Water Resources Program  |  Green Roof -- Maintenance and Care

Green Roof
Plant Types
& Benefits
& Care
Green Roof Monitoring Monitoring Results

MAINTENANCE AND CARE County scientist observing growth of sedums
In general, the roof is self sufficient, however during dry periods (greater than six weeks without appreciable rainfall) the sedums are sometimes watered using an irrigation system.  This system consists of soaker hose that runs along the crest of the roof and allows for thorough watering with minimal loss to evaporation.  The roof also needs to be periodically weeded by hand to remove any invasive species that may have made it to the roof through airborne seed or from birds.  During the initial growing period, an environmentally friendly fertilizer and pre-emergent were put down to help with sedum establishment.  Now that sedum coverage is nearly complete, we will discontinue any further use of chemicals on the green roof.



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