Rapstrap Tree Ties - Self-Releasing

Key Features

Taking advice from the Forestry Commission, and collaborating with Biodegradable Plastic Products Ltd and the Wittenburg group, we have developed this unique self-releasing tree tie design to meet the requirements of commercial growers:

- expands with your tree to reduce maintenance visits
- allows wind movement to strengthen the stem
- quick to install with standard 25mm tree ties and spacers
- automatically releases to prevent stem constriction
- point of release easily set according to stem diameter
- 100% recycled or biodegradable versions available

As an additional feature, if required, the blue biodegradable version can also include added pepper to act as a deer-deterrent.

This innovative tie is formed by the union of two interconnected straps: Firstly, an elasticated cellular strap attaches the tree to the supporting stake, and then a secondary interlocking strap engages with one of the exposed cells to secure everything together.

This results in a sophisticated multi-functional tie:

As the tree moves in the wind, the primary cellular strap expands slightly, and this exercises the stem to naturally strengthen it. However, this strap cannot come undone because the secondary strap locks it in place.

Then, as the tree grows, the enlarging stem gradually pulls the secondary strap out of the interlocking cell. And only when it is fully retracted will the primary strap release the tree.

The point of release is easily controlled by simply adjusting the length of the locking strap. When the stem reaches the appropriate diameter, the tree will come undone.

Full Installation Guide

To avoid damaging the roots, insert the stake first, then plant the tree afterwards. Ideally, the tree should be placed downwind of the stake to prevent them blowing against each other. To keep stake and stem apart, the tree should also be planted slightly away from the stake (25-50mm), and current recommended paractice is to ensure the top of the stake reaches about 1/3 of the total height of the tree.

Tip: for easier installation, if possible, attach the tree tie to the stake before starting the planting process.

1. Attaching the Tree Tie to a Stake

Preliminary Steps

To prevent the tree rubbing against the stake, place a spacing cushion or pad behind the mounting bracket as required.

attaching a self-releasing tree tie to a stake

Ftting Option 1

a) Use the integrated mounting bracket to fit the tree tie near to the top of the post. Firmly screw or nail the bracket to the stake.

Fitting Option 2

b) Alternatively, attach using a standard 25mm tree tie. This should then be secured using screws or nails to stop it slipping.

2. Install the Tie Around the Tree

a) Loop the cellular strap around the tree using the large rectangular aperture. DO NOT pull this strap too tight.

inserting locking strap through end cell

b) Insert the locking strap through one of the cells after the aperture. Pull this strap snug around the stem.

c) Trim the end of the locking strap to allow for required stem growth. Leave about 20mm per year.

3. How the Tie Grows and Releases

cells expand as the tree moves in the wind

a) As the wind blows the tree, the cellular strap stretches to allow stem movement. But the locking strap does not move.

locking strap retracts as the tree grows

b) As the tree stem grows, the cellular strap expands with it, and the locking strap gets gradually pulled free.

ties come undone when preset maximum growth is reached

c) Once the locking strap has been fully retracted, the cellular strap is free to release from the tree.