SOPRANATURE’s TOUNDRA BOX combines all the necessary components of a green roofing system into a single modular tray. Each tray includes built-in drainage, filter fabric, growing medium and pre-grown plants protected by a removable retention frame. Sedum mixes are adaptable according to the hardiness zone and climatic conditions. Suitable for both small and large surfaces, these lightweight, easy-to-carry trays are easily assembled in minutes to create an instant green roof.