Semi Intensive Green Roof Plants

Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.

Semi intensive green roof plants.

Plants for intensive and semi intensive green roofs. Semi intensive intensive plants greengrid is a registered trademark of weston solutions inc. Semi intensive green roof a semi intensive green roof system is characterized by small herbaceous plants ground covers grasses and small shrubs requiring moderate maintenance and occasional irrigation. They come in different sizes and a variety of species depending on where your project is located.

This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology. Plugs are small plants that have been grown in a nursery and are planted into the green roof media on the roof. Dedicated irrigation system variable annual fertilization and advanced horticultural care. 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.

In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. 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. Depth of growing medium is typically 6 to 20 inches and can be planted with a large variety of plants. A typical growing medium depth for a semi intensive green roof is 6 to 12 inches.

Typical sizes include quarts 12 per flat 3 24 per flat 38s 38 per flat and 72s 72 per flat. Grasses add texture and motion to the roof landscape and a habitat for birds and insects as they do in a traditional landscape. The greengrid system is a proprietary technology of weston in the u s.