Last Updated on November 4, 2026

How to Improve Garden Soil Over Winter (6 Simple Steps)

To improve garden soil over winter: pull the spent plants and weeds, leave the soil undug, spread finished compost on top if you have it, cover the bed with about two inches of leaves, lay a few sticks across them so they stay put, and in spring add whatever broke down in your chicken run or leaf pile, with the 120-day manure rule in mind. Everything goes on top. Penn State Extension reports that in farm studies, long-term no-till fields typically have at least twice the earthworms of clean-tilled fields. Worms do most of the mixing in this routine.

This page is the written version of the video above. I have about eighteen raised beds, some of them over ten years old, and I have never dug a single one. When I built them, the ground here was a thin layer of topsoil over sand. Now the soil in those beds is dark, rich and full of earthworms. Here is what I do between the last harvest and spring, in order, plus the things I quit doing because they weren’t worth the money.

The 6 steps at a glance

Step 1: Pull the spent plants and the weeds

The first step is pulling out everything that’s done for the year. I pull out every spent plant at the end of the season, whatever the crop was. I have also written the case for cutting spent crops at the soil line and leaving the roots to rot in place: leave the roots in. In the video, and in my beds, I pull the whole plant out. Most of it goes into the compost pile, and some of it goes to the chickens. If a plant had blight or another disease, bag it instead of composting it. Pull the weeds while you’re at it, before they drop any more seed into the bed.

Old tomato vines are where diseases like early blight and leaf spot spend the winter. University of Vermont Extension says both of those leaf spot diseases, early blight and Septoria leaf spot, overwinter on dead, infected tomato refuse, and it recommends cleaning up the debris at the end of the season. Old squash vines are the same. University of Minnesota Extension says squash bugs live through the winter as adults under plant debris, and that cleaning up the vines in fall reduces their overwintering sites. Clear the beds now, and there’s less waiting to come back at your plants next summer.

Step 2: Leave the soil alone

Step two is the easiest one. Don’t dig the soil, and don’t till it. I’ve never dug these beds. Digging a bed just feels weird to me now. I follow growers like Charles Dowding and Eliot Coleman, and a lot of how I do this comes from them.

Under the surface, good soil has a structure. There are worm tunnels, old root channels, and fine fungal threads holding the crumbs together. Ohio State University Extension describes the larger soil crumbs as held together mainly by fungal hyphae, root fibers and sticky compounds from roots and fungi. When you dig or till, you break all of that apart, and Penn State’s earthworm fact sheet says earthworms are less numerous in clean-tilled fields than in no-till fields. The USDA Natural Resources Conservation Service puts it in one sentence: “Every time soil is disturbed, its vital functions are compromised.”

Leave it alone, and the worms do the mixing for you. Everything you add goes on top, and it works its way down on its own. If the top gets crusty or packed down, more organic matter on top fixes that over time. You don’t need a shovel for it.

Step 3: Compost on top, if you have it

I make my compost in two pallet bins at the edge of the woods, and I get about two wheelbarrows a year, which is never enough. Every other year I order a load of organic compost to cover the rest. I search for “organic compost near me”, call a couple of places, and ask if they deliver. If your own pile went cold this fall, here’s why compost stops working in fall and how to get it going again.

Spread whatever you have in an even layer on top. You don’t need to work it in. Finished compost is dark and crumbly, and it smells like the woods. If you can still pick out leaves and stems, give it more time. Raised beds also sink a little every year as everything in them breaks down, so the compost keeps them topped up too. When I have enough, it’s two inches on every emptied bed.

Fall or spring?

You may have seen videos saying not to put compost on in the fall, because winter rain washes the good stuff out before your plants can use it. I’ve done it both ways, and I haven’t noticed a difference. Some years mine goes on in the fall. Other years I don’t get to it, and it goes on in the spring.

Here is why that makes sense. UMass Extension says usually over 90 percent of the nitrogen in finished compost is tied up in organic compounds, only 10 to 30 percent of that becomes available in the first season, and more is released in later years. So there isn’t a lot of loose nitrogen sitting there to wash away. Potassium is different. UMass says much of it can leach out of compost because it’s water soluble, which is one more reason to cover the compost with leaves.

What I have noticed is what happens when a bed goes a couple of years without compost. Those beds just fizzle out. I brought them back with some pelleted chicken manure, and then compost, and they came around.

Step 4: Cover the beds with leaves

I mix whole leaves and shredded ones and put down about two inches. University of Maine Cooperative Extension suggests shredding leaves with a mower before they go on the garden, because shredded leaves break down faster, blow away less and don’t mat down the way whole leaves can. Whole ones are fine too. They just need more holding down. My leaf post goes deeper, 6 to 8 inches of shredded leaves on finished beds; two inches is what the video shows and what went on these beds. I’ve got oak and maple here, so there’s never a shortage in the fall. No trees? Your neighbors are setting bags of them out on the curb in fall. I use every leaf I can get, and here are the seven ways I use them.

Bare soil takes a beating over the winter. Iowa State University Extension explains that raindrop impact breaks soil crumbs apart and crusts the surface, especially on soil with little cover. A layer of leaves takes the hit instead. In the fall and again in early spring, when Penn State says earthworms are most active (given the right moisture and temperature), nightcrawlers pull bits of those leaves to the mouths of their burrows, so the bottom of that layer works its way into the soil.

If you put compost on in step three, the leaves go right on top of it. If all you put down is compost, you can leave it uncovered. I’ve done that and never had a problem.

Straw instead of leaves

If you’d rather not deal with leaves, straw is the quickest, easiest cover there is. You just have to be willing to buy it. Make sure it’s straw. Hay looks about the same, but as the Piedmont Master Gardeners put it, most hayfields are full of weeds, and those seeds end up in your beds.

Step 5: Sticks to hold the leaves down

One problem with leaves is that they blow around. Any fallen branches will work. Lay a few across the bed, and the leaves stay where you put them. In the spring, pull the sticks off before you plant. That’s the whole step.

Step 6: In spring, the chicken-run pile and a little wood ash

All year long, my leaves and plant scraps go into the chicken run. The chickens scratch through it and add their manure, and all winter it sits there frozen. In spring I shovel it out and spread it on the beds the same way I’d use compost. No chickens? A pile of leaves and kitchen scraps does the same job. Let it sit all winter, and spread whatever has broken down in the spring.

That’s still raw manure, though. University of Wisconsin Extension explains the USDA organic rule: raw manure must be applied at least 120 days before harvesting any crop whose edible parts might touch the soil, and one of its three safest options is to spread it in fall, before crops are planted the next spring. Fresh chicken manure is also strong enough to burn young plants. Colorado master gardeners answering an Ask Extension question say raw chicken manure can burn and even kill vegetable plants because of its high ammonia. So fall, on empty beds, is the easy time to spread it raw. In spring, only put it on beds where nothing you eat will be harvested within 120 days, about four months, or on beds you’ll plant with fall crops.

I also scatter a little ash from the woodstove now and then. Just a little. University of Vermont Extension says wood ash, like limestone, is high in calcium and raises soil pH, and its rate is 15 to 20 pounds, about one five-gallon bucket, per 1,000 square feet, applied after a soil test. UNH Extension adds that too much can push the pH higher than optimal, and that blueberries and scab-prone potato varieties want acid soil and should not get ash unless a soil test says to. My older post on using wood ash in the garden gives a higher limit; the extension numbers here are the ones to use.

Then you plant right into the bed. Whatever’s left of the leaves can stay on as mulch. If you’re sowing small seeds like carrots, rake the leaves back first so the seed lands on bare soil.

What I stopped doing

Cover crops

I tried a cover crop once, winter rye and hairy vetch, on one bed. The hard part was killing it in the spring. Winter rye is tough. SARE calls cereal rye the hardiest of the cereals and says to wait until it has begun flowering before mow-killing it, or it can grow back. If you want to try one anyway, SARE says to plant hairy vetch 30 to 45 days before your killing frost, so count back from your first killing frost. On a big plot, you can let a bed sit out for a season. In a small raised bed, it was more work than it was worth. My older posts mention sowing a cover crop on beds that empty early; what’s above is where I landed after trying it. If you still want to try, cover crops for raised beds has seed amounts and how to end each one.

Soil tests

I did a soil test when I first built the beds. The advice on how to fix the results was all over the place, so I never tested again. I just kept adding compost and leaves. If your plants are struggling and you can’t figure out why, a test is still worth doing. University of Minnesota Extension suggests testing every three to five years, in spring before planting or in fall after the garden is harvested.

Fancy soil recipes

Mel’s Mix from Square Foot Gardening is one third peat moss (or coco coir), one third coarse vermiculite, and one third blended compost, ideally from five or more sources, according to the Square Foot Gardening Foundation. It works, but buying all of that from a box store to fill a bunch of beds gets expensive fast. My beds have rotted wood and sticks from the woods on the bottom, with a bought compost and topsoil blend on top. I wouldn’t change a thing.

Bags and bottles

Same goes for most of the bags and bottles at the garden center. I bought my share of them, and I’d skip them now. Fertilizer feeds the plant. Compost and leaves feed the worms and everything else living in the soil. Penn State Extension lists feeding bacteria, fungi and worms among the benefits of compost, along with improving the water-holding capacity of sandy soil. Feed the soil, and it keeps feeding your plants year after year.

What the bed looks like in spring

So what does all this look like over a whole winter? The plants come out in the fall, compost and leaves go on, and then the bed freezes and sits until spring. Here in New Hampshire, my beds freeze over the winter and don’t thaw until spring. When I pull back the leaves, the soil underneath is dark, crumbly and moist. There are worms all through it, and it’s ready to plant. Sandy soil like mine holds water a lot better once there’s organic matter in it, so the beds don’t dry out as fast in July. A bed that started out as sand can grow like this. It just takes organic matter on top, year after year.

If a neighbor asked me what to do before winter, I’d tell them to clean out the spent plants and add compost. Pull the plants, leave the soil alone, and keep it covered, and your beds get a little better every winter.

Then decide what goes where

Once the beds are ready, the next question is what goes where, and when to plant it. That’s why I built Plan My Garden. It’s free to start: enter your zip code and it finds your frost dates, draw your beds, pick your crops, and it places each plant at square-foot spacing and builds a planting schedule from those frost dates.

Quick questions

Should I put compost on garden beds in fall or spring?

Either. I’ve done both and haven’t seen a difference. UMass Extension says usually over 90 percent of the nitrogen in finished compost is tied up in organic compounds that break down slowly, so there is little loose nitrogen to wash away over winter. Potassium can leach out, so cover fall compost with leaves.

Should I dig compost into raised beds?

No. Spread it on top and leave it. Digging or tilling breaks up the fungal threads and worm burrows that hold the soil together, and Penn State Extension reports that in farm studies, long-term no-till fields typically have at least twice the earthworms of clean-tilled fields.

How deep should leaves be on garden beds over winter?

About two inches is what I use, of mixed whole and shredded leaves, held down with a few sticks. Shredded leaves mat less and break down faster. In spring, rake them back where you sow small seeds and leave the rest as mulch.

Can I put chicken manure on the garden in fall?

Yes, on empty beds. Fall is one of the safest times for raw manure. The USDA organic rule is at least 120 days between applying raw manure and harvesting anything that touches the soil, and fresh chicken manure is strong enough to burn young plants.

Related

• What to do with fall leaves: 7 ways I use every one
• Why your compost stops working in fall (and how to fix it)
• Empty raised beds in fall: two inches of compost and walk away
• Leave the roots in: cutting spent crops at the soil line
• Cover crops for raised beds
• How to use wood ash in the garden
• Prepare your garden for winter in 11 easy steps
• Spring garden prep: reset your raised beds fast