Tips for Preparing Your Garden for Winter in Ohio
- Thomas Poole

- 17 minutes ago
- 6 min read
As the leaves turn and the air gets crisp here in Ohio, it's time to think about getting our gardens ready for the cold months ahead. We want to make sure our plants make it through winter and are ready to go next spring. This means a bit of work now, but it pays off. Let's get our perennial gardens winterized so they're happy and healthy.
Key Takeaways
We need to clean up our perennial beds by cutting back old growth. This helps prevent disease and makes things look tidier for winter.
Adding a layer of mulch is a good idea. It protects plant roots from freezing and thawing cycles.
We should consider dividing plants that have gotten too big. This is also a good time to protect any plants that might not handle the cold well on their own.
Preparing Your Perennial Garden Beds For Winter
As the last of the autumn leaves fall and the air gets that crisp bite, it's time we turn our attention to our perennial beds. Getting them ready for the cold Ohio winter isn't just about tidying up; it's about setting our plants up for success come spring. A little effort now can save us a lot of heartache later when we see our favorite flowers struggling to return.
Tidy Up And Cut Back
First things first, we need to clear out the spent growth. Many gardeners have different opinions on when exactly to cut back, but generally, once the foliage has died back and is no longer providing any visual interest or habitat for beneficial insects, it's a good time. We should aim to remove dead or diseased plant material to prevent issues from overwintering. This means cutting back stems to a few inches above the ground. For plants that tend to get powdery mildew or other fungal problems, like phlox or bee balm, it's especially important to remove all the old foliage. Don't just leave it lying around; bag it up and dispose of it. This helps break the disease cycle.
Remove dead flower heads and seed pods.
Cut back herbaceous perennials to about 2-4 inches from the soil line.
Clear out any fallen leaves or debris that could harbor pests or diseases.
Mulch For Protection
Once we've tidied up, it's time to add a protective layer of mulch. This is really important for our perennials, especially those that might be a bit borderline for our climate or are newly planted. Mulch acts like a blanket, helping to insulate the soil and prevent the freeze-thaw cycles that can heave plants right out of the ground. We want to wait until the ground has started to cool down and we've had a few frosts, but before the ground freezes solid. Applying mulch too early can actually keep the soil too warm, encouraging late growth that won't survive the cold.
A good layer of mulch, about 2 to 4 inches deep, will keep the soil temperature more stable. This prevents roots from being damaged by repeated freezing and thawing throughout the winter months. We should avoid piling mulch directly against the stems of plants, as this can encourage rot and provide a cozy home for rodents.
We can use a variety of materials for mulching. Shredded bark, straw, or even compost works well. Just make sure whatever we choose is free of weed seeds. For plants that need extra protection, like roses or more delicate varieties, we might consider using evergreen boughs or a thicker layer of straw. This extra insulation can make all the difference.
Essential Steps For Winterizing Perennial Gardens
Now that we've tidied up and mulched, we can move on to a couple more important tasks to get our perennial gardens truly ready for the cold Ohio winter. These steps help ensure our plants not only survive but thrive come spring.
Divide and Conquer Overgrown Perennials
Fall is a great time to tackle overgrown perennial clumps. Many plants, especially those that have been in the ground for three to five years, can become too crowded. This crowding reduces flowering and can make the plants weaker. Dividing them in the fall gives the roots a chance to establish themselves in their new spots before the ground freezes solid. It's a bit of work, but it rejuvenates your plants and gives you more to enjoy next year.
Here's a simple way we can approach this:
Digging Up: Use a sharp spade to dig around the clump, going a good distance from the main stems. Try to get as much of the root ball as possible. Gently lift the entire plant out of the ground.
Separating: You can often pull apart the root ball with your hands. For tougher clumps, a spade or even two garden forks can help you split the plant into smaller sections. Aim for sections that have healthy roots and a few buds or shoots.
Replanting: Prepare new spots in the garden by loosening the soil. Dig a hole large enough for the divided root ball and replant at the same depth the plant was originally growing. Water them in well.
We recommend dividing plants like hostas, daylilies, peonies, and irises in the fall.
Protect Tender Plants
Some of our favorite garden additions might not be as hardy as others, especially here in Ohio. These tender plants need a little extra help to make it through the winter. We want to give them the best chance of survival so we can see them again next year.
Mulching Heavily: For plants that are borderline hardy, a thick layer of mulch (straw, shredded leaves, or wood chips) applied after the ground has started to cool but before it freezes can offer good insulation. This helps prevent the freeze-thaw cycles that can heave plants out of the ground.
Moving Pots: Any perennials planted in containers that aren't fully winter-hardy should be moved. We can group them together in a sheltered spot, perhaps near the house or garage, and mulch around the pots. Some gardeners even bury the pots in the ground for extra protection.
Wrapping: For certain plants, like some roses or ornamental grasses, we might consider wrapping them. Burlap can be used to create a windbreak, or we can loosely tie up the stems of ornamental grasses to protect their crowns.
Taking these extra steps for our less hardy plants is like tucking them into a warm bed for the winter. It might seem like a lot of effort, but seeing them return in the spring makes it all worthwhile. We're giving them a fighting chance against the harsh weather.
Remember, the goal is to shield these plants from extreme temperature fluctuations and drying winds. A little attention now means a lot more beauty later.
Wrapping Up for Winter
So, we've gone through the steps to get our Ohio gardens ready for the cold months. It might seem like a lot, but taking these actions now really helps our plants survive the winter and come back strong in the spring. Think of it as tucking them in for a long nap. We've cleaned up, protected what we can, and put things away. Doing this work means we can relax a bit, knowing we've done our best for our green spaces. Come next year, we'll be happy we took the time.
Frequently Asked Questions
When is the best time to start getting our garden ready for winter in Ohio?
We typically begin our winter garden prep when the growing season starts winding down, usually in the late fall. It's a good idea to get things done before the really cold weather and snow hit, so aim for October or early November.
Do we really need to cut back all our plants before winter?
For many of our perennial plants, yes, we do cut them back. This helps keep things tidy and can prevent diseases from overwintering. However, some plants look nice with their seed heads left on for winter interest and to provide food for birds. We decide on a case-by-case basis.
What's the main reason we put mulch around our plants in the fall?
Mulching is super important for protecting our plants. It acts like a cozy blanket, keeping the soil temperature more steady. This means the ground won't freeze and thaw as much, which is great for the plant roots and stops them from getting pushed out of the ground by those temperature swings.

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