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Grow Bed Extension Kits

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Mini Grow Bed Extension Kit
Item # 37-502
$36.95
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Grow Bed Extension Kit
Item # 37-503
$39.95
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Exclusive | Extension Kits for Our Grow Beds

  • These extension kits add 3' to the length of our Grow Beds
  • Ideal for small-space kitchen gardens
  • Choice of 2 sizes
  • How much soil? Use the Soil Calculator to figure out how much you need for this raised bed

A Grow Bed is the most efficient garden area you'll ever tend, with black plastic sides that absorb heat to warm soil early in the season, then help retain moisture all summer long. These two-sided extension kits double the growing space of our popular grow beds by creating a raised bed that is the same width but twice as long.

100% recycled plastic
  • Earth-friendly, 100% recycled plastic
  • Each kit contains 2 sides and a hardware pack
  • Grow Bed Extension Kit is 38-3/4" L x 38-3/4" W x 10" H
  • Mini Grow Bed Extension Kit is 38-3/4" L x 20-3/4" W x 10" H
  • Easy assembly; requires a drill
  • Gardener's Supply Exclusive

REVIEW SNAPSHOT®

by PowerReviews
Grow Bed Extension Kits
 
4.2

(based on 30 reviews)

97%

of respondents would recommend this to a friend.

Pros

  • Weather proof (24)
  • Holding capacity (20)
  • Drains well (17)
  • Attractive (16)

Cons

  • Difficult setup (7)
  • Flimsy (4)

Best Uses

  • Outdoor plants (25)
  • Growing seeds (9)
    • Reviewer Profile:
    • Avid gardener (18), Getting started (8)

Reviewed by 30 customers

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Displaying reviews 1-10

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1.0

Missing Parts

By Jet

from Portland, OR

About Me Midrange Shopper

Verified Reviewer

Pros

    Cons

    • Difficult To Assemble
    • Missing Assembly Parts
    • Requires Electric Drill

    Best Uses

      Comments about Grow Bed Extension Kits:

      This product has been a big waste of time. It arrived without assembly screws, so I called Customer Service and they sent separately. Then i had to find an electric drill (question - why don't they just predrill the 8 holes at the factory? It would take them probably 10 seconds). Once i had a drill, I discovered that i was also missing the Corner Pins! So called customer service AGAIN and they said would send. So, still waiting to assemble.

      (3 of 3 customers found this review helpful)

       
      5.0

      Love this option!

      By HJ

      from Carlsbad, CA

      About Me Avid Gardener

      Verified Buyer

      Pros

      • Attractive Design
      • Drains Well
      • Holding Capacity
      • Lightweight
      • Looks chic on my slope
      • Sturdy
      • Weather Resistant

      Cons

        Best Uses

        • Grow fruits vegetables

        Comments about Grow Bed Extension Kits:

        Love the mini grow bed and extender. Put on my slope which didn't allow for a lot of depth but I could go wider so this was perfect solution! Looks great!

         
        5.0

        Great Product

        By Andie

        from Georgia

        About Me Getting Started

        Verified Buyer

        Pros

        • Drains Well
        • Holding Capacity
        • Space saver
        • Weather Resistant

        Cons

        • None

        Best Uses

        • Garden addition
        • Outdoor Plants

        Comments about Grow Bed Extension Kits:

        I am using this bed extension to allow me to grow more vegetables. It is perfect for my small yard.

        (1 of 1 customers found this review helpful)

         
        4.0

        Great way to expand your growing space

        By Elena the Artist

        from Columbia, MD

        About Me Avid Gardener

        Verified Buyer

        Pros

        • Drains Well
        • Holding Capacity
        • Weather Resistant

        Cons

        • Difficult To Assemble
        • Flimsy

        Best Uses

        • Growing Seeds
        • Outdoor Plants

        Comments about Grow Bed Extension Kits:

        I have been growing backyard vegetables in the 3' x 3' Grow Bed for several years. I wanted to expand my growing space and the Grow Bed Extension Kit was just perfect. The only drawback to the plastic sides is that over time they bend a bit from the weight of the soil (mine sits on a slight incline). I had a hard time drilling holes for the connecting plates, but it was manageable. It's still a great value for the price.

        (1 of 3 customers found this review helpful)

         
        4.0

        I would buy this product again

        By didi

        from San Rafael CA

        About Me Avid Gardener

        Verified Buyer

        Pros

        • Drains Well
        • Holding Capacity
        • Weather Resistant

        Cons

        • Flimsy

        Best Uses

        • Growing Seeds
        • Household Plants

        Comments about Grow Bed Extension Kits:

        I use it for for plants.

         
        5.0

        Perfect for a small city lot!

        By Guusje

        from Houston

        About Me Getting Started

        Verified Buyer

        Pros

        • Attractive Design
        • Weather Resistant

        Cons

          Best Uses

          • Outdoor Plants

          Comments about Grow Bed Extension Kits:

          This is my third purchase. They are perfect for my small inner city house. They snap together very quickly. If you buy the extenders you do need a drill - since you have drill 4 holes. Not having one I traded some future vegetables with a neighbor. If I had more yard I'd buy more beds.

           
          5.0

          Great Product!

          By Guusje

          from Houston, Texas

          About Me Getting Started

          Verified Buyer

          Pros

          • Attractive Design
          • Drains Well
          • Holding Capacity
          • Weather Resistant

          Cons

            Best Uses

            • Growing Seeds
            • Outdoor Plants

            Comments about Grow Bed Extension Kits:

            I have a big city pocket yard and these are perfect for making the best use of what little yard I have. The only con is that an electric drill is required to attach the extensions. I had to barter with a friend who has a drill to get it put together.

            (1 of 1 customers found this review helpful)

             
            4.0

            Very nice once it's put together

            By JH

            from Manchester, CT

            About Me Avid Gardener

            Verified Reviewer

            Pros

            • Holding Capacity
            • Weather Resistant

            Cons

            • Difficult To Assemble

            Best Uses

            • Growing Seeds
            • Outdoor Plants

            Comments about Grow Bed Extension Kits:

            I would only buy another if you can have them made with predrilled holes. It was very difficult for me to drill the holes and put together.

             
            5.0

            Wonderful Product!

            By Work4veggies

            from eastern North Carolina

            About Me Master Gardener

            Verified Buyer

            Pros

            • Holding Capacity
            • Weather Resistant

            Cons

              Best Uses

              • Outdoor Plants

              Comments about Grow Bed Extension Kits:

              I now have four 3' x 6' grow beds ... 2 were made using the extension kits. First time I added the new extension kit, the bed was empty and it was a done in a jiffy. Second time I added the new extension kit, the bed was overflowing with strawberry plants ... and it was still done quickly! The U shaped metal piece provides the added support to prevent bulging sides. Great idea.

              (2 of 4 customers found this review helpful)

               
              4.0

              It really works!

              By Mammak

              from Baltimore, MD

              About Me Getting Started

              Verified Buyer

              Pros

              • Holding Capacity
              • Weather Resistant

              Cons

                Best Uses

                • Outdoor Plants

                Comments about Grow Bed Extension Kits:

                I wondered whether to order another 3 x 3 raised bed or the extension kit. Definitely get the extension kit. There are plates to connect the two together and a bar that goes under the dirt to keep the sides straight. Better than I thought it would be.

                Displaying reviews 1-10

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                Product Instructions

                Download instructions for Grow Bed Extension Kits as a PDF

                Articles

                There are no special shipping restrictions or charges associated with this item. For detailed information about our delivery methods and charges, click here.

                We're proud of the fact that this item is shipped to you directly from our warehouse in Vermont, by one of our 250 employee-owners. In-stock items are packed with care and shipped within the next business day to ensure prompt delivery to your home and garden!

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