Best Greenhouses for Maine – Top 9 Options

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Best Greenhouses for Maine

Gardening can be a relaxing and gratifying hobby. Depending on what you choose to grow, you may even sell some of your gardens for extra income, or you might grow your own food.

Whatever the reason you garden, we think everyone should partake in it. Some settings aren’t conducive to gardening for certain parts of the year.

Maine is one of those places. With harsh winters overall and powerful storms in the south, gardening there year-round can seem impossible.

But we’ve found some of the best greenhouses for Maine. With the greenhouses on this list, you can vastly extend your growing season.

Quick Summary

Product Name Grade
Exaco Royal Victorian Greenhouse A+
NW Green Panels Large Walk-In Greenhouse A+
Exaco Trading Company Cathedral Victorian Greenhouse A
Outdoor Living Today Cedar Greenhouse A+
Little Cottage Company Greenhouse A+
Mt. Hood Greenhouse A+
Colonial Gable Hobby Greenhouse B+
Palram Hybrid Greenhouse A
Riga Greenhouse A+
Palram Mythos Greenhouse A

Best Greenhouses for Maine

Exaco Royal Victorian Greenhouse

Exaco Royal Victorian VI34 150 Square Foot Greenhouse

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Here is another greenhouse that’s bound to bring you tons of compliments. It’s designed to mimic Victorian architecture, with spikes on its ridge.

There’s a lot to love aside from its regal looks, though. One thing that sets it apart from the rest is its integrated misting system. All you need to do is use a hose to connect it to a faucet, and you’ve got a greenhouse that will keep your plants cool and moisturized.

At the top, you’ll find roof vents. These are equipped with an automatic spindle system, so they’ll slide open on their own when the temperatures get too hot. You won’t need to rush outside to help cool down your greenhouse.


  • It has a misting system built into it.
  • The roof vents are entirely automatic, opening and closing on their own.
  • Beautiful Victorian design.
  • The windows are cradled by tough seals, which help to insulate the greenhouse from external temperatures.


  • None reported yet.

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NW Green Panels Large Walk-In Greenhouse

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If you’re searching for a greenhouse that can turn any yard into a rustic cabin paradise, this is the one for you. Made from incense cedar, it has a country-style look that lovers of the outdoors will adore.

Its rigid construction makes it a perfect pick for those in extreme environments. Rain, snow, shine, or winds, this greenhouse will stand through it all. The panels you see on its exterior are shatter-proof and 8 mm thick.

On the roof, there’s a heat-activated vent. That means it will open on its own when temperatures rise, airing out your greenhouse automatically.


  • Unique cabin appeal.
  • It is made with shatter-proof and thick polycarbonate panels.
  • Each one is entirely made by hand and stained by hand.
  • The vent on top is entirely automatic.


  • None reported yet.

Exaco Trading Company Cathedral Victorian Greenhouse

Exaco Cathedral Victorian Greenhouse with Large Cupola, Green

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We couldn’t resist adding this greenhouse to the list. This one expands upon the striking Victorian theme, living up to its cathedral name. We would love to have this one in our yard.

Its double doors make both a grand and comfortable entrance. If you’re planning to move something large into it, such as furniture, then you’ll have plenty of room.

On the very top, there are four vents with spindle openers. To increase the stability of the structure, it has sturdy aluminum supports.

Install this beauty in your yard, and you won’t be able to stop taking pictures of it.


  • Incredible visual appeal.
  • It has four roof vents with spindle openers.
  • Double doors make it easy to enter and exit the greenhouse.
  • Tempered glass windows are durable enough to endure the outdoor elements.
  • Aluminum supports make the extra building stable.


  • It can be expensive.

Outdoor Living Today Cedar Greenhouse

8'x12' Cedar Greenhouse

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The Outdoor Living Today Cedar Greenhouse is an embodiment of the countryside. Made from beautiful cedar, it resembles a miniature log cabin out by a lake.

There are two automatic vents on top of the roof. This saves you the trouble of having to run outside and open or close the vents every time the temperature rises and falls.


  • It has a countryside appeal.
  • Have built-in shelving on the side walls.
  • They are built with two automatic roof vents, which will open and close independently.


  • No reported issues at this point.

Little Cottage Company Greenhouse

8 Ft. W 8 Ft D Greenhouse


We’re starting with one of the strongest contenders on the list. This Little Cottage Company Greenhouse is both adorable and highly functional.

Not only will it grace any yard, but it will do so for a long time. It’s built to last, with the ability to endure 90 mph winds.

During those humid Maine summers, your plants will love the air circulation that this greenhouse can generate. Its windows can be opened to generate a cross-breeze, perfect for cooling your garden down when it’s too hot inside.


  • Durable.
  • The windows can be opened for some air circulation.
  • Attractive design.
  • It has a shelf built around the inside.
  • There’s a rod built in that you can use to hang baskets or gardening supplies.


  • It does not include paint.

Also Read: Do Greenhouses Need Airflow?

Mt. Hood Greenhouse

Mt. Hood Greenhouse


This greenhouse is a staple on any list of greenhouses for extreme environments. It may look unassuming at first, but trust us when we say it can stand up to just about any test.

Its impressive redwood frame allows it to be tough out windstorms up to 100 mph in strength. Underneath it, an organic plastic base resists pests and mildew alike. For that reason, this greenhouse is one you can expect to stay in place for years once you’ve got it set up.

Even the design of the panels is useful. The slanted panels on the roof allow the sunlight to enter the greenhouse even during the winter when the sun is hanging low in the sky.

We also can’t help but love how environmentally friendly the design is. Aside from its frame, made from natural redwood, the base is made from recycled plastic.


  • It is made from environmentally friendly natural or recycled materials.
  • Can endure winds up to 100 mph.
  • Efficiently captures sunlight all year long.
  • The polycarbonate panels are practically unbreakable.
  • Has vents built into the roof and back wall.


  • Some customers felt that the assembly instructions weren’t very clear.

Related Article: Do Greenhouses Get too Hot in the winter?

Colonial Gable Hobby Greenhouse

Colonial Gable Greenhouse


If you’ve ever wanted a greenhouse in which you could practically live, the Colonial Gable Hobby Greenhouse is a solid pick. Like the name, it resembles a small-scale Colonial home, which makes it an elegant addition to any property.

But beyond its alluring looks, it’s one tough little structure. Its high wind rating of 95 mph means it can stand firmly against most storms, regardless of severity.

And if you’re worried that it looks complicated to construct, you don’t need to be. The panels come pre-cut for you, so there’s no need to bring out a saw.


  • Attractive cottage aesthetic.
  • The polycarbonate panels on the roof will not be yellow with age.
  • It includes an integrated shelf and rods for hanging baskets and containers.
  • Can resist winds up to 95 mph.
  • The windows can be opened for ventilation.


  • It does not come with any paint, so if you want it to be a certain color, you’ll need to buy it separately.

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Palram Hybrid Greenhouse

Hybrid Greenhouse


Efficiency might as well be the name of the Palram Hybrid Greenhouse. It has many features that make it poised to become any gardener’s best friend.

One thing we like, for example, is the exterior rain gutters. They’re especially useful in states with droughts because they permit gardeners to store rainwater to use at a later time. Maine may not be prone to droughts, but there’s no reason you couldn’t take advantage of the rainwater as a free resource, too.

Plus, the panels are made from twin-walled polycarbonate. Their increased thickness insulates the temperature in your greenhouse even better and ensures they’re more durable.


  • Exterior rain gutters turn rain into a free source of water for you.
  • Twin-walled panels diffuse the sunlight efficiently and boost stability in the temperature.
  • The roof blocks up to 99.9% of UV rays, protecting your plants from being burnt.
  • Its aluminum frame is resistant to rusting.
  • A galvanized steel base holds the greenhouse firmly in place.
  • The vent in the roof helps you control the temperature.


  • Setting it up can take several hours.

Riga Greenhouse

Riga Greenhouse


The Riga Greenhouse appears in quite a few of our articles. This is one option that we know we could trust – and you could, too.

Its rounded shape makes it ideal for extreme environments. Snow can’t build up on the roof, and wind can flow over it without knocking it over. To be exact, it can handle winds up to 80 mph and hold up to 180 pounds of snow if any accumulates on it.

One thing we really love about it, though, is how its assembly is fuss-free. You won’t need any extra tools to put it together.


  • Hassle-free assembly.
  • The vents on top open and close automatically.
  • Has shelving built-in already, which can hold your planters or gardening supplies.
  • Sturdy rounded shape.
  • You can lock the door once you’re finished.


  • None reported yet.

Palram Mythos Greenhouse

Palram Mythos Greenhouse


Palram makes another splash on this list with its fantastic Mythos Greenhouse. This is a wonderful choice for beginner gardeners.

The panels slide into the frame, which simplifies assembly. It includes a steel base kit, which helps keep your greenhouse intact, even in volatile weather.

Plus, a vent in the roof allows you the power to tweak the temperature naturally. Just open the vent whenever you’re worried about the heat inside.


  • The panels simply slide into the frame.
  • Good ventilation.
  • Its polycarbonate panels are excellent for diffusing sunlight.
  • Includes a steel base to promote stability and permanence.


  • A few owners reported difficulty with assembly.

What to Consider When Buying a Greenhouse for Maine

Roof Weight Capacity

In Maine, the winters can be tough, with large snowfall. Unless your greenhouse has a rounded shape that naturally lets snow slide right off, you might want to think about how much snow the roof of your greenhouse can hold.

Usually, this information is included in the specifications or descriptions for each greenhouse. If you can’t find it there, we suggest checking out customer reviews. You can get an idea of which environments the greenhouse has thrived in through these comments.


Because seasons in Maine can vary so much, a greenhouse that can preserve ideal temperatures is a must. Sufficient insulation will be one of the easiest ways to achieve this goal. It doesn’t require any effort on your part – it’s just incorporated in the very construction of the greenhouse.

Thick panels are one great way to insulate. Because they’re not as thin, cold air can’t leak in easily, and they’re also more resistant to cracking.

But some greenhouses take it a step further, sealing up the edges of their windows and doors. If you can find a greenhouse-like one, it’s a fantastic pick. However, if your greenhouse isn’t sealed up, you can always do this yourself by putting tape around any cracks and windows.

Air Ventilation and Circulation

Have you ever noticed how stuffy a house can get during the hot summer when all the windows are closed? The exact same thing happens in your greenhouse. This level of heat and stuffiness is no good for your garden.

That’s why your greenhouse needs to have ventilation. It’s extra important in a state like Maine, which can get humid during the summer. Although necessary for many plants to grow healthily, Humidity can also lead to rot, mold, and mildew.

Look for greenhouses with vents built-in. If you want something as easy as possible, you can refine your search further by looking specifically for greenhouses with automatic vents. Automatic vents will open on their own when it gets hot inside.

It’s even better if you can find a greenhouse with openable windows, too. That way, you can get more air flowing inside.

Light Diffusion

This is probably one of the most important aspects of any greenhouse. Diffusion refers to how well it disperses light to your plants.

Usually, this is affected by the material of the greenhouse’s panels. The two most common materials are polycarbonate and glass. Both types are excellent for diffusing sunlight, but the glass on its own can be fragile unless it’s tempered or safety glass.

Extra Features

A greenhouse can be as basic or sophisticated as you want it to be. There are plenty of additional and optional features to look out for if they interest you.

An example is built-in shelving. Not all greenhouses have it, but it can save you a little extra trouble when they do have it. It means you can instantly store containers and hanging baskets.

Most greenhouses have vents, but not all of them are automatic. As we mentioned previously, Automatic vents can save you time and trouble because you won’t need to run outside and open them up every time it gets hot out.

Some greenhouses even have integrated watering or misting systems. With a little bit of setting up, these systems will make it easy for you to water your plants.

Wrap Up

Hopefully, you’ve learned a lot about greenhouse gardening in this guide. Our goal is to show everyone that gardeners from all states can garden all year with the correct equipment, including a solid greenhouse.

If you asked us which one we’d pick as our favorite on this list, we’d go with the NW Green Panels Large Walk-In Greenhouse. We think the cabin aesthetic makes it perfect for Maine, and customers have reported it performing wonderfully in snowstorms.

Furthermore, its handmade appeal is irresistible. This is inarguably a greenhouse that has the potential to be any gardener’s pride and joy.

Want to learn more about gardening in the winter? Check out our guide to the best greenhouses for winter growing.