How To Anchor A Portable Greenhouse (Garden Advice)

A greenhouse is a great way to extend your growing season and protect delicate plants from harsh weather. 

A portable greenhouse allows you to move the structure, making it even more versatile than a permanent one. 

With the right anchor system, you can keep your portable greenhouse stable and safe while providing optimum support for your plants. 

Below are different types of anchors that will ensure your greenhouse stays put:

How to Protect your Greenhouse from the Wind – YouTube
Anchoring a portable greenhouse is essential for its stability and protection.
Proper anchoring techniques help prevent the greenhouse from being blown away or damaged by strong winds.
Ground anchors or stakes, concrete footings, and weighted base plates are common methods used for anchoring portable greenhouses.
Regular inspection and maintenance of the anchoring system is necessary to ensure ongoing stability.
Positioning the greenhouse in a sheltered location and considering local building codes are additional tips for successful greenhouse anchoring.

Using Tarp Clips

Tarp clips are a simple and inexpensive way to anchor your greenhouse. They come in a variety of sizes, but all have a hook on one side, which is used to attach the clip to a tarp or other fabric. 

You can also use tarp clips with plastic sheeting or vinyl (like that used for car windows).

The best part about using tarp clips is that they’re reusable you only have to buy them once! When you’re done using your greenhouse, simply remove the tarp and store it with your other gardening supplies until next year.

When it comes to anchoring a small greenhouse, you want to ensure stability and protection. Our comprehensive guide on anchoring a small greenhouse provides easy fix solutions and expert advice to keep your small greenhouse secure in various conditions.

Securing the Frame

Nail it down. Nailing is the traditional method of securing a greenhouse frame, and you can use either galvanized or stainless steel nails. 

If you’re using galvanized nails, they will rust over time, but they’ll still be secure and stable enough to support your plants all winter long.

Screw it down. Using screws is another option for anchoring your portable greenhouse frame; however, we recommend using them only if you plan to move the structure frequently (e.g., if you need to take it with you when traveling). 

Otherwise, the constant pressure exerted by screwing in and out of the wood can cause damage that may lead to cracking or warping over time

Metal Anchors

To secure the greenhouse frame to the ground, you need to use metal anchors. The size of these should be strong enough to hold the greenhouse frame in place.

Metal anchors can be purchased at any hardware store. They come in different sizes and shapes, so you will want to make sure that they are compatible with your greenhouse frame before purchasing them.

The best places for placing these anchors are at each of the corners where two pieces of wood join together (see image below).

Palram greenhouses offer durability and quality, but proper anchoring is essential for long-term stability. Learn how to anchor your Palram greenhouse effectively with our step-by-step instructions and helpful tips in our article on anchoring a Palram greenhouse.

Nails or Rope

You can anchor the greenhouse with nails, but it’s better to use rope. The rope should be at least 3/8″ thick and long enough to reach around the greenhouse, plus a few extra feet for securing. 

Tie knots in the rope every 18 inches or so; this will prevent it from slipping out of place as you tighten it around your structure. Tie bowline knots (see picture below) on each end of the line before connecting them together.

FunctionUsed for fastening and joining materials togetherProvides flexibility for securing and tying objects
MaterialTypically made of metal, such as steel or ironMade of various materials, including natural fibers or synthetic materials
ApplicationSuitable for fixed installations or permanent fasteningIdeal for temporary or adjustable connections
StrengthOffers strong and permanent holdProvides adjustable tension and flexibility
ExamplesCommon nails, finishing nailsNylon rope, polypropylene rope
AdvantagesSecure and stable fastening, permanent solutionVersatile and adjustable, temporary solution
DisadvantagesDifficult to remove without damage, may require additional toolsCan loosen over time, limited load-bearing capacity
UsageCommonly used in construction and woodworkingWidely used for camping, outdoor activities, and general tying purposes

Using Tension Rods to Secure the Frame

Once you have your frame assembled, use a tension rod to secure it to the base and make sure it’s level. (For a more detailed explanation of how to do this, see the section below on How To Anchor A Portable Greenhouse.)

To attach the tension rod, use either a rope or chain. Try not to use plastic-coated ones; these can melt when exposed to heat. 

Remember that this will be under pressure from being tied down by the rope; hence why you need to use something strong enough to handle it. 

Once attached, raise or lower your greenhouse by pulling on one end of the tension rod until it’s at an appropriate height for whatever plants are in there.

If needed, add ratchet straps around any part of your greenhouse frame that might wobble out of place (like along its edges). 

These will hold everything firmly together while still allowing room for expansion as necessary over time.”


To anchor your greenhouse, you need to use a heavy weight. This can be a concrete block or a heavy rock. Make sure the weight is not too heavy as this may cause the greenhouse to fall over. 

Also make sure the weight is not too light as this will not provide enough support for the greenhouse structure and it may fall over due to strong winds, or even just from being moved by your cat mischievously! 

If you live in an area where it’s common for tornadoes to occur and destroy everything in their path, then you’ll want something that can withstand strong winds but if all you’re concerned about are gusts from passing cars on nearby roads (which is more likely), then perhaps something lighter would suffice? 

In general, though, try not to skimp on materials used for anchoring purposes; they’ll probably save your life someday when someone tries stealing from you but ends up breaking through walls instead because everything around them was too flimsy (and probably made out of cheap plastic).

Do you have a concrete surface and need to anchor your greenhouse securely? Discover the best methods and techniques in our informative guide on anchoring a greenhouse on concrete. From selecting the right anchors to ensuring a solid foundation, we’ve got you covered.

Stakes and Guy Ropes

Next, you’ll want to anchor the greenhouse with stakes and guy ropes. You can use your own clothesline-style rope for this purpose, but if you don’t already have some lying around, it’s always best to invest in a good set of quality ropes. 

It’s worth noting that one of the most important things you can do when setting up a portable greenhouse is made sure your stakes are well-anchored into the ground! 

This will ensure that they stay sturdy as you work inside or outside of your new greenhouse space. 

Finally, when anchoring any structure like this one (especially if you’re placing it near trees), be sure that there aren’t any branches or other obstructions nearby you don’t want rainwater pooling up on top because of runoff channels created by weakly anchored structures!

If you decide not to purchase an existing tarp/material for protection against damage caused by windstorms or heavy rains then consider using some other form of protection such as plywood sheets placed over each side of the frame before anchoring stakes into the ground so that no water will leak through cracks created between panels during storms.

StakesGuy Ropes
FunctionProvides vertical support and stabilityOffers lateral support and tension
MaterialTypically made of metal or durable plasticMade of strong nylon or polyester
ApplicationAnchors the structure to the groundProvides additional support in windy conditions
InstallationInserted into the ground at anchor pointsAttached to anchor points on the structure and secured to the ground
StrengthOffers stability against vertical forcesProvides resistance against lateral forces
VersatilitySuitable for various types of structures and terrainsEffective for larger or more flexible structures
ExamplesTent stakes, ground anchorsGuy lines, tent ropes
AdvantagesSimple installation, effective in most conditionsIncreased stability in windy conditions, adjustable tension
DisadvantagesLimited lateral support, may require solid ground for effective anchoringAdditional setup and adjustment may be required


You can use sandbags to anchor your portable greenhouse. Sandbags are heavy and will keep the greenhouse from moving around in the wind, but they also require a lot of effort to move if you need to relocate the greenhouse. 

To fill a sandbag for anchoring purposes, you will need about 60 pounds of material (sand or dirt). These materials should be spread evenly throughout the bag and packed down tightly before tying it off with rope or twine.

Once filled with material, place each bag on top of each other until they reach a ground level where they will rest against a wall or foundation that won’t move out from under them when pulled by large amounts of force created by extreme weather conditions such as hurricanes and tornadoes (learn more here). 

If this isn’t possible then consider placing them around columns at least 18 inches apart so that no one gets hurt when one breaks free during high winds – though this isn’t recommended since it makes removing them later much harder!

These steps ensure safe attachment points which prevent movement while maintaining structural integrity during strong gusts; however, some people have reported issues with erosion caused by rainwater draining into these areas over time due to improper drainage design choices made during the installation phase which could lead into problems down the road…

Anchoring a plastic greenhouse is crucial to protect it from strong winds and other external factors. Our easy-to-follow guide on anchoring a plastic greenhouse provides effective solutions and tips to keep your plastic greenhouse safe and stable throughout the year.

Anchor Bags

To anchor a greenhouse, you’ll need to use some sort of heavy bag. Anchor bags are filled with sand, gravel or other material and can be used in any weather conditions to secure the greenhouse to the ground. 

These bags are reusable and are often thicker than standard bags that people use to haul their groceries home; they’re also heavier because of their contents.

It’s best if you can find an anchor bag made specifically for your model of the greenhouse you want something sturdy enough to hold down your structure. 

If this isn’t possible or too expensive, then there are plenty of other options available at hardware stores and garden centers throughout your area:

Sandbags have been used for years as temporary barriers against flooding and erosion during natural disasters such as hurricanes (and even tsunamis!). 

They’re cheap but effective—and they’re readily available at most hardware stores! Just don’t forget how heavy they can be when full; one person might struggle with carrying four or five full sandbags indoors…

Small Screws and Ties

Tie the greenhouse to the stakes using small screws. If your portable greenhouse has a roof, hammer two small screws into the base of each of its legs, making sure that they go through both sides of the leg and into the ground. 

If your portable greenhouse doesn’t have a roof, then screw one large screw into each leg at an angle so that they will secure themselves in place as you pound them with a mallet or hammer. 

These screws should be long enough to penetrate both sides of each leg and go deep enough into the ground so they’ll hold up against strong winds and heavy snow loads on top of it.

Small ScrewsTies
SizeSmall and compactVariable sizes available
MaterialTypically made of metalMade of durable materials such as nylon or plastic
FunctionUsed for securing lightweight objectsUsed for bundling or tying objects together
StrengthProvides a secure hold in solid surfacesOffers adjustable tension and flexibility
ApplicationSuitable for attaching small parts or fastening lightweight materialsIdeal for bundling cables, organizing wires, or securing objects
ExamplesPhillips head screws, self-tapping screwsCable ties, zip ties
AdvantagesFirm grip in solid materials, reusable with proper removalQuick and easy application, adjustable and versatile
DisadvantagesMay require drilling pilot holes, not suitable for heavy-duty applicationsSingle-use, may require cutting for removal

Fabric Straps with D-Rings or Plastic Rings

D-rings and plastic rings are both excellent for anchoring. The main difference is that D-rings can be attached to the greenhouse frame by simply screwing them into pre-drilled holes, while plastic rings need to be welded on.

 Both types of anchors can be used with either type of strap (we recommend nylon webbing straps), though we prefer nylon webbing straps with plastic rings because they’re easier to install and can’t accidentally come off if your greenhouse ever tips over.

We generally don’t recommend using D-rings for attaching your greenhouse to anchors that are buried in the ground

This is because if an earthquake happens, the force could potentially bend or break the wood around these screws, making it difficult or impossible for you to remove them without drilling out new holes first. 

For this reason, we prefer using steel bolts instead when anchoring a portable greenhouse in areas where earthquakes are likely to occur regularly (for example California).

Securing your greenhouse to the ground is vital for stability and longevity. Our article on anchoring a greenhouse to the ground offers easy fix techniques and recommendations to ensure your greenhouse remains firmly anchored, even in challenging weather conditions.

Threaded Rods and Steel Plates

You can use threaded rods to anchor your portable greenhouse. You’ll find them at any hardware store, and they come in a variety of sizes. 

A threaded rod is most commonly used to secure steel plates to the ground, but it can be used in any situation where you want to secure something in place with bolts.

There are several different ways you can use threaded rods and steel plates together:

Use a drill (or air hammer) to secure the rod into the ground. Once this is done, attach a nut onto each side of your greenhouse frame so it will stay attached when you set up your greenhouse and later take it down again. 

This method is not recommended if you plan on moving your greenhouse frequently because it’s difficult to remove when needed!

Use one or more nuts with or without bolts on both sides of your greenhouse frame, depending on how sturdy you need it to be! 

This method will allow for quick installation/removal time for those who don’t want their greenhouses taking up too much space indoors during inclement weather conditions such as rain showers or snowfall days off school! 

It also works well if there are small children around because we all know how curious kids’ minds really do tend towards mischief sometimes!”


Hopefully, the information in this article has helped you to understand how to anchor a portable greenhouse. 

There are many different types of anchors available, and it’s important for you to choose the one that works best for your situation. 

If you have any questions about any of these methods or want some more advice on which would be best suited for your needs then please feel free to contact us at any time!

Further Reading

Ways to Anchor a Greenhouse: Explore different methods and techniques to anchor your greenhouse effectively. Learn about the importance of anchoring and discover practical solutions to keep your greenhouse secure.

How to Keep a Greenhouse from Blowing Away: Discover tips and strategies to prevent your greenhouse from being damaged or blown away during strong winds or storms. Find out how to ensure the stability and longevity of your greenhouse.

Anchoring a Portable Greenhouse: Portable greenhouses require proper anchoring to withstand external forces. This resource provides valuable insights and guidance on anchoring techniques specifically for portable greenhouses.

Now, let’s move on to the FAQs section:


How important is greenhouse anchoring?

Greenhouse anchoring is crucial as it provides stability and protection against wind, storms, and other external factors. Proper anchoring ensures the safety of the structure, prevents damage, and helps maintain the optimal growing environment.

What are some common greenhouse anchoring methods?

Common greenhouse anchoring methods include using ground anchors or stakes, securing with concrete footings, using weighted base plates, or utilizing tension systems with ropes or cables. The choice of method depends on factors such as greenhouse size, location, and environmental conditions.

Can I use the same anchoring techniques for all types of greenhouses?

Anchoring techniques may vary depending on the type of greenhouse and its specific design. Factors such as material, size, and intended use can influence the appropriate anchoring methods. It’s important to consider the manufacturer’s recommendations and follow guidelines specific to your greenhouse type.

How often should I check and re-anchor my greenhouse?

Regular inspection and maintenance are essential to ensure the ongoing stability of your greenhouse. It is recommended to check the anchoring system at least once a year and after severe weather events. If any signs of instability or damage are detected, re-anchoring should be done promptly.

Are there any additional tips for greenhouse anchoring?

In addition to proper anchoring techniques, it is advisable to position the greenhouse in a sheltered location, away from strong winds or potential hazards. Regularly trimming nearby trees or vegetation can also minimize the risk of damage. Additionally, considering local building codes and regulations can help ensure compliance and safety.