13 Free Greenhouse Plans

Barn Greenhouse

This free greenhouse plan is for a barn-style greenhouse that will help you grow your plants while looking stylish with its sturdy corrugated metal and greenhouse plastic sides. The free greenhouse plan includes photos, diagrams, a materials and tools list, written instructions, and videos.

Geodome Greenhouse

Northern Homestead has shared its free greenhouse plan for building a GeoDome. Use this plan and you'll get a greenhouse that's lightweight yet secure, absorbs lots of light, has a lot of ground growing space, and one that makes quite the statement. There's a materials list, tools list, written directions, diagrams, and photos to help you build it.

It also has other posts on its greenhouse about how to arrange plants within it, how to cover it, how to add a hot water tank, and more.

Low-Cost Hoop Greenhouse

Here's a free greenhouse plan that, when you build it, will only cost you $50 for all the materials. A materials list, construction steps, and building tips are all included in this free greenhouse plan from The Door Garden.

Greenhouse With Sleeping Loft

If you're feeling ambitious, then this free greenhouse plan from Mother Earth News might be just for you. You'll get a completed greenhouse that's solar-heated and even has a sleeping loft. Scroll through the pages of this free greenhouse plans to find a materials list, images, and directions for building this great-looking greenhouse.

Polythene Greenhouse

This free greenhouse plan by BuildEazy is conveniently built out of mostly 2-by-4-inch wood studs. Click through this free greenhouse plan to find shopping lists, directions, and diagrams. There are also photos of the greenhouses built by other readers who have used this plan.

14-Foot Greenhouse

HowToSpecialist has a free wood greenhouse plan that will only take you a few weekends to build. Included in the free greenhouse plans are a materials list, diagrams, tools list, and tips.

Recycled Window Greenhouse

Instructables has a free greenhouse plan that uses a unique building material—old windows. It creates a great-looking structure that's environmental and budget-friendly. There are lots of color photos and written instructions to help you build one for your yard.

16-Foot Greenhouse

This free greenhouse plan by HowToSpecialist will give you everything you need to build a 16-foot long greenhouse that's perfect for your backyard. This free greenhouse plan includes lots of diagrams and illustrations along with written instructions.

10-Foot Greenhouse

Here's another free greenhouse plan from HowToSpecialist. This plan for a small greenhouse is perfect for a small backyard. You can use the written instructions, materials and tools list, as well as tips and diagrams to build this greenhouse.

Little Window Greenhouse

This free greenhouse plan from Crafts a la Mode takes some old windows and makes them into a greenhouse just big enough for a few plants. It's a gorgeous greenhouse that doubles as yard decor.

Arched PVC Greenhouse

Here's a free plan by PVC Plans for an arched greenhouse that uses PVC pipes. Download the free greenhouse PDF plan and you'll get a material list, diagrams, and written directions.

32-Foot Greenhouse

FloridaGardener.com has a nice greenhouse plan that you can print and use for free. A combination of wood and PVC pipes are used to build this large, hooped greenhouse.

8-by-10-Foot Greenhouse

BuildEazy has another free DIY greenhouse plan, this one builds a large 8-by-10-foot greenhouse that you'll be able to fit all kinds of plants into. There are 13 pages in this free plan that includes drawings, photos, diagrams, and instructions on how to build it.