V4 12 Stormwater Maintenance Manual

SUMMER SEASON  Conduct routine inspections and spot weeding (2-3 week intervals) to prevent flowering and reseed.  Establish the irrigation schedule for permanently irrigated systems.  Water non-irrigated systems during prolonged drought as noted above, applying 1” of water once per week. Heat waves, sustained wind and solar glare conditions (from reflective glass) may warrant more frequent watering of 2-3 times per week.  Monitor plant health and for microclimate effects.  Address pests if needed using organic, essential-oils based products, if possible. Apply preventative and/or curative fungicides if necessary, particularly in hot, humid climates in the Southeast U.S. and Gulf Coast. FALL SEASON  Conduct routine inspections and spot weeding (3-4 week intervals).  Monitor plant health and replant as needed.  Be cautious if you need to apply fertilizer during the early fall season as it may affect plant hardiness during the winter months. If it is absolutely necessary, we suggest diluting the application rate by 50-75%.  If the irrigation system is permanent, drain and winterize in cold regions by October 15th.  Plants will become dormant as colder temperatures persist in northern climates. In warmer climates, plants may go dormant or semi-dormant and weeds will continue, so remain vigilant by periodically weeding. OTHER CONSIDERATIONS  For intensive green roofs and garden-style settings, plant maintenance and care is more frequent and generally consistent with the requirements of ground-level landscaping. A horticulturalist or landscape professional can assist or make recommendations for your specific garden-roof installation.  Restorative maintenance on green roofs that have not been well maintained should be under the guidance of a GreenGrid representative or landscape professional. Restoration may include combination slow release and foliar (liquid) feeding, replanting or application of plant cuttings, temporary irrigation, etc.  Modules installed with less than full coverage, planted on site, or not fully rooted on delivery due to schedule demands will require a short period of additional maintenance on the roof, which may include additional watering and weeding in particular. As the plants mature, and less of the media is

hedule demands will require a short period of additional maintenance on the roof, which may include additional watering and weeding in particular. As the plants mature, and less of the media is exposed, the frequency of maintenance will decrease. DOCUMENTATION Maintenance activities should be recorded to document the type of activities completed, resources used and timing for future events. Routine submission of maintenance documentation is required to maintain plant warranty. The maintenance log and photos should record the following:  Person conducting maintenance, date and time. Time required for maintenance tasks.  Type of cutting, trimming or other plant care provided.  Soil testing results, fertilizer type/brand and application rate, if applicable.  Notations or photos about plant stress, watering rates, drought periods, and plant replacement(s).  Photos of all green roof areas, with close up photos of any problem spots. (888) 404-4743