How to Build a Raised Garden Bed (2024)

How to Build a Raised Garden Bed (1)

Raised garden beds add a rich aesthetic to your garden while providing ease and convenience to your gardening. If you think raised beds aren’t your style, think again. With the growing trendiness of homegrown food, home gardeners have gotten creative with raised bed designs and styles. Raised beds aren’t only for vegetables, however; they also make beautiful flower beds.

From simple ground-level boxes to intricate waist-high garden boxes, there is a raised bed style for everyone. Many of the designs and aesthetics also bring an added charm to the look of your garden. The best part is, raised garden beds are easy to order online and even easier to build yourself. Read on to learn how to build one so you can add this highly practical and popular element to your yard, too.

Why a Raised Bed?

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There are many reasons why gardeners choose to use raised garden beds. Aside from their good looks and convenience, here are some of our favorites:

  • Tending to raised garden beds is much easier on your back and knees.Say goodbye to bending and squatting and hello to easy pickings. Taller raised garden beds and garden boxes allow for waist-high gardening.
  • Soil control.Raised beds allow you to control exactly what soil you’re growing your beloved veggies, fruits, and flowers in. Fill your raised bed with the perfect combination of topsoil and compost for the perfect growing environment.
  • Weed control.It’s hard for weeds to creep in when your garden is a foot off the ground.
  • Pest control.Raised beds are great deterrents for all kinds of critters and furry annoyances that like to wander into your garden beds for a midnight snack. For very determined pests, add some mesh.
  • Space-saving.Raised beds are a great alternative for those who have less yard space for an in-ground garden or cannot dig down deep enough due to landscape or soil limitations.
  • Healthy veggies.Sometimes the fruits of our labor can get lost in leaves, grass, mulch, and dirt. Planting your vegetables higher off the ground will prevent rotting and loss of crop.

Now that we’ve convinced you that raised garden beds are for you, let’s see how to build them.

Choosing Your Materials

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Raised garden beds are typically made of wood, though we’ve seen them also made from upcycled metal sheets and concrete blocks. Despite the wide range of creative options for raised bed materials, we’re going to talk about wooden raised beds. There is a lot of debate in the raised bed world about what material is best to use. Woods like cedar, oak, and redwood are more expensive, but they’re also rot-resistant and more durable than other types of wood. Although pressure-treated lumber is also rot-resistant, it’s not often preferred by organic gardeners, as it can leech chemicals into the soil. Pine and other woods will work, but you should expect to replace them every few years.

Many home shopping centers and online stores will have do-it-yourself raised bed kits for purchase. Alternatively, head to the local lumber yard to do it from scratch. Another option is to upcycle fallen trees or logs. No need to dig or saw — simply line the bed with the logs and fill with dirt. The rotting logs will also seep nutrients into the soil to feed your plants.

You may need some hardware to keep your raised beds together. Sometimes the types of metal screws, bolts, and joints you use will depend on the type of wood you’re working with. Be sure to choose hardware that is designed for use outdoors. Some DIY raised bed kits don’t require hardware and can simply be puzzle-pieced together. Instead of screws, you can also use rebar or another inexpensive metal reinforcement to support the sides of the raised bed.

Getting Started

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To get started, choose the perfect spot in your yard. Unless you are growing a shade garden, make sure that this spot receives at least six to eight hours of direct sunlight per day. Next, determine how much space you’ll need. This has everything to do with what you plan to grow. It always helps to draw out a garden design to get a better idea of the space requirements. Then, do some rough calculations to determine how much lumber you will need.

Now it’s time to source your materials! For a basic 4’ x 8’ raised bed, you will need two pieces of lumber that are 4’ long and 10” to 14” wide. For the length, you will need two pieces of lumber that are 8’ long and 10” to 14” wide. You can use 1’ strips of rebar hammered into the ground to hold the pieces in place or use some outdoor quality screws and brackets to hold the bed together. Fill with top-notch soil and voila! Your simple homemade raised bed is complete. For higher raised beds or more intricate designs, be sure to look up the many designs available for free on the internet to inspire your DIY raised bed project.

Get Planting

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Because raised beds warm up sooner in the spring and stay warm for longer in the fall, midsummer is still a great time to plant! Fill your new garden bed with soil and plant some fall-friendly seeds, such as lettuce or carrots. You can also plant fall-friendly crops such as broccoli and kale from transplants to get a bountiful harvest before the first snow. Raised bed gardening is all the rage, so jump on board, build your raised beds, and enjoy the convenience and aesthetic of raised bed gardening for years to come.

While do-it-yourself projects can be fun and fulfilling, there is always a potential for personal injury or property damage. We strongly suggest that any project beyond your abilities be left to licensed professionals such as electricians, plumbers, and carpenters. Any action you take upon the information on this website is strictly at your own risk, and we assume no responsibility or liability for the contents of this article.

How to Build a Raised Garden Bed (2024)

FAQs

How to Build a Raised Garden Bed? ›

Soil is the foundation of your garden, and you want it to be healthy so you can set your plants up for success! We recommend buying high-quality, nutrient-rich soil in bulk. Or, you can make a soil mix with equal parts topsoil, organic materials (leaves, composted manure, ground bark), and coarse sand.

What do you put in the bottom of a raised garden bed? ›

Soil is the foundation of your garden, and you want it to be healthy so you can set your plants up for success! We recommend buying high-quality, nutrient-rich soil in bulk. Or, you can make a soil mix with equal parts topsoil, organic materials (leaves, composted manure, ground bark), and coarse sand.

How to calculate amount of soil needed for raised garden bed? ›

To calculate:
  1. Measure the length, width and height of your bed. (Unless the boards are very thick, don't worry about inside/outside measurements.) ...
  2. Multiply all the measurements together: 6 x 3 x 1.4 = 25.2 cubic feet.
  3. Divide the answer by 27 to get the number of cubic yards.

How do you prepare soil for raised garden beds? ›

Remove all rocks, old roots, and plant debris. Dig down a little further with the shovel (a few more inches) to just loosen up the soil. Mix the soil with organic matter such as compost. We recommend that the compost make up about 25% of your soil.

How many bags of soil do I need for a 4x8 raised bed? ›

For a 4x8-foot raised bed with a 6” height, using Mel's Mix: about 5 cubic feet each of compost, peat moss, and vermiculite is needed. It usually takes about two to three bags of purchased fertile mix (1.5 cubic feet each) to cover the bed surface to a depth of 2 inches.

Should I put rocks in the bottom of my raised garden bed? ›

The answer is no! Here are some reasons why we recommend against adding rocks to the bottom of your raised beds: Hindered root growth. Rocks in the bottom of a raised garden bed can impede the growth of plant roots, particularly if they are large or densely packed.

What are three mistakes to avoid when gardening with raised beds? ›

Gardening with raised beds can be a rewarding and enjoyable experience, but it's important to avoid common mistakes that can lead to disappointing results. By avoiding overcrowding plants, using high-quality soil, and paying attention to watering and drainage, you can ensure a healthy and productive garden.

Why put cardboard in raised beds? ›

It acts as a physical barrier to block out pernicious weeds. Usually, 2 – 3 layers of cardboard will suffice, though you may want layers in more weed-prone areas. The damp environment created by the cardboard is conducive to earthworms and other beneficial soil microorganisms.

Should I put landscape fabric under a raised bed? ›

Landscape fabric is beneficial for raised garden beds, here are just a few of the many reasons why you should use landscape fabric for raised bed gardening: Prevents soil erosion in a raised bed: As a liner, landscape fabric lets water drain away from the soil while leaving the soil intact.

How many bags of soil do I need to fill a 3x6 raised bed? ›

To fill a 3x6 bed with 10" sides, you will need 15 cubic feet of blended soil. To create the blend, use the following quantities: 9 cubic feet of topsoil (9 20-quart bags) 4.5 cubic feet of compost (4.5 20-quart bags)

How deep should soil be in a raised bed? ›

In general, eight inches is a good minimum depth for raised garden beds. If there are issues with drainage, or the plants in the box are sensitive to excess moisture around their roots, additional depth can help by allowing water to seep naturally.

How high should soil be in a raised garden bed? ›

The most popular height for raised beds is 11″. (This is the height of two standard “2 x 6″ boards, which actually measure 1.5″ x 5.5”.) This height provides sufficient drainage for most crops. For best results, there should be another 12″ or more of good soil below the bed.

What vegetables should not be planted together? ›

14 Vegetables You Should Never Plant Together—Gardening Experts Explain Why
  • 01 of 14. Beans and Onions. ...
  • 02 of 14. Tomatoes and Potatoes. ...
  • 03 of 14. Corn and Tomatoes. ...
  • 04 of 14. Tomatoes and Brassicas. ...
  • 05 of 14. Cucumber and Squash. ...
  • 06 of 14. Lettuce and Celery. ...
  • 07 of 14. Fennel and Tomatoes. ...
  • 08 of 14. Peppers and Cabbage.
Jan 16, 2024

What is the best soil mix for vegetable gardens? ›

Gardening magazine's trial of the best soil mixture for raised beds found that a blend of 50% topsoil, 25% coarse sand and 25% compost was best.

What is the best soil mix for raised bed tomatoes? ›

The soil is the key ingredient to a successful raised vegetable bed. Get enough light topsoil or raised bed soil to fill the estimated depth of the raised bed. Since tomatoes are heavy feeders and prefer a rich, organic soil, mix in two- to three-inch layers of compost or cow manure to the top one-third of the topsoil.

Is it cheaper to buy or build raised garden beds? ›

On average, a DIY raised bed constructed from wood will cost $25 to $50 per square foot. To have a wooden raised bed constructed and installed for you, budget for at least $100 per square foot. (Find a kitchen garden company in your area.)

How deep should a raised garden bed be? ›

The Best Height for Raised Beds

Keep in mind that beds 18 inches deep or more will have better drainage than shorter beds. While most plants don't need anything deeper than 18 inches, I prefer beds that are two feet deep (24 inches). The extra height is mostly just for the ease and convenience of the gardener.

What kind of wood should I use for a raised garden? ›

Cedar is often considered the golden standard for building raised beds, and it's my favorite option to use. The downside is that the cost of cedar has, unfortunately, risen a lot over the last few years. Redwood has the same benefits as cedar, but it's also been priced out of many gardeners' budgets.

How deep should a raised bed garden be? ›

Vegetable Beds: On the other hand, when it comes to vegetable beds, the bed must be approximately 12 to 18 inches deep to ensure adequate depth for the roots of your plants. This is especially important if your raised bed is placed on cement or the patio, which will inhibit roots from growing deeper into the ground.

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