
Large animals still pose a threat across the country. While there may be fewer bison than previously seen on the Oregon Trail, animals in nature deserve respect.
No selfie is worth being attacked by a brown bear. If you see a dangerous wild animal, avoid approaching and immediately leave the area.
Venomous snakes are present throughout much of the United States and continue to cause significant injury and death around the world. If someone is bitten, please don’t try to cut the wound or suck out the venom. Instead, keep the person calm, minimize unnecessary movement, and focus on getting them to professional medical care. Antivenom is available in many major hospitals in the United States.
Even smaller and more docile animals such as deer and squirrels should not be fed. It is dangerous for an animal to get used to receiving food from humans. Additionally, animals carry diseases, such as rabies and leptospirosis, that can be fatal to people.
Don’t attempt to get close to any animals, no matter how calm or asleep the animal appears to be.
Technology is a backup, not a plan
One of the biggest differences between today’s outdoor adventures and those of the Oregon Trail is the ability to communicate.
Cellphones, GPS apps and emergency beacons have made it possible to call for help from places that were once completely isolated. However, while those devices are incredibly valuable, they shouldn’t encourage you to take bigger risks, as help may be far away, slow to arrive, and injuries in the wilderness can be fatal.
Travelers can use a smartphone with GPS capacity to avoid getting lost, but downloading any needed maps for offline use can help prevent lack of service from derailing your trip.
Additionally, an unlocked smartphone that isn’t restricted to one carrier is a great way to store and communicate critical data, such as travel plans and copies of your medical history.

Having an offline map is critical when going somewhere remote. Grant Ordelheide/Aurora Photos/Cavan via Getty Images Every environment has its own hazards
The Oregon Trail travelers worried about river crossings, disease and harsh weather. Today’s hikers face different challenges depending on where they are.
Desert hikers may struggle with extreme heat and dehydration. Mountain travelers face rapidly changing weather, lightning and high altitude. And coastal explorers can face problems such as riptides, waves, cliffs and unexpected rocky surfaces.
Altitude illness is often unpredictable and can sneak up on you. Most people experience acute mountain sickness within 24 hours of ascent, developing symptoms such as headache, fatigue, nausea or problems with sleep. Any confusion, difficulty walking, shortness of breath or coughing up significant phlegm should prompt an immediate descent.
There are commonly used prescription medications to help prevent and treat altitude illness. The mountain will always be waiting for your next attempt.
Some lessons survive every software update
Part of what made The Oregon Trail game memorable is that every decision mattered. Success often depended less on luck than on planning ahead, and that lesson still applies.
When people ask me what one emergency medicine skill everyone should know before heading outdoors, my answer is usually preparation. Thoughtful planning prevents far more emergencies than any single piece of equipment.
For people who spend a lot of time outdoors, I also recommend taking a wilderness first aid course. These courses teach practical skills to provide medical care in a wilderness environment.
Nature is no less powerful or unforgiving than it was on the Oregon Trail, and treating it with respect is essential. Combining advances in modern medicine with thoughtful preparation helps stack the odds in your favor so that, just as every Oregon Trail player hoped, everyone in the party makes it to the end.
This article originally appeared on The Conversation. You can read it here.
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