Prefab greenhouses for sale

Prebuilt Greenhouses

Take your green thumb to the next level with a backyard greenhouse! Horizon Structures offers a wide variety of prefab greenhouses for sale online.

Are you new to gardening? Someone with a few growing seasons under your belt?  New or experienced, a backyard greenhouse allows you to take the your ‘green thumb’ to the next level.  And, with a Horizon Structures pre-built greenhouse it’s easy and relatively inexpensive to do!

A Prefabricated Greenhouse In The Backyard Allows You To…

Play Video

A PREBUILT Horizon Structures greenhouse allows you to get started immediately!  NOT a kit ~ NO ASSEMBLY required.

Choosing Right Prebuilt Greenhouse

Choosing the right backyard prefab greenhouse for sale is not a decision to take lightly. There are plenty of options available and many models to choose from.  Large big box stores sell greenhouses.  Greenhouse kits are also available online.  However, neither of these is necessarily the best choice in the long run. Here’s why…

A Horizon Structures prebuilt greenhouse is the right choice for a number of reasons.  First and foremost, the strength, weight, quality and durability of our raw materials ensure that a Horizon greenhouse stands up to harsh wind and weather throughout the seasons year after year after year.

Another advantage is that our Horizon Structures’ large prefab greenhouses for sale are NOT kits. We deliver them fully assembled and ready for immediate use.  You won’t waste time fumbling around putting our greenhouse together.  As soon as we get it off the truck, you can dig right in and start getting your hands dirty!  Let the planting begin!

A-Frame Greenhouse

The traditional A-frame design offers a neat and tidy space to conduct all your potting and planting with everything all in one place.

Lean-To Greenhouse

Frame your garden greenhouse in this modern take on the Lean-to Greenhouse. All the features you need for successful growing encapsulated in a neat and tidy package of Standard Features you’ll love.

Double Wide Greenhouse

When it’s time to grow the Double Wide greenhouse is the way to go. You simply won’t believe all the extra space the double wide delivers and how straightforward it is to literally grow your crop.

Greenhouse Shed/Combo

The ultimate in form and function, the combination greenhouse with attached shed offers the advantage of having everything you need for gardening all in one place.

Octagon Cedar Greenhouse

Unlike conventional rectangular greenhouses, our octagon-shaped structure not only enhances visual appeal but also maximizes sunlight exposure from various angles, promoting optimal plant growth.

Other benefits of polycarbonate…

Base / Frame / Foundation

As a general rule, greenhouses are relatively light compared to their size and may blow over or suffer wind damage if not properly anchored. We’re proud to say, there’s nothing lightweight or flimsy about Horizon Structures’ large greenhouses for sale. They’re heavy and sturdy incorporating a robust 4×4 pressure-treated wood foundation ‘frame’ that keeps the structure upright, square, and solidly in place.

This extra strong foundation – or base frame – securely holds the structure together AND enables you to easily anchor it firmly to the ground for increased peace of mind.

The pressure treated wood also reduces (or eliminates) damage from dampness in the ground and insect infestations.

Siding and Framing

Clear polycarbonate panels make up the roof and sides of the greenhouse.  They are neatly sandwiched between the interior wood framing and Azek exterior trim.

Azek is a multi-purpose construction material made of cellular PVC.  It is durable and long-lasting.  It does NOT require paint for protection but holds paint well should you decide you want something other than the standard white.

Azek never needs maintenance. And, unlike wood, it resists mold, mildew, stains, and scratches.  It’s splinter-free and comes with a 30-year manufacturer’s warranty.

The 8mm twin wall polycarbonate panels offer improved insulation for both hot and cold weather and are superior to fragile glass or plastic sometimes used in greenhouses.  In the unlikely event these durable panels need replacement, simply unscrew the (exterior Azek) trim and put in a new panel.


Horizon Structures Greenhouses -

A Gardener’s Delight

Beautifully Crafted From the Ground up

Our greenhouses for sale are beautifully crafted from the ground up by Amish carpenters and include a pressure treated, 4 x 4 Southern Yellow Pine (SYP) base that will stand the test of time. All that’s required is a level, well-drained area. A specially prepared site is not necessary unless you prefer that route.

The ‘floor’ of your greenhouse can be finished in a myriad of ways before or after delivery…

Upgrades make it even better!

Have us add a sturdy, built-in potting bench. Mounted a convenient 36” high.  Benches are attached to the wall creating a stable, wobble-free workspace.

Surface is a heavy-duty polypropylene panels.  Durable, smooth and non-porous.  Easy to clean – No splinters or rough edges – UV protective – high impact – abrasion resistant.  Securely screwed onto wooden bench frame so there’s no slipping or sliding around.  Square holes allow water, potting soil and debris to drain right through.

Holds everything from your delicate seedlings to bags of potting soil.  Will not dent or warp.

What A Difference A Greenhouse Makes

Hassle-free, quick, and efficient delivery provides an ‘instant’ gardening solution so you can get busy planting and growing right away. 

Hobby gardeners and Master Gardeners alike will be delighted by the benefits and possibilities of owning a Horizon Structures greenhouse and the ease with which this prefabricated structure transplants itself from our factory floor to your garden. 

Need help? Have questions regarding our greenhouses for sale? Count on our Customer Service team to guide you through the simple purchasing process and help you choose the right greenhouse for your needs. Don’t forget to ask us about financing!  Call Today:  888-447-4337