80 Cheap and Easy DIY Greenhouse Ideas

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Extend your growing season when you live in a cooler climate on a budget with these cheap and easy DIY Greenhouse ideas.

There are full tutorials and plans for cold frames, a-frames, lean-to’s, hoop houses, miniature greenhouses, and much more. Many of these greenhouses use cheap building materials like pallets and repurposed materials like windows or doors that you can find at places like Habitat for Humanity or for free on the curb.

There are different size greenhouse projects to choose from, so whether you have tons of space or are looking for small greenhouse ideas, there are plenty of backyard greenhouse ideas for everyone. These DIY ideas will help you grow herbs, vegetables, tomatoes, and much more! You will find free plans and detailed instructions for these projects.

Mini DIY Greenhouse Ideas

mini window greenhouse

DIY Window Greenhouse from Liz Marie

Countertop Greenhouse

Countertop Greenhouse from Instructables

CD Case Greenhouse

CD Case Greenhouse from Mega Crafty

mini greenhouse with wood frames

How to Build Your Own Greenhouse (Mini Version) from Bepa’s Garden

Umbrella Greenhouse

Seedlings Starting with an Umbrella and Barrel Planter from Garden Therapy

Rotissere Chicken Container Mini Greenhouse

Rotisserie Chicken Container Mini Greenhouse from Homesteading Downsized

window mini greenhouse

Miniature Greenhouse from Old Windows from Global Garden Friends

mason jar mini greenhouse

Mason Jar Mini Greenhouse from Jennifer Rizzo


Mini-Greenhouse from Bepa’s Garden

little window house for plants

Mini Little Window House from Crafts a la Mode

Cold Frame Ideas

wood Cold Frame Using an Old Window

Cold Frame Using an Old Window from Savvy Gardening

DIY Cold Frame

DIY Cold Frame How-To from Three Dogs in a Garden

hay bale cold frame

Hay Bale Cold Frame from The Reid Homestead

amish cold frame

Amish Cold Frame from In My Kitchen Garden

hoop house cold frame

Hoop House Cold Frame from Gardenfork

cold frame with auto vent

Cold Frame with Auto Vent from Etsy

tomato tent cold frame

Tomato Cold Frame Tent Planter from Dunn Lumber

cold frame with window doors

Cold Frame with Window Doors from Instructables

Wooden Cold Frame

Wooden Cold Frame from Etsy

Quonset, Polytunnel & Hoop House Ideas

$25 Easy 5x5 Greenhouse

$25 Easy 5×5 Greenhouse from Instructables

$50 Hoop House

$50 Hoop House from The Door Garden

Row Cover Hoop House

Row Cover Hoop House from Bonnie Plants

Poly Tunnel

Small Poly Tunnel from One Hundred Dollars a Month

Covered Greenhouse

Covered Greenhouse from Swing N Cocoa

Super Cheap Hoop House for Winter

Super Cheap Hoop House for Winter from QT’s Random Ramblings

Trampoline Greenhouse

Trampoline Greenhouse from How She Does


$50 PolyTunnel from Sow and Dippity

hoop house

Hoop House from Southwestern Sunflower

Inexpensive Hoop-Style PVC Greenhouse Alberta Home Gardening


DIY Polytunnel from Gardening and Permaculture Design

hoop house

300 Square Foot Windproof Hoop House from Natural Living Ideas

cheap greenhouse

Simple and Inexpensive Greenhouse from Backwoods Home Magazine

hoop house

DIY Cheap Greenhouse from Youtube

DIY PVC Pipe Greenhouse

DIY PVC Pipes Greenhouse from Lady Lee’s Home

Greenhouse Kits on Amazon

Repurposed DIY Greenhouses

old window greenhouse

Old Windows Greenhouse from Garden Therapy

recycled materials greenhouse

Recycled Materials Greenhouse from Montana Wildlife Gardener

Plastic Bottle Greenhouse

Plastic Bottle Greenhouse from Den Garden

Big, Low-Cost Glass Greenhouse Using Free Windows

Big, Low-Cost Glass Greenhouse Using Free Windows from The Green Lever

old windows greenhouse

Old Windows Greenhouse from Instructables

old windows greenhouse

Old Windows Greenhouse (with polycarbonate panels for the roof and cedar shakes trim) from Pinterest

Small Window A-Frame Greenhouses from Norrfrid

greenhouse out of unfinished cedar, antique windows and our old front door

Antique Windows Greenhouse from Gardening in My Rubber Boots

carport greenhouse

Old Carport Garden Greenhouse from Instructables

upcycled greenhouse

Upcycled Greenhouse from A Small Life

Pallet Greenhouses

pallet tent garden

DIY Pallet Tent from Instructables

pallet urban greenhouse

Pallet Urban Greenhouse from 1001 Pallets

pallet wood greenhouse

Low-Cost Wood Pallet Greenhouse from The Green Lever

pallet racking greenhouse

Free Pallet Racking Greenhouse from Gardener’s Path

pallet cold frames

Pallet Cold Frames from Roots and Boots

pallet greenhouse

Pallet Greenhouse Garden Shed (source unknown)

Other DIY Greenhouses

Greenhouse Made from Old Windows

Greenhouse Made from Old Windows from Simply Country Life

greenhouse attached

Attached Greenhouse from Tom’s Garden

Lean-To Greenhouse Plans

Lean-To Greenhouse Plans from Etsy

simple everyday greenhouse made from wood and plastic sheeting

$150 Simple Greenhouse from Bepa’s Garden

greenhouse underground

Underground Greenhouse from SHTF Preparedness

DIY greenhouse

Basic Greenhouse with Polyethylene Sheeting from On the Farm

DIY greenhouse

Sturdy Greenhouse in Colorado from Weather Imagery

Lightweight Geodome DIY Greenhouse Plans

Lightweight Geodome DIY Greenhouse Plans from Northern Homesteaders

DIY Greenhouse Plans

Barn-Style Greenhouse Plans with Step-by-Step Instructions from Ana White

Fold Down Greenhouse

Fold-Down Greenhouse from Bonnie Plants

lean-to greenhouse

Lean-to Greenhouse from Fabullessly Frugal

greenhouse gardening with gutters

Greenhouse Gardening with Gutters from One Hundred Dollars A Month

lumber greenhouse

Lumber and Plastic Paneling Greenhouse from The Elliot Homestead

hog panel greenhouse

DIY Hog Panel Greenhouse from Flower Patch Farmhouse

greenhouse with Tuftex panels

Greenhouse with Tuftex Panels from YouTube

hobby greenhouse kit

Hobby Greenhouse from Homestead and Chill

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Looking for more garden ideas? Be sure to check out all our gardening posts, including container gardening ideas, landscaping, garden design, garden art, and much more!

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