How to Adjust Tree Markers So They Don’t Fold (And Leave Room for Tree Growth)
If you’ve ever returned to a labeled tree and found the marker bent inward like a little “book,” you’re not alone. Tree marker folding is a common issue—especially in parks, arboretums, campuses, and botanical gardens where trees grow steadily over time.
The good news: the fix is simple. In most cases, you just need to loosen the screw slightly so your tree marker has room to move as the trunk expands.
Why Tree Markers Fold on the Trunk
Most folding happens for one reason: the marker was tightened too much during installation.
As the tree adds bark and girth, a marker that’s clamped tightly to the trunk can’t shift naturally. Instead, it gets forced to pivot at the mounting point, which can cause the face of the marker to fold closed and become unreadable.
In other words:
Too tight = tree growth pressure = marker folds.
Quick Fix: Loosen the Screw (So the Marker Stays Open)
All you need is a screwdriver.
Step-by-step adjustment
Locate the mounting screw on the tree marker.
Unscrew 1–2 turns (just enough to reduce pressure).
Check for slight movement by gently wiggling the marker.
You want it snug, not clamped.
Reposition the marker face so it sits open and readable.
Step back and confirm readability from normal viewing distance.
Rule of thumb
If the marker feels “locked” into the bark, it’s too tight.
A properly installed marker should have a little give to accommodate growth and movement.
Our Built-In Solution: Spring-Mounted Tree Markers
We also build our tree markers with springs for a growth-friendly installation.
Why springs matter
Springs slowly provide the tree room to grow by reducing constant pressure at the mounting point. Instead of forcing the marker to pinch the bark or deform over time, the spring helps maintain a controlled amount of spacing as the trunk expands.
Benefits of spring-mounted tree markers:
Helps prevent folding and bending
Allows room for growth as trees mature
Reduces maintenance and rework over time
Keeps labels readable longer in public landscapes
How Often Should You Check Tree Markers?
A quick check helps keep your tree labels looking great:
Twice per year (spring and fall) for most environments
More often for fast-growing species or high-visibility areas
If you notice the marker starting to angle inward, loosening the screw early can prevent a full fold.