Extensive Green Roof Plant List

Green roofs and to trial untested plants for their adaptability to this environment.

Extensive green roof plant list. Although sedum species have dominated the plant palette for extensive green roofs there is growing interest in expanding the plant list for extensive green roof systems. Common sedum species used include sedum acre s. The ultimate goal of the trial is to develop a diverse and extensive list of recommended plants for green roof cul. Mat forming species of sedum sempervivum and moss are good choices.

A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq. The plant list discussions below pertain to extensive green roofs. Try dry habitat perennials and. In order to effectively.

These require irrigation and a substrate depth of at least 200 mm. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. The bauder green roof vegetation installation guide and the bauder extensive green roof maintenance guide both of which can be found at www bauder co uk.

For a conventional roof. 15 to 50 per square foot. Vegetables are the other main group of annual plants used on green roofs. 8 to 20 per square foot.

Some green roofs are constructed specifically to support sports turf. Even though the list of native plants for use in extensive green roofs is relatively short there are a few selections that may grow well as native accent plants with occasional irrigation. Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof. Album delosperma could be tried in a sunny frost free area.

Ferns such as polypodium vulgare and asplenium trichomanes could be used in dry shady conditions. Climate clearly plays a major role in choosing the best plants for a green roof. While most of the first extensive green roofs in the us were planted with non native succulent species mostly sedum species the plant palette for green roofs in the united states and in minnesota is rapidly expanding to include many herbaceous plants and grasses. In temperate regions of north america we have recommended natives such as sedum ternatum white flowered sedum a shade lover opuntia humifusa prickly.

Bauder sedum blanket xf300 indicative plant list species sedum acre sedum album bella d inverno sedum album coral carpet sedum ewersie sedum kamtschaticum ellacombianum. Fol lowing an initial five year evaluation phase new trials of uncommon and or untested plants will continually cycle into the green roof gardens.