Semi Intensive Green Roof Plants

Plants for intensive and semi intensive green roofs.

Semi intensive green roof plants.

Dedicated irrigation system variable annual fertilization and advanced horticultural care. 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. The greengrid system is a proprietary technology of weston in the u s. They come in different sizes and a variety of species depending on where your project is located.

Grasses add texture and motion to the roof landscape and a habitat for birds and insects as they do in a traditional landscape. These vegetative green roofs are considered semi intensive due to the landscape design coupled with increased levels of maintenance. 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. Because this is the semi intensive level of the roof a variety of grasses bulbs and annuals were planted in the growing media mounds.

Due to the differences in growing medium between an extensive and intensive green roof the latter can accommodate deeper plantings with more diversity. Typical sizes include quarts 12 per flat 3 24 per flat 38s 38 per flat and 72s 72 per flat. Semi intensive intensive plants greengrid is a registered trademark of weston solutions inc. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.

Plugs are small plants that have been grown in a nursery and are planted into the green roof media on the roof. Depth of growing medium is typically 6 to 20 inches and can be planted with a large variety of plants. This system is able to retain more stormwater than an extensive system and provides the potential to host a richer ecology.