Spiral Shelters tree guards are a low-cost product for protecting single-stemmed tree seedlings / transplants. Manufactured from recycled PVC, Spiral Shelters have the ability to expand with the growing tree stem and provide a sheltered environment to enhance growth. Our spirals are manufactured with a generous overlap to protect from herbicide spray and provide greater browsing protection once the spiral begins to unwind. Our spiral shelters are manufactured with a green tint which helps prevent leaf scorch and significantly reduces their visual intrusiveness. Spiral shelter tree guards are manufactured in four diameters and three heights to suit most planting requirements.