Green Roof Planting Grasses

Shrubs to one metre in height are best used in substrate depths of 250 mm or more.

Green roof planting grasses.

For intensive green roof. Follow the manufacturer s instructions and install it on your roof top. Their rhizomes can be invasive and may damage waterproofing membranes. Ready to roll carpets of sedum are easiest but you should also be able to find plug trays of sedums and other plants sold specifically for green roofs which will work out cheaper.

Try dry habitat perennials and ornamental grasses such as rudbeckia achillea potentilla armeria dianthus helictotrichon sempervirens stipa tenuissima and even bulbs such as muscari or small allium species such as allium flavum and a. Taking cuttings or sowing seed to grow on and transplant will of course be cheaper still. Purchase an underlayment system from a green roof dealer. It prefers sandy soil and dry conditions and the plants produce long stems of white or pink flowers throughout the summer.

On smaller scale green roofs species with excessive vigour such as couch grass cynodon dactylon and kikuyu pennisetum clandestinum should be avoided. Put 1 inch of soil or a compost soil mix on top of the underlayment system. An extensive green roof is a thin usually less than six inches lightweight system that is typically predominantly planted with succulents drought tolerant ground covering plants and grass. An intensive green roof is a deeper typically greater than six inches heavier system designed to sustain complex landscapes.