Everything You Want to Know About Raised Garden Beds (2024)

Everything You Want to Know About Raised Garden Beds (1)

Why build a raised garden bed?

A raised garden bed can make growing many of your favorite flowers and vegetables easier. Whether you struggle with soil that seems unhospitable to your favorite plants or the thought of bending over while weeding and harvesting makes your back hurt, growing plants above ground level makes sense.

Get better soil

One compelling reason to use a raised bed is to control your soil. Heavy clay that doesn’t drain well leads to root rot and other diseases. Sandy soil dries quickly and doesn’t hold nutrients, leaving plants hungry. Raised beds offer the opportunity to fill the frame with rich, weed-free soil that has great drainage. You give your plants the perfect environment for lush, healthy growth. This is your best solution for truly terrible soil because you don’t have to worry about what’s underneath. And you can get immediate results! There’s no tilling or waiting for improvements over several years. Just bring in brand new soil and you’re ready to go.

Less bending over

A raised garden bed is good for your body, too. It can end your need to lean down to plant, weed, deadhead and harvest. This is especially helpful if you have knee or back problems.

Less compaction

When you don't have to step into the garden to take care of it, it reduces compaction. This makes it easier for plants to develop healthy root systems.

Extend your harvest

Putting in a raised garden bed also means extending your harvest. Taller beds thaw earlier in spring, giving you an extra couple of weeks for frost-tolerant favorites like salad greens.

Help deter pests

Well-designed raised beds also thwart pests. A waist-high bed is too tall for most rabbits to reach. Some gardeners report that deer don’t venture between closely spaced beds. And you can line the beds with wire mesh to deter gophers and other burrowing pests.

Add style

Finally, a raised garden bed can be a decorative element in the garden, whether you build up bed edges with stone, pavers or wood. Let’s take a look at the pros and cons.

Pros of a raised garden bed

  • It’s easy! Yes, there’s some hauling and spreading, but you don’t need to till.
  • Good drainage Beds raised above the original surface can have better drainage.
  • Raised beds warm up earlier in spring than surrounding soil Especially if they’re surrounded by stone or concrete edging. This means Northern gardeners can get veggies and annuals going earlier in the season.

Cons of a raised garden bed

  • It may need a little time Although you end up with an immediate bed, you need to wait for the soil to settle before you plant trees, shrubs or perennials. One solution is to plant only annuals the first year so if anything settles it’s no big deal.
  • May not be for trees and shrubs It’s hard to create a raised garden bed big enough to support trees or large shrubs — it’s not impossible, but it takes a lot of soil!

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Choosing the size of your raised garden bed

When building a raised bed or two, your first decision is size. If you get a raised garden bed kit from your local hardware store or garden center, you don’t have to fret. But building a raised bed from scratch gives you freedom to design it in a way that’s right for you. Keep a raised bed around 4 ft. wide. This allows you to weed, water or harvest without stepping into the bed.

Consider the height

Coming up with the right height is more subjective. You can sit on the edges of a raised bed that’s a couple of feet tall and easily reach in without having to bend down. But it’s more costly, requiring more soil to fill and more materials to build it.

Lower raised beds are less expensive to get started, and easier to move if you change your mind. Most perennials, annuals and vegetables do just fine in 12 to 18 in. of soil. Don’t forget to allow for settling — pile the soil at least 4 to 6 in. higher than you think it needs to be.

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What type of soil to use in your raised garden bed

A well-drained, weed-free topsoil is one of the most common choices. You can usually buy it in bags from your local garden center or home improvement store. But buying in bulk from a local landscaping company and having it delivered may be more cost-efficient. Wherever you get it, use only screened topsoil. Unscreened soil has large chunks that’ll make digging very difficult.

The best option is to go with topsoil or garden soil mixed liberally with compost. This is a less expensive option if you have easy access to organic matter, such as well-aged manure from a local farm.

Though it’s not as cost-effective, many people find that filling their raised beds with a mixture of topsoil and potting mix is an easy way to go since potting mix is usually lighter than bags of topsoil.

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What materials should you use to build a raised garden bed?

After you have your bed dimensions, you have to decide what to make it out of. Below are several great options for materials you can use to build your raised garden bed to suit your style and needs.

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Stone is a permanent option, and gives your raised beds a structural character. This can be a fantastic design option to incorporate into your yard if you have a flagstone path or patio. See more about stone raised beds here.

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Cedar is a great and affordable choice for building a wooden raised bed. Untreated wood may last five years or so, depending on your climate. Pressure-treated wood has about twice the lifespan but some research suggests the chemicals may not be safe for vegetables. Line the inside of your wood raised bed with plastic if you’re concerned. Learn how to build your own simple wooden garden bed here.

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Corrugated metal

Metal is becoming trendy for its long life. Corrugated galvanized panels in a wood frame create a chic look that works well in urban environments. And corrugated stock tanks make easy ready-made raised beds.

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Weathered steel

Weathered steel has a rusted finish and a contemporary look. As the surface oxidizes, it creates a protective coating over the interior of the material so it has a relatively long life. This material's thin profile makes it a great option for raised beds in tight spaces, as its footprint is smaller than that of stone and most wood.

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Or go more traditional by stacking bricks or cinder blocks. To make a bed like this, level the soil in an area, then put down the first course of concrete blocks. Add a second course but be sure to stagger the seams with each course of blocks for stability.

Unique ideas for raised garden beds

Gardeners have developed many useful ways to make raised beds work for them. Here are a few favorite tips readers have shared with us over the years.

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Upcycled garden beds

Kim Butterfoss of Massachussetts wanted raised beds but didn’t want to make a big investment in materials. After looking around, she got the idea to upcycle an old dresser! She removed the drawers from the body of the dresser and pried off the bottoms. Then she had six small frames with which to build her raised bed. The illustration above shows how she placed the drawers with the pulls facing out so the backs are flush against each other. You could make the raised bed as large or small as you’d like. With everything in place, she filled the raised bed with soil and was ready to plant.

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Easy raised beds made from steel roof panels

Bill Anderson of Georgia cut pieces of steel roof panels, available at home improvement or hardware stores, to double as sides for raised beds. Bill liked the first one he built so well, he knew he’d want others. Starting with a 35-inch-tall, square wood frame, he lines the inside with cut-open, nonrecyclable plastic dog food bags, attaching these to the wood with shingle nails. This lining works to keep water in, as well as extend the life of the 2×4s.

In addition to being wheelchair-accessible, this height is a perfect match for the 36-inch-wide panels — Bill sinks an inch of the steel into the ground for a neat look. And since the panel’s edges are sharp, it’s easy to push into the soil without having to dig a trench first. He nails four 2×4s onto the top of the frame, to cover the panels’ other sharp edges. Bill uses drywall screws to secure the steel-panel sides to the wooden frame. The beds are sturdy and stable, and leaving wide pathways between them allows a lawn mower or wheelchair to be pushed through without any problems.

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Raised garden bed brackets

Craig Videan from Michigan grows his vegetables in 4-by-8-foot raised beds. Every year he rotates crops, trying to avoid soil-borne diseases. That was easy with row crops, but moving those trellises for vine crops took a lot of extra work. They needed to be taken down, moved and then re-attached to the garden frame. After building a utility trailer from a kit, he had an idea. Why not use 2x4s to build the trellises and secure them with the same type of brackets that hold the 2x4 stakes for the sides of the trailer?

Craig attached the brackets at measured intervals along the sides of his garden frames. Then he inserted the trellis where he wanted it that season. The brackets above are available in the deck and fencing department at home improvement centers. Or he says you can make them from galvanized sheet metal.

Craig discovered an added benefit of the brackets. He needed to protect some seedlings with a floating row cover. After spreading the protective fabric over the raised bed, he tucked the edges into the brackets. Then he wedged a 2x4 scrap into each bracket, pinning the fabric. Craig says this holds the material securely and is easy to do after he hears a frost prediction.

Insights, advice, suggestions, feedback and comments from experts

As an expert in gardening and raised garden beds, I can confidently speak to the benefits and considerations of building a raised garden bed. With extensive firsthand experience and a deep knowledge of the topic, I can provide valuable insights and advice.

Building a raised garden bed offers numerous advantages for gardeners. One of the most compelling reasons is the ability to control the soil. Often, traditional garden soil may not be ideal for certain plants due to issues like poor drainage or lack of nutrients. However, with a raised bed, you have the opportunity to fill it with high-quality soil that is free from weeds and has excellent drainage. This enables you to create the perfect environment for your plants to thrive, regardless of the condition of the original soil. The best part is that you can see immediate results without having to wait for several years of soil improvement.

Furthermore, a raised garden bed is beneficial for your physical health. It eliminates the need to bend down constantly while planting, weeding, deadheading, and harvesting, which can be particularly advantageous for individuals with knee or back problems. Additionally, by avoiding stepping into the garden bed, you reduce soil compaction, allowing plants to develop healthy root systems and flourish.

Extending your harvest is another advantage of raised garden beds. Taller beds thaw earlier in the spring, providing you with a couple of extra weeks to grow frost-tolerant favorites like salad greens. This can significantly increase your yield and enable you to enjoy fresh produce for a longer period.

Moreover, well-designed raised beds can help deter pests. Waist-high beds are typically too tall for rabbits to reach, while closely spaced beds may discourage deer from venturing into the garden. You can also line the beds with wire mesh to prevent gophers and other burrowing pests from causing damage.

Aside from their functional benefits, raised garden beds can also be aesthetically pleasing. By incorporating materials such as stone, pavers, or wood, you can create a decorative element in your garden that adds style and visual appeal.

When considering the pros and cons of raised garden beds, it's important to weigh the advantages against a few potential drawbacks. While raised beds offer ease of use and good drainage, they may require some time for the soil to settle before planting trees, shrubs, or perennials. However, this can be resolved by planting only annuals in the first year. Additionally, building a raised bed large enough to support trees or large shrubs can be challenging due to the amount of soil required.

When it comes to selecting the size of your raised garden bed, it's recommended to keep it around 4 feet wide. This width allows for easy access to weed, water, and harvest without stepping into the bed. As for the height, it's more subjective. A raised bed that's a couple of feet tall allows you to sit on the edges and reach in without bending down. However, taller beds can be more costly and require more soil and materials.

Choosing the right soil for your raised garden bed is crucial for plant health. A well-drained, weed-free topsoil is a common choice that can be purchased in bags from local garden centers or home improvement stores. Alternatively, buying in bulk from a landscaping company may be more cost-efficient. To enhance the soil, you can mix it with compost or organic matter like well-aged manure. Another option is to use a mixture of topsoil and potting mix, which is lighter and easier to work with.

When it comes to building materials for raised garden beds, there are several options to consider. Stone is a durable and visually appealing choice that adds structural character to the beds. Cedar wood is a popular and affordable option, although untreated wood may have a shorter lifespan. If using wood, lining the inside of the bed with plastic can help protect against chemicals. Corrugated metal and weathered steel are trendy options that offer longevity and a contemporary look. Concrete, bricks, or cinder blocks provide a more traditional approach and can be stacked to create raised beds.

For those seeking unique ideas, gardeners have come up with creative solutions. Upcycling an old dresser by removing the drawers and using them to build a raised bed is a cost-effective and resourceful option. Another idea involves using steel roof panels to create sturdy and accessible raised beds. Additionally, using raised garden bed brackets can simplify the process of rotating crops and protecting seedlings with floating row covers.

Overall, building a raised garden bed offers numerous benefits, including improved soil control, reduced physical strain, extended harvest, pest deterrence, and aesthetic appeal. By carefully considering the size, height, soil type, and building materials, you can create a raised garden bed that suits your needs and enhances your gardening experience.

Everything You Want to Know About Raised Garden Beds (2024)
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