Fall Clean Up for the Vegetable Garden

Much of my garden is looking pretty ragged and it’s time to deal with it. While I advocate leaving flowers and decorative grasses in place through the winter as food and protection for birds and for their interesting wintry appearance, vegetable beds are often best when cleaned up before the ground freezes. Fall clean up is an important chore in most gardens.

An unsightly garden

There are many reasons to clean up the vegetable garden in the fall: most of the chores associated with growing and harvesting are complete but the days are still warm enough to work outside; dead and dying vegetable plants rarely have the same positive visual appeal of flowers and grasses; vegetable plant material left in the garden to overwinter can often harbor harmful insects; weeds can be pulled before they spread in spring; organic material added to the soil can decompose through the winter and early spring; the garden beds will be ready for spring planting with minimal preparation.

Fall is a great time to work in the garden. Daytime temperatures can be warm enough to work comfortably without the heat stress of summer and the soil is warm enough to handle digging and amending. You’ve had the entire growing season to identify things you want to do and change in your garden and those thoughts are still fresh in your mind while all of your tools and supplies are still in place. Take advantage of that and get outside before the cold of winter keeps you cooped up in the house.

After the first frost kills your warm season plants and subsequent freezes finish off the others, the withered vegetation can become a blight in your landscape. Gone are the vibrant colors and verdant backgrounds. Solely from an aesthetic perspective, removing the plant carcasses makes an immediate positive impact.

Most of the dead plants should find their way to your compost pile; chopping or cutting them into smaller pieces will hasten decomposition. Tomatoes and potatoes are best carted off in the trash, especially if you had any problem with fungal or bacterial infections. If you compost tomato plants with a disease you will introduce that same problem to future plantings when you spread the compost.

Cleaned beds, bagged tomato plants

Dead plants left in place through the winter provide a haven for many insects, most of them harmful. They burrow into the plants, or just under the soil, and continue their life cycle that results in many more insects emerging in spring. Cleaning up your beds breaks the cycle and reduces your insect pest problems the next year.

Cool season plants will continue to grow in cold weather and don’t need to be removed right away. Leaving brassica plants like cabbage, kale, broccoli, Brussels sprouts, cauliflower, and radishes is a natural way to kill some insect pests. The vegetation attracts some harmful insects. After harsh winter temperatures finally kill them and the plants begin to decompose in early spring, they’ll actually release cyanide compounds that will kill those pests. You can pull them up and add them to the compost pile in spring.

If you don’t have a compost pile, the debris of fall creates a great start. Stack the dead plants in your designated area and you now have a compost pile. Add the leaves that are piling up on your lawn and kitchen scraps you used to throw away. You probably won’t have the perfect blend of material to allow decomposition during the cold temperatures of winter, but you’ll have a mass that will begin to turn into compost with the warmth and rain of spring.

With your beds cleaned up, it’s easy to see the perennial weeds that have been lurking under cover. Left unchecked those weeds will grow, set seed, and multiply before you return for spring planting. The soil is still workable so deal with those invaders now. Dig them up and throw them on your compost pile. The green of the weeds is a nice balance to the brown of the dead plants.

I add to my compost pile throughout the year and at the end of the growing season I usually have a batch of compost ready to use. With the beds cleaned up I add a layer of that compost to the surface. Along with the straw and grass I used as mulch, it is a great organic amendment to the soil. Aged manure works well too. This year I also added the bedding and droppings from my neighbor’s rabbits that have been aging in a pile all summer. Store-bought compost and soil amendments are a good alternative.

Compost added on top of straw mulch

With all of those organics in place I simply turn them into the soil with a spade. Through earthworm and microorganism activity the material will break down and decompose. The freeze-thaw cycle of winter will help incorporate it in the soil. It will be about six months until I plant again and in that time the soil will be improved greatly.

In a few hours my vegetable garden is ready for spring planting. Sure the task is completed months ahead of time, but when the air and soil temperatures are finally warm enough in early spring I want to get to planting. Cleaning up the withered plants in spring is an unnecessary delay.

Raised beds ready for spring planting... in fall

My vegetable garden is just about on autopilot right now. The garlic is planted and beginning to sprout under the straw mulch; it will be fine through the winter (see my blog, “How to Plant Garlic“). The beds I cleaned up have the organic material incorporated in the soil and are ready to support new growth next season. My green manure, the cover crops (see my blog “Try Green Manure“), are growing well and will be turned in to the soil in spring. I’m leaving the sunflowers in place to feed the birds.

There are many activities to keep me busy now and in the months ahead, but an entire garden, the vegetable garden, is put to bed for winter. It required effort, though it wasn’t hard. In a small way I can relax a little as I focus on other things. And it’s a nice feeling to look back on the season from first seed to last plant on the compost pile and think about all the enjoyment it provided.

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4 responses to this post.

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