We Value Your Privacy

We and our partners use technology such as cookies on our site to personalise content and ads, provide social media features, and analyse our traffic. Click below to consent to the use of this technology across the web. You can change your mind and change your consent choices at anytime by returning to this site.

Update Consent
Loading ...

How to build a base for a greenhouse

Updated February 21, 2017

You've got a lot of considerations when building a base for your greenhouse. A good base must provide drainage, be anchored to the ground and prevent weeds from growing on the greenhouse floor. An inexpensive yet high-quality choice for greenhouse base material is wood, especially woods that resist decay like cypress or cedar.

Loading ...
  1. Plan the size of the greenhouse. Lay string out along the area you intend to build the greenhouse. Measure the perimeter with a measuring tape to determine how long your wood should be.

  2. Cut 2-by-4-foot-long boards to fit the frame of your greenhouse. Place the boards out along the intended layout.

  3. Screw the frame together, using lag screws at least 5 inches long. Use one screw for each joint, for a total of four screws. Insert the screw into the centre of the board and use an electric or manual screwdriver to insert the screw.

  4. Cut a length of ground cover or weed barrier to use as flooring. Ensure the ground cover is long enough to fit under the frame, with enough room to staple it to the frame. Do not use a black tarp, since this will not allow water drainage. Ground cover is breathable, so water can drain through it. Ground cover also prohibits weed growth; hence, its nickname of "weed barrier."

  5. Attach the ground cover to the wooden base with a staple gun, using one staple every 3 to 4 inches. Pour at least 2 inches of gravel or crushed rock on top of the ground cover. Construct your greenhouse frame on top of this base.

  6. Tip

    Make sure your planned site is level. If it isn't, you'll have drainage problems later on.

Loading ...

Things You'll Need

  • Measuring tape
  • String
  • Plywood, 2 by 4 feet
  • Hand saw
  • 4 lag screws
  • Ground cover
  • Scissors
  • Gravel

About the Author

A successful website writer since 1998, Elton Dunn has demonstrated experience with technology, information retrieval, usability and user experience, social media, cloud computing, and small business needs. Dunn holds a degree from UCSF and formerly worked as professional chef. Dunn has ghostwritten thousands of blog posts, newsletter articles, website copy, press releases and product descriptions. He specializes in developing informational articles on topics including food, nutrition, fitness, health and pets.

Loading ...