The outer material of the Vertifelt  is guaranteed for 5 years and is simply a mechanism for holding the plants in the vertical situation. The critical element of our systems is our unique and removable felt pockets. These provide good soil depth, retain a high degree of moisture and keep the roots aerated to ensure plant health. Once planted in their felt pockets, the plants can be moved and swapped about without damaging the plant. This provides for easy maintenance to keep the garden looking stunning throughout the seasons.