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Abstract
Plant selection criteria for extensive greenroofs include functional design intent, specific client’s desired effects, budget & maintenance constraints, life time expectancy of system, roof access & occupant safety, geographic location, microenvironments & macro-climates, sunlight exposure, humidity, maximum/minimum temperatures, soil weight, depth & composition and irrigation equirements. Low-growing, shallow-rooted, perennial plants that are heat, sun, wind, drought, salt,disease and insect tolerant are preferred for extensive greenroofs. Plant species should be ecologically compatable, fast growing but not invasive, flame retardant and have low nutrition requirements. They should have shallow, fibrous roots, long life expectancy or be self-propagating, lightweight at maturity and have low maintenance requirements, Low-growing ground covers resist drying out and being blown over by wind. Evergreen plants and seasonally flowering plant make good combinations for providing aesthetical pleasing extensive greenroofs year-round.
Plant selection criteria for extensive greenroofs include functional design intent, specific client’s desired effects, budget & maintenance constraints, life time expectancy of system, roof access & occupant safety, geographic location, microenvironments & macro-climates, sunlight exposure, humidity, maximum/minimum temperatures, soil weight, depth & composition and irrigation equirements. Low-growing, shallow-rooted, perennial plants that are heat, sun, wind, drought, salt,disease and insect tolerant are preferred for extensive greenroofs. Plant species should be ecologically compatable, fast growing but not invasive, flame retardant and have low nutrition requirements. They should have shallow, fibrous roots, long life expectancy or be self-propagating, lightweight at maturity and have low maintenance requirements, Low-growing ground covers resist drying out and being blown over by wind. Evergreen plants and seasonally flowering plant make good combinations for providing aesthetical pleasing extensive greenroofs year-round.
Date
5/2003
5/2003
Author(s)
John White, Edmund Snodgrass
John White, Edmund Snodgrass
Page(s)
Keyword(s)
green roof; plant selection
green roof; plant selection