A DIY greenhouses can extend your growing season, allow you to propagate plants from your yard, and let you grow tender or delicate plants you might not otherwise be able to grow. I’ve seen lettuce and spinach grow in a greenhouse when there was a foot of snow on the ground. An old gardening friend of mine would use her greenhouse to pot up all her volunteer seedlings from her yard, grow them in four inch pots in her DIY greenhouse, then have a plant sale to raise money for her charity. Any way you look at it, if you’re a serious gardener, you would love to get your hands on a greenhouse. So how do we solve problems at TGG? We DIY – greenhouse projects, of course!

 

18 Awesome DIY Greenhouse Projects

 

DIY Greenhouses

How to Build a Greenhouse

We found you some great DIY greenhouse projects and plans that range from a temporary cold frame, all the way to a full size backyard greenhouse! Before you pick out a project, read over our “getting started” tips to help you choose, site and start your DIY greenhouse.

 

      Planning a Greenhouse

  • Position your greenhouse running lengthwise east to west. This will give it the longest stretch of daylight each day.
  • Make sure your greenhouse will get at least 6 hours of sun in the winter.
  • Remember, if you plan on having electricity in your greenhouse, site it close enough to your source.
  • Try to position it away from kids play areas.
  • Make sure your DIY greenhouse has a working thermometer. You will need to pay attention to temperature unless your system has automatic venting. In the winter, the minimum inside temp should remain between 45-60 degrees for active growing. A sunny winter day can quickly heat up the interior of a greenhouse, even if its freezing outside. Be sure to open vents and allow cool air to enter when the temps rise too much.

 

DIY Greenhouse Projects

Oh, My, Amazing!  Obsessed with this DIY greenhouse made from old windows! This is from Stephanie at ‘Garden Therapy‘. Forget the old way of making homemade greenhouses with plastic sheets over PVC, this is a full sized greenhouse that is so nice! I mean, wouldn’t you be proud to have this in your yard?

 

Love, love, LOVE this window DIY greenhouse. This one is a cannot miss! This is from ‘Liz Marie Blog‘, and is fantastic. I mean, magical, right? Made from old windows, I would possibly never leave this pretty greenhouse. Like, ever. While there isn’t a full tutorial for this full size greenhouse (you could make it based on the previous tutorial!) be sure to scroll to the bottom of her post. Liz Marie has a mini version of this project, complete with a tutorial!

 

 

A husband and wife teamed together to build a greenhouse made from vintage windows, and oh my. This is like gardening church! Do you see that stained glass accent! Check out their project at ‘Hometalk‘! If you love this project as much as I do, you may want to jump over real quick and check out our post on DIY She Sheds too!

 

Here is a mini window DIY greenhouse by ‘Crafts Ala Mode‘. They simply screwed together old windows, and made this incredibly charming homemade greenhouse! Short tutorial walks you through it.

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Love this DIY greenhouse from windows made by the folks at ‘Black & Decker‘. Full tutorial for this project, so start hunting for old windows!

 

Melissa at ‘Empress of Dirt‘ has a full tutorial and a video on her lean to DIY greenhouse. This is the perfect way to take advantage of wasted space, and add on a whole extra growing season. You have to click through and see the inside too!

 

This homemade greenhouse was made by ‘Modern Builds’ via ‘Ryobi Nation‘. They built this with just 2×4’s and polycarbonate panels. You can customize this plan to the size greenhouse you need, too. They even have a how to video.

 

From ‘Handyman Magazine‘, this DIY greenhouse looks so professional, we originally thought it was for sale! Follow along with their tutorial on how to build this for yourself, including instructions on adding an optional vent. Another with a how to video to make sure you build it right.

 

Want to save the earth? ‘Reap Scotland‘ has free plans on how to make a plastic bottle DIY greenhouse. What a great idea and re-use of materials! Update: A lot of people have asked about the instructions for the plastic bottle greenhouse…Our original source for this project no longer had the instructions, but we found a similar PDF tutorial for you at ‘Reap Scotland’, above. Enjoy!

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Here’s another soda bottle DIY greenhouse for inspiration, photo by John Rutherford.

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Ok, let’s get serious. ‘Ana White‘ made her own barn style DIY greenhouse from her plans, and it is incredible! All her DIY plans are amazing, but with all the step by step photos, I really feel like I could make this. Now picture this filled with greenery and flowers!

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No, this isn’t 1982. This geodome greenhouse is perfect for areas with high winds and heavy snows. ‘Northern Homestead‘ made this easy for the rest of us, because they did all the hard work. They even included a link to an online calculator to help figure out the mathematics of the dome!

12 Great DIY Greenhouses

 

DIY Mini Greenhouse Solutions

Need a quick and inexpensive idea for protecting plants already in the ground? 2-Liter soda bottles and some ingenuity create DIY mini greenhouses. From ‘My Brown Thumb‘.

18 Awesome DIY Greenhouse Projects

 

Another take on this mini DIY greenhouse idea, using the plastic bottles within pots. This garden cloche idea is from ‘This Old House‘. Simply cut off the bottom of the plastic bottle, and slip over the plant in the pot. Remove the top when you need to vent the plant.

 

Planting seedlings? This is a genius mini greenhouse idea from ‘Garden Therapy‘.  You might even be able to find cheap umbrellas at the dollar store. Just make sure they are clear to allow in light! Remove the handle, then insert into the container, or straight into the ground to protect seedlings or tender plants.

 

DIY Cold Frames

If you don’t want to build a full sized greenhouse, or you don’t have room for one, consider a DIY cold frame. They do the exact same thing as a greenhouse on a smaller scale. And, they can be portable too!

Sunset’ Magazine‘ teaches us the basics of how to build a cold frame.

 

Fine Gardening‘ has an audio slideshow taking you through all the steps to build a cold frame yourself. Plus, this really handy schematic showing measurements and materials.

DIY Greenhouse Kits

Ok, so suppose you don’t know if you want to take on the project of a DIY greenhouse, but you don’t want to pay a contractor to do it either. (Don’t blame you, that could costs thousands!) There is another option. DIY greenhouse kits. You still build this greenhouse yourself, but all the materials get shipped right to you with full instructions. You can find a whole selection in a variety of price ranges at ‘Wayfair‘. We like the “Palram Polycarbonate Greenhouse“. It’s 6 feet by 4.5 feet, so it’s the perfect size for home gardens. And, it’s free shipping! This one has tons of great reviews, and it’s pretty, too! The polycarbonate panels look like glass!

If you loved our post on DIY Greenhouse Projects, then you won’t want to miss our post on Easy Steps to Square Foot Gardening or How to Build a She Shed! And don’t forget, if you Pin your favorites for later, you won’t lose them for when you are ready to do the projects! And don’t forget to join our Home & Garden DIY Facebook group and our Pinterest page so you see right away when we post new ideas and advice!

Note: This post has been updated with fresh projects.

 

Image Credits: Handyman Magazine, Garden Therapy, Liz Marie, Hometalk, Crafts Ala Mode, Black & Decker, Empress of Dirt, Ryobi Nation, Ana White, Flickr, Ana White, Northern Homestead, Brown Thumb, This Old House, Garden Therapy, Sunset, Fine Gardening, Wayfair


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14 Comments

  1. Garrett January 21, 2016 at 6:37 pm

    Hi, great diy greenhouse ideas. I built one a few years ago. I used 3m plastic, my vegetables flowered but never produced. It eventually ripped due to wind and fell apart so I had to take it all down. Anyway I’m wondering what the deal with the plastic and the plants not producing. Thanks

    Reply
    1. jana sutherland March 17, 2016 at 6:41 am

      Did you allow access for pollinators such as bees?

      Reply
  2. Lillian Keeton December 14, 2015 at 3:56 am

    I have pinned the greenhouse made from plastic water bottles. The instructions are no longer on the site. Would love to have the instructions. It was posted by Ana White.

    Reply
    1. Kathy Woodard December 14, 2015 at 11:14 am

      Hi Lillian! It does appear that it is no longer on her site, and after doing a search, we haven’t been able to track it down… we will keep looking for you!

      Reply
      1. Lillian Keeton December 18, 2015 at 3:38 pm

        Thanks Cathy. I appreciate all your
        help.

        Reply
        1. Lillian Keeton December 18, 2015 at 3:41 pm

          Thanks Kathy. I appreciate
          all your help.

          Reply
  3. mei yun chang October 1, 2015 at 5:56 pm

    I like so beautiful.

    Reply
  4. Laurie May 24, 2015 at 3:31 pm

    I bought a few plants at an early bird sale in April had to think of a quick and easy greenhouse for my new plants. I used my large wire kennel. We had not used it for years and I didn’t think the dog would miss it. I set it in my garden and wrapped it with clear plastic. I wrapped the door separate so I could use it to check on the plants. It worked like a charm and the plants thrived for four weeks. Now I know I can hit the sale next spring!

    Reply
    1. Jayson May 6, 2017 at 6:35 pm

      That’s a great idea!
      What did you use for the top roof supports? They have 10x10x6 foot chain link kennels with door for $299 at tractor supply that I think would make a great greenhouse base.

      Reply
  5. Linda April 28, 2015 at 7:43 am

    Thanks so much for featuring my mini greenhouse made from old windows!! Much appreciated. Feel free to take any pictures from Crafts a la Mode. Of course, I love the link back. Thanks so much again. Linda Crafts a la Mode

    Reply
    1. Kathy Woodard May 21, 2015 at 2:19 pm

      Thanks Linda! We LOVE your greenhouse project!

      Reply
  6. Simona Moon March 25, 2015 at 8:52 am

    Beautiful ideas! <3 If I had a garden I would try that!

    Reply
  7. Suzye December 22, 2014 at 6:58 am

    Excelente! !! Shows.

    Reply

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