DIY Cold Frame Plans 

By Betsy Matheson Symanietz 

Take on this relatively simple DIY cold frame project over the weekend to save money, extend your growing season and become a more self-sufficient gardener.  

A cold frame is a simple way to create an area with a stable temperature for giving seedlings a head start in spring and for holding on to the last cold-hardy greens in the fall. You can easily construct your own cold frame, using the pland and instructions found in Weekend DIY Project: How to Build a Cold Frame, and the diagram and charts below.

 Cold Frame Parts Illustration 

 

 

Cutting List 

 
Key  Part  No.  Size  Material 
A     Side 2 3/4 x 16/28 x 36 inches Ext. Plywood
B Front 1 3/4 x 16 x 36 inches Ext. Plywood
C Back 1 3/4 x 28 x 36 inches Ext. Plywood
D Lid frame 2 3/4 x 4 x 31 inches Ext. Plywood
E Lid frame 2 3/4 x 4 x 38 inches Ext. Plywood
F Cover 1 1/8 x 37 x 38 inches Plexiglass

Tools and Materials

(2) 3 x 3 inch butt hinges (ext.)

(2) 4-inch utility handles

(4) Corner L-brackets (3/4 x 2-1/2 inch)

(1) 3/4 inch x 4 x 8 foot plywood (ext.)

1/8 x 37 x 38 inch plexiglass

Exterior caulk/adhesive

Exterior wood glue

Exterior paint

2 inch deck screws

No. 8 x 3/4 inch wood screws

Circular saw

Drill/driver

Pipe clamps

Straightedge cutting guide

Content Tools