Climate clearly plays a major role in choosing the best plants for a green roof.
Extensive green roof plant list.
For a conventional roof.
Vegetables are the other main group of annual plants used on green roofs.
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.
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.
In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs.
The ultimate goal of the trial is to develop a diverse and extensive list of recommended plants for green roof cul.
Album delosperma could be tried in a sunny frost free area.
Green roofs and to trial untested plants for their adaptability to this environment.
8 to 20 per square foot.
Bauder sedum blanket xf300 indicative plant list species sedum acre sedum album bella d inverno sedum album coral carpet sedum ewersie sedum kamtschaticum ellacombianum.
Ferns such as polypodium vulgare and asplenium trichomanes could be used in dry shady conditions.
Common sedum species used include sedum acre s.
Mat forming species of sedum sempervivum and moss are good choices.
The plant list discussions below pertain to extensive green roofs.
Along with the makeup and depth of the growing medium selecting the right plants is crucial to the success of a green roof.
In temperate regions of north america we have recommended natives such as sedum ternatum white flowered sedum a shade lover opuntia humifusa prickly.
Fol lowing an initial five year evaluation phase new trials of uncommon and or untested plants will continually cycle into the green roof gardens.
These require irrigation and a substrate depth of at least 200 mm.
In order to effectively.
Try dry habitat perennials and.
Plants for green roofs.
15 to 50 per square foot.
Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.
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.
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.
Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof.
