
There are several methods for attaching plastic signs to trees. The most common approach is to use nails, such as roofing nails, aluminium nails, or galvanized nails. It is important to leave a gap between the nail head and the sign to account for tree growth and prevent the sign from being torn or engulfed by the tree. Some people also use screws, such as drywall screws or deck screws, but these may be less effective as trees grow radially and can pop off the sign. Other methods include stapling the signs, using elastic to tie the signs to the tree, or attaching the signs to a mounting plate first and then screwing the plate to the tree.
| Characteristics | Values |
|---|---|
| Sign material | Plastic, aluminium, vinyl, tyvek, plywood |
| Sign type | Trail signs, no trespassing signs, intersection markers |
| Fasteners | Nails, Screws, Staples, Bolts, Washers, Wire fence |
| Nail type | Roofing nails, aluminium nails, galvanized nails, copper nails, drywall nails, deck nails |
| Screw type | Drywall screws, deck screws |
| Bolt type | Lag bolts, galvanized bolts |
| Fastener placement | Nails should be left hanging out 1/2 to 3/4 of an inch, screws should be left with about an inch showing |
| Other methods | Painting signs directly on trees, using an elastic cord to tie signs to trees, attaching signs to a mounting plate screwed into the tree |
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What You'll Learn

Using nails
When attaching plastic signs to trees using nails, there are several methods that can be employed to ensure the sign remains secure while also accounting for the growth of the tree.
One common method is to use roofing nails, which are specifically designed to penetrate the bark and provide a secure hold. It is important to leave a gap between the nail head and the sign, typically around half an inch, to allow for tree growth. This prevents the tree from growing around the nail head and buckling or cracking the plastic sign. The sign should be able to slide along the nail as the tree grows, ensuring its longevity.
To further enhance the security of the sign, folding the corners of the plastic sign before nailing can provide additional strength. Using long nails, such as 1 1/2-inch aluminum siding nails, and placing four nails per sign is recommended. Additionally, nails with plastic washers can provide a stronger hold and make it more difficult for the sign to be ripped off.
When considering nail material, aluminum nails are generally preferred over steel nails as they are considered more logger-friendly and are less likely to damage the tree. However, it is important to note that nails can still pose a risk of infection or damage to certain tree species. For this reason, some sources suggest using screws instead of nails, as they provide a stronger hold and are less likely to come loose as the tree grows or flexes in the wind.
Another method to attach plastic signs to trees is to use a mounting plate. A small piece of pressure-treated wood can be screwed into the tree, and then the signs can be attached to this mounting plate. This provides a more secure base for the signs and can help extend their lifespan.
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Using screws
When attaching plastic signs to trees, it is important to consider the growth of the tree. If a nail or screw is firmly embedded in the wood, the tree will eventually grow around it. This can cause the sign to buckle and crack.
One way to avoid this is to use a mounting plate. First, screw a small piece of treated wood to the tree. You can then attach the plastic sign to this mounting plate. This method is more secure than attaching the sign directly to the tree and allows for tree growth.
When using screws, it is recommended to use deck screws, which are available in different materials such as stainless steel and galvanized. The length and diameter of the screws will depend on the size of the sign and the type of tree. For example, a 3" stainless deck screw with a star head is suitable for larger signs. It is important to note that screws should not be used if they are larger than the holes in the sign, as this will prevent the sign from sliding and accommodating tree growth.
When attaching the plastic sign, it is important to leave some space between the screw head and the sign. This can be achieved by not screwing it in all the way, leaving about a 1/2 inch gap. This allows the sign to move along with the growth of the tree, preventing damage.
Additionally, consider the growth rate of the tree. Different tree species have varying growth rates, and this will impact the attachment method and frequency of maintenance. For example, Aspen trees grow rapidly in certain climates, while subalpine firs are slow-growing.
By following these instructions and considering the tree's growth, you can effectively attach plastic signs to trees using screws and a mounting plate, ensuring the longevity of both the tree and the sign.
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Using staples
When stapling, it is important to use enough staples to secure the edges of the sign so that the wind does not get behind the sign and tear it loose. One user recommends stapling the sign to plywood, which is then screwed to the tree. This makes the sign more secure and also easier to replace.
If you are stapling directly into a tree, be aware that the tree's natural growth will stretch the material, which can cause the sign to become loose. This method may not be suitable for all types of plastic signs, as the staples can tear through the material. To avoid this, you can use a "stinger stapler", which puts a plastic washer under each staple.
If you are stapling a sign to lumber, such as plywood, you can also use screws or two-way tape to attach the sign.
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Painting signs on trees
Prepare the Tree Surface:
Before painting, ensure the tree surface is clean and free of debris or moisture. If necessary, use a mild detergent and water to clean the area where you will be painting. Allow the surface to dry completely before beginning the painting process.
Choose the Right Paint:
Select a paint that is specifically designed for outdoor use and will withstand varying weather conditions. Look for paint that is durable, fade-resistant, and preferably weatherproof. Bright and fluorescent colours like blue, red, or orange are often used in forestry as they stand out against the natural colours of the trees.
Use Appropriate Tools:
Depending on the surface of the tree and the size of your signage, you may need different tools for application. For larger areas, you can use a paintbrush or roller, ensuring that you cover the intended surface evenly. For smaller signs or detailed work, you may need thinner brushes or even spray paint cans for more precise application.
Consider Visibility and Height:
When painting your signs, consider the height at which they will be placed on the trees. Signs should be visible to passersby, so consider placing them at eye level or slightly above. This will also ensure that the signs are easily readable and serve their intended purpose.
Maintain and Refresh as Needed:
Over time, painted signs on trees may fade or become less visible due to weather exposure and natural wear. To maintain the effectiveness of your signs, periodically assess their condition and repaint them as needed. This will ensure that the signs remain visible and legible for the intended duration.
By following these steps, you can effectively paint signs on trees, providing clear communication to those who encounter them. Remember to consider the specific regulations and colour-coding systems in your area, as they may vary depending on local guidelines and landowner preferences.
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Attaching signs to mounting plates
When attaching signs to mounting plates, it is important to consider the surface to which the plate will be affixed, as well as the durability and longevity you require for the sign.
If you are attaching a sign to a wall or door, you can use industrial-strength double-sided foam tape, which provides a secure bond and is available in multiple thicknesses. This option is best for flat, non-porous surfaces and provides a polished look. Another option for walls is to use adhesive tape, ensuring that you use a level to achieve a straight installation. Remove the adhesive backing and press the sign to the wall for 30 seconds.
For signs that need to be routinely changed, hook and loop Velcro mounting tape is a good option. This method is best for low-bond, easy-to-replace installations and can be used on painted, stained, or varnished wood or walls.
If you are attaching a sign to a metal surface, magnetic tape is an ideal choice, allowing for easy removal and reapplication.
For exterior signage, you can use stand-offs, which provide a gap between the sign and the wall for a professional appearance. This method involves screwing the sign to the wall and using stand-offs to cover up the screws.
When attaching signs to trees, it is important to consider the growth of the tree to avoid damaging the tree or the sign. One method is to use small pieces of pressure-treated 4x4 wood as mounting plates and screw them into the trees before attaching the signs. You can then attach the signs to these mounting plates. This method ensures that the signs are securely attached while allowing for tree growth.
Another option for attaching signs to trees is to use nails. However, it is important to leave a gap between the nail head and the sign to accommodate tree growth. Aluminium nails with ribs on the shaft and a rubber washer are suitable for this purpose and are easier to attach than screws. You can also use roofing nails with a plastic cap, which are effective in windy conditions.
To avoid using nails or screws, you can punch holes in the sign and use elastic to attach it to the tree, allowing for tree growth and minimal maintenance.
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Frequently asked questions
You can use nails, screws, or staples. If you use nails, make sure they are long roofing nails with about a 1" gap so that the tree has room to grow without popping off the sign. You can also use stainless steel or hot-dipped galvanized bolts for long-term attachment.
When using nails, deliberately leave a 1/2-inch gap between the nail head and the marker. This gives the marker room to slide along the nail as the tree grows, instead of being engulfed by it. You can also fold the corners of the sign and use staples to attach it to the tree.
You can use aluminum nails, which are logger-friendly and allow the tree to grow without damaging the sign. Avoid using copper nails as they can kill trees. You can also use nails with plastic washers or roofing nails with a plastic cap to better secure the sign.
Yes, you can use a wire fence or elastic to attach the signs. Punch holes in each corner of the sign and run a length of elastic around the tree and through the holes. This method is commonly used in Finnish natural parks and allows for tree growth.









































