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Composite Raised Garden Bed - 4' x 8'


Our price: $129.95


All-season durable, warp resistant and maintenance-free, our 4' x 8' Composite Raised Garden Bed is ideal for growing healthy organic vegetables. Available in four height options: 5.5", 11", 16.5", or 22" tall. read more

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Lead time: 3 Business Days

Our price: $129.95


Composite raised garden beds are an alternative to raised beds made from wood. All-season durable, warp resistant and maintenance-free, our 4' x 8' raised garden bed kit with composite timbers is ideal for growing healthy organic vegetables.

Features & Benefits:

  • Easy to assemble raised garden bed kit
  • Choose between four heights: 5.5", 11", 16.5", or 22" high
  • Eco-friendly composite made from recycled plastic and natural wood fibers
  • Attractive wood grain texture and color
  • Includes all composite boards, corner joints and screws

Size Options:

  • 4' Wide x 8' Long x 5.5" High
  • 4' Wide x 8' Long x 11" High
  • 4' Wide x 8' Long x 16.5" High
  • 4' Wide x 8' Long x 22" High


Composite boards are resistant to warping from winter frost, and won't rot from exposure to rain and moisture. The connecting joints are made of reinforced ABS plastic, and the composite timbers are made from a blend of sustainable hardwood fibers and post-consumer recycled plastic.

Each board is a standard 2 x 6 size (actual dimensions: 1.5" x 5.5") and 44.5 inches long which creates a 4 foot span from joint to joint.


Installation involves sliding the timber into the joint, and using the included zinc-plated steel screws to secure the timber in the joint. The joints have stakes which are pressed into the ground. To create a second level, slide the stake of another joint into the top of the ground-level joint from above. It is helpful to have a power drill to set the screws.

The patented anchor joint system allows installation on hard surfaces such as rooftops, patios or decks as well as traditional landscapes.


5 Year Manufacturer's Warranty

100% Satisfaction Guarantee

We want you to be completely satisfied with every purchase you make. If you are in any way dissatisfied with a product you ordered, we'll exchange it, replace it or refund your money within 30 days of purchase. Simply email us the problem, and we'll take care of you. Certain products have extended warranties (up to 50 years!) that are listed on the particular product page. Please call us at 1-888-451-6752 if you need further clarification.

Additional Information

Dimensions 4' W x 8' L (Height options: 5.5", 11", 16.5", or 22" tall)
Material Composite plastic
Board Thickness 2"
Key Feature Easy to assemble composite plastic raised garden bed
Assembly TIme 30 Minutes
Origin Made in China

Shipping Information

Shipping Details:
Insured against damage or loss while in transit
This Product Ships To:
US Lower 48
Ships Via:
Fedex or UPS

Questions about the Composite Raised Garden Bed - 4' x 8'

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  • From Jody at 9/21/10 9:18 AM
    • my area is a foundation in the back and one 4' side. 27' x 4' . How much do I purchase? Thanks.
    • This depends on if you want the bed to be one level high (eg 5.5" tall) or two levels high (11" tall). Since the boards come in 4' lengths, your final bed will be 28' long unless you cut some of the boards shorter. To build a 4'x28'x5.5" bed, that will require 16 boards, plus the anchor joints.

      Feel free to call us and we can work together to find the best solution.
    • Do you find this question helpful?  Yes  No
  • From Cindy Korff at 10/4/10 5:10 AM
    • Our school is considering buying the raised garden beds for science/environmental education. Which height should we choose and why that height?

      Thank you!
    • For the composite raised garden beds we find that 12" high is the most popular height for gardeners. This height allows you to garden easily but also have a fairly sturdy bed. When you get higher than 12" you have to be a little bit more cautious about how rough you are with the beds.
    • Do you find this question helpful?  Yes  No
  • From Bill L at 1/3/11 12:43 PM
    • This states that a4x8x12 bed is 125 us$. if i wanted to purchase another to make a 12x5 are these easily joined? What material is this made from ? an what is the materials life span estimated to be? Is there a spec sheet for the material? How are these anchored? Thank You <<<<Bill>>>>
    • Hi Bill,
      The 4 x 8 x 12" composite raised bed is $250. (The 4 x 6 x 6" model is $125.)
      The boards come in 4' lengths so any addition you make must be in intervals of 4'.
      The boards of made of a mix of polyester resin and wood flour. They are hollow with a center support inside. These boards are highly resistant to weather extremes and long lasting.
      Here is a link to the boards with more information.
      The anchor joints and stacking joints are used to connect the corners and add height to the bed.
      Here is a link to the anchor joints, and you can click the Specifications tab for more information.
    • Do you find this question helpful?  Yes  No
  • From Douglas Kelly at 4/9/12 9:59 PM
    • Do you recommend these be installed over a concrete slab such as a patio or part of a driveway?
    • A raised bed can be assembled over a concrete surface but you will need to attend to drainage. If the concrete is coarse, like aggregate finish concrete popular on many decks, then water will drain below the bed sides. Smoother concrete surfaces may require that the sides be blocked up 1/4". Also, any drained water will have dirt residue and over time this will stain the concrete. You can remove the stain with a stiff broom of power wash from time to time. And be sure that the concrete drains away from the home. This is usually the case.
    • Do you find this question helpful?  Yes  No
  • From Linda at 4/15/12 12:10 PM
    • I live in an area that I have ground Squirrels and gofers is there any protection on the bottom to keep these pest from coming through the bottom?
    • Raised beds are open on the bottom. If you need to protect against burrowing pests, you can lay a piece of 1/2" galvanized mesh on the ground below your bed. For best results, cut the sheet 6" longer and wider than the bed, and bend the edges up 3" all around. Then staple the folded edges to the inside of the bed near the bottom.
    • Do you find this question helpful?  Yes  No
  • From Jerry at 9/22/17 2:18 PM
    • I want to purchase this for my wife who has a back problem and finds bending problematic. Can this be purchased with a bottom and then raised on blocks so it can be used in a standing position? If this were possible, perhaps with a simple plywood bottom, should there be some sort of liner, and, if so, should the liner be porous to allow for drainage?
    • This raised bed cannot be purchased with a bottom, but one can be installed. Yes a porous liner is best to allow for drainage. Please note that any modifications to the raised bed will void the warranty.
    • Do you find this question helpful?  Yes  No
  • From Paul at 9/28/17 3:46 PM
    • To fit into my fenced in garden area I would need to trim two of the beds by 6 inches, making it 3'6" by 8'. Can the boards be trimmed and still be correctly anchored in the brackets?
    • Yes they can be trimmed and still be anchored to the brackets, however any modifications will void the 5 year warranty.
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4' x 8' x 11.5" Composite Raised Garden Bed Click to Enlarge
4' x 8' x 11.5" Composite Raised Garden Bed 

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