Semi Intensive Green Roof Plants

This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology.

Semi intensive green roof plants.

Plugs are small plants that have been grown in a nursery and are planted into the green roof media on the roof. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. The greengrid system is a proprietary technology of weston in the u s. These vegetative green roofs are considered semi intensive due to the landscape design coupled with increased levels of maintenance.

Dedicated irrigation system variable annual fertilization and advanced horticultural care. They come in different sizes and a variety of species depending on where your project is located. 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. Plants for intensive and semi intensive green roofs.

An intensive green roof is more like a conventional garden or park and can have virtually no limit to the plant types that can be used. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. A typical growing medium depth for a semi intensive green roof is 6 to 12 inches. Because this is the semi intensive level of the roof a variety of grasses bulbs and annuals were planted in the growing media mounds.

Typical sizes include quarts 12 per flat 3 24 per flat 38s 38 per flat and 72s 72 per flat. Due to the differences in growing medium between an extensive and intensive green roof the latter can accommodate deeper plantings with more diversity. Depth of growing medium is typically 6 to 20 inches and can be planted with a large variety of plants.