Bio Spiral Tree Guards

Addressing challenges in tree planting

One of the most important challenges in tree planting today is the need to use conventional plastics to ensure survival and healthy growth of young tree plants. Many protective solutions are made from alternative materials, such as cardboard, which have been largely unsuccessful at trails.

Launched in the 1960’s, the Rainbow Spiral Guard offers an effective solution for seedling protection that stands up to all weather conditions – does not shrink and allows air circulation through the pre- formed holes. The product is easy to unfurl, fit for purpose and cost effective.  Additionally, the spiral protects trees against herbicides drifting in the wind, offering more flexibility, efficiency and effectiveness of weed control.

Rainbow has now developed its first bio-based tree spiral, ‘Rainbow Bio 1’ that has passed all required tests against EU guidelines at an independent laboratory and is classed as fully compostable. The spiral has also gained the DIN CERTO certificate. Over the last three years, the Rainbow Bio 1 has been field tested in several trials across the UK and Europe. This has resulted in a product that is suitable to last for >3 years at the typical range of temperature extremes that have been found in forests.

Strong bio credentials

The Rainbow Bio-spiral offers a significant improvement on products made from conventional plastics; however, Rainbow also recognizes there is a great deal over confusion about innovations in plastics.

This can in part be attributed to legislation being heavily geared toward the packaging industry. The Rainbow Bio Spiral is made from 100% biodegradable polymers; however, the finished product cannot be classed as biodegradable but should be classed as bio-based and compostable. Rainbow encourages all stakeholders to adopt this terminology. The key difference lies in the fact that products classed as biodegradable need to degrade within 6 months, making the product not fit for purpose. 


Please click the questions below to reveal the answers!

Q. What are they made from?
A.They are manufactured from 100% biodegradable materials
Q. How long do they last?
A.Biodegradable stabilizers are added to the material to stabilize the the spiral sufficiently to withstand UV degradation up to 4-5 years in the place of use
Q.Why do they come in different colours?
A. They have different colours to enable them to fit as unobtrusively as possible into the surrounding area.
Q.Whats better holes or no holes?
A. Our experience shows that young trees develop better and more reliably with ventilation holes. This reduces the effects of mildew and leaf burn, both of which stunt young tree growth.
Q. Why do they come in different heights?
A. To give protection from different size browsing animals (rabbits, hare, muntjac, deer etc.)
Q. How long will I need to use them for?
A. Usually 4 years is sufficient to allow the tree to develop sufficient strength to withstand such animal attacks.
Q. How do they stop vermin/animals, can they chew through it?
A.The animals are attracted by smell which is stopped from directly reaching the animal. In most cases if the animal cannot see the young tree it will not try and reach it. The spiral material is not easily chewed through
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