Mulch

• Mulch should be applied on the surface of the BMP in a layer of 75 -100 mm.
• As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth.
• Mulch is considered to be an normal finishing touch to many types of formal landscaping. Maintaining mulch application can help increase aesthetic value of LID BMPs.
• Shredded hardwood mulch is recommended for LID facilities. Its fibrous texture knits together somewhat; providing erosion control on the surface.
• Regular fresh applications of wood mulch also promotes denitrification, reducing nitrates in impacted surface waters.

a top dressing over vegetation beds that provides suppresses weeds and helps retain soil moisture in bioretention cells, stormwater planters and dry swales.

Best management practice. State of the art methods or techniques used to manage the quantity and improve the quality of wet weather flow. BMPs include: source, conveyance and end-of-pipe controls.

a top dressing over vegetation beds that provides suppresses weeds and helps retain soil moisture in bioretention cells, stormwater planters and dry swales.

Low Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.

Includes the protection of soil from dislocation by water, wind or other agents.