How to build a mini greenhouse

This step by step diy project is about how to build a mini-greenhouse plans. If you want to build a learn more about how to build a simple greenhouse where you can fit plenty of pots, these free plans are what you are looking for. If you don’t waste materials, this projects requires materials that costs under 30 dollars. Check out rest of the greenhouse plans on our site.

You should always plan everything from the very beginning, in order to prevent costly mistakes and to save time. For this project, you don’t need another person to help you assembling the garden mini greenhouse. Invest in high quality lumber and plywood, as the components will be exposed to bad weather. Protect the components with appropriate paint or stain.

There are a few tips that you should take into account, if you want to get a professional result. Therefore, take accurate measurements and use professional tools when making the cuts or when drilling pilot holes. Align the components at both ends and add waterproof glue to the joints, if you want to create a rigid structure. See all my Premium Plans in the Shop.

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Small greenhouse plans

Building a mini greenhouse

Materials

A – 4 pieces of 2×2 lumber – 48″ long POSTS
B – 12 pieces of 1×1 lumber – 21″ long SUPPORTS
C – 6 pieces of 2×2 lumber – 15 3/4″ long, 1 piece – 24″ long RAFTERS
D – 2 pieces of 2×2 lumber – 21 3/4″ long, 2 pieces – 43 1/2″ long DOOR

2×2 lumber – 8 ft – 7 pieces
2 1/2″ screws – 100 pieces
50 sq ft of greenhouse film

Tools

Safety gloves, glasses
Miter saw, jigsaw
Chalk line, tape measure, spirit level, carpentry pencil
Drill machinery and drill bits

Tips

Use a good miter saw to make the angle cuts
Drill pilot holes before inserting the screws

Time

One Week

Building the sides

The first step of the project is to build the sides for the mini-greenhouse. As you can easily notice in the diagram, we recommend you to cut the components out of 2×2 lumber at the right size. Drill pocket holes at both ends of the horizontal components and insert 2 1/2″ screws into the vertical supports. Make sure the corners are right-angled.

Assembling the mini greenhouse

The next step of the outdoor project is to assemble the two sides of the greenhouse together. Cut the supports out of 2×2 lumber and drill pocket holes at both ends. Fit the supports to the structure and secure them using 2 1/2″ screws. Notice the two front supports that are aligned with the back edge of the vertical supports.

Building the roof

Build the rafters using 2×2 lumber. Cut one end of the components at 45 degrees, by using a circular saw. Drill pilot holes and insert 2 1/2″ screws to lock everything together. Leave no gaps between the components.

Fitting the front door

Build the door using 2×2 lumber. Drill pocket holes at both ends of the vertical components and insert 2 1/2″ screws into the top and bottom supports. Place the door inside the opening and secure it to the frame using hinges. In addition, fit a door latch for a professional result.

Mini-greenhouse plans

Last but not least, we recommend you to take care of the finishing touches. In order to get a professional result, fill the holes and the gaps with wood filler and let it dry out for a few hours. Check if there are protruding screws and fix this issue, if necessary.

Mini greenhouse plans – dimensions

How to build a mini greenhouse

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