How To Anchor A Plastic Greenhouse (Easy Fix)

So you’re ready to get some plants in your greenhouse. That’s great! Growing plants indoors is a great way to enjoy the outdoors even when it’s cold outside. 

But did you know that not all greenhouses need anchors? You can anchor a plastic greenhouse by drilling holes into the ground, or by using stakes or screws directly into concrete. 

The best way to tell if your greenhouse needs anchoring depends on its location and surroundings:

How To Attach Greenhouse Plastic | Batten Tape Testing
Proper anchoring is essential for a plastic greenhouse’s stability.
There are various methods for anchoring a plastic greenhouse, such as using ground anchors or stakes, securing it to a concrete foundation, or attaching it to a metal frame.
Anchoring prevents damage or collapse during strong winds and adverse weather conditions.
Regular inspection and maintenance of the anchoring system are important for long-term stability.
Following a step-by-step guide can help ensure an easy and successful anchoring process.

Wire Pins

Wire pins are used to anchor cable ties in place, or even the plastic greenhouse itself. They have a sharp point that can be hammered into the ground and are ideal for anchoring cables down.

If you own a Palram greenhouse, it’s essential to ensure proper anchoring for stability. Our comprehensive guide on how to anchor a Palram greenhouse provides step-by-step instructions and valuable tips to keep your greenhouse secure and protected.

Steel Stakes

Steel stakes are ideal for anchoring a plastic greenhouse. They’re made of steel and have sharp points on the end so they can easily be driven into the ground, anchoring your greenhouse. 

The stake is available in many different lengths and diameters as well.

If you’re purchasing a metal stake, make sure that it’s galvanized or coated with another non-rusting metal to prevent it from rusting over time.

MaterialHigh-quality steel for strength and durability.
LengthVarious lengths available for different applications.
DiameterDifferent diameters to suit various stake requirements.
ShapeOptions include round, flat, or angled stakes.
CoatingSome stakes may feature a corrosion-resistant coating.

Greenhouse Kits

There are many different greenhouse kits available to buy from most garden centres, and for good reason. 

They’re easy to assemble, good value for money, and come in different sizes to suit your needs. The materials used are high quality too you can expect years of service from a well-made kit.

Sod Staples

Sod staples are a good choice if you want to anchor your greenhouse to grass or soil. The staples are placed at the top of the greenhouse, and they anchor it into the ground through the sod. 

This is especially helpful when placing a greenhouse over or near existing sod, as it will protect that grass from damage while still providing strong support for the structure.

When it comes to anchoring a small greenhouse, it’s crucial to find effective solutions that are also easy to implement. Explore our article on anchoring a small greenhouse for practical methods and expert advice on ensuring the stability of your compact gardening space.

Decking Screws

You can use decking screws to anchor your greenhouse. Decking screws are long and strong, which makes them great for anchoring your greenhouse down into the ground. They come in different lengths, so you can choose the one that suits your needs best.

MaterialHigh-quality and corrosion-resistant materials.
SizeVarious sizes available for different decking projects.
Thread TypeCoarse or fine thread options for specific applications.
Head TypeChoose from different head types for desired aesthetics and functionality.
FeaturesSome screws may have self-drilling tips or anti-corrosion coatings.

Ground Anchors

Ground anchors are a good option if you’re looking for a secure installation, as they can be installed in any weather condition and are more permanent than other types of anchors. 

However, ground anchors are more expensive than the other methods on this list. If you have the budget and need the security that comes with it, ground anchors may be your best bet.

Galvanised U-shaped Anchors

Galvanised U-shaped anchors are a good choice for attaching plastic greenhouses to the ground. They’re easy to install, remove and modify, and provide a secure anchor point for your structure.

Galvanised U-shaped anchors have one long leg of steel with two pointed ends that pierce the ground before spreading out on either side of the base material. 

A screw is provided with each anchor so you can easily install it into your chosen location in the ground by turning it through its own shaft until it is flush against the grass surface or other terrain material like soil/clay/sand etc..

Anchoring a greenhouse to the ground is vital for withstanding strong winds and adverse weather conditions. Discover our recommended techniques and an easy fix approach in our detailed guide on anchoring a greenhouse to the ground, ensuring your plastic greenhouse stays securely in place.

Ground Pegs

A ground peg is a good option because it’s easy to install and inexpensive. You can also easily remove them if you need to move your greenhouse at any point, which is why they’re a popular choice for gardeners who are renting or don’t want to make too many permanent changes to their property. 

Ground pegs come in a variety of sizes and materials and can be used with most types of greenhouses, so they’re an excellent option if you want something inexpensive but still durable.

MaterialDurable and weather-resistant materials for long-lasting use.
LengthDifferent lengths available for various anchoring needs.
DesignVarious designs for secure and stable ground penetration.
VersatilitySuitable for anchoring various structures and objects.
Easy InstallationQuick and hassle-free installation process.

Cable Ties

You can use cable ties to anchor a plastic greenhouse. These are made of plastic, metal or nylon and are used to bundle up cables, such as those that move electricity from a power source to your house. 

They’re also used to secure things together (like cables), and they can be used to secure things in place on the ground or in trees. They’re often sold in bulk packs, so you’ll have plenty of them if you need them for other projects!

Do you want to ensure your greenhouse is firmly anchored and protected? Learn essential tips and techniques in our informative article on anchoring your greenhouse. Find out how proper anchoring contributes to the longevity and stability of your greenhouse structure.

Peg Down The Corners First

Use a hammer and nail to secure one corner in place, then use a spirit level to check that it is straight, if not adjust and peg down again until you have all 4 corners secured.

Next, use your mallet to drive the pegs into the ground by striking them with the head of your mallet (or something similar).

Check Your Playground Surfacing

  • Check Your Playground Surfacing
  • Check for any sharp objects like broken glass, nails or pieces of metal.
  • Check for any loose objects that can fall on you.
  • Make sure there are no holes or cracks in the surface where you will be working.

When it comes to anchoring a polycarbonate greenhouse, a reliable and easy fix solution is key. Our comprehensive guide on anchoring a polycarbonate greenhouse provides step-by-step instructions and valuable insights to ensure the safety and stability of your greenhouse investment.


As you can see, there are a number of different ways to anchor your greenhouse. This is just a sampling of what’s available on the market today. 

As with all things, it’s best to do some research before making any decisions about how you want yours secured.

Further Reading

Here are some additional resources for further reading on related topics:

Best Way to Install Plastic to Greenhouse: Discover the best techniques and methods for properly installing plastic to your greenhouse. Learn about the importance of a secure installation to ensure optimal growing conditions and greenhouse longevity.

How to Keep a Greenhouse from Blowing Away: Explore effective strategies and tips for preventing your greenhouse from being damaged or blown away during strong winds and storms. Discover the importance of proper anchoring and maintenance for a secure greenhouse structure.

4 Ways to Attach Greenhouse Plastic to a Metal Frame: Do It Right the First Time: Learn about different methods to attach greenhouse plastic to a metal frame. This article provides step-by-step instructions and valuable insights on ensuring a secure and durable attachment, avoiding common pitfalls and mistakes.


Here are some frequently asked questions about anchoring plastic greenhouses and their answers:

How important is it to anchor a plastic greenhouse?

Anchoring a plastic greenhouse is crucial for its stability and protection. Proper anchoring ensures that the structure can withstand strong winds and adverse weather conditions, preventing damage or even collapse.

What are some common methods for anchoring a plastic greenhouse?

Common methods for anchoring a plastic greenhouse include using ground anchors or stakes, securing the structure to a concrete foundation, or attaching it to a metal frame. Each method has its advantages, and the choice depends on factors such as the greenhouse size, location, and local weather conditions.

How can I prevent my plastic greenhouse from blowing away in strong winds?

To prevent a plastic greenhouse from blowing away in strong winds, make sure it is properly anchored to the ground or a solid foundation. Use appropriate anchoring techniques, such as ground anchors, weighted ballasts, or securing the structure to a sturdy frame.

Are there any specific considerations for anchoring a plastic greenhouse on a sloped surface?

Anchoring a plastic greenhouse on a sloped surface requires additional planning and precautions. It’s essential to ensure a level foundation and adjust the anchoring methods accordingly to maintain stability and prevent structural stress.

How often should I check and maintain the anchoring of my plastic greenhouse?

Regularly inspect the anchoring of your plastic greenhouse, especially after severe weather events. Check for any signs of loosening, damage, or wear and make necessary adjustments or repairs promptly. It’s recommended to perform routine maintenance at least once a year to ensure the integrity of the anchoring system.