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|  | *As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth. |  | *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. |  | *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 or pine mulch is generally recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control. In areas with particularly high flow (e.g. around inlets) inorganic mulch or coarse decorative aggregate or [[stone]] is recommended instead, as these will not float. All organic mulches have the potential to float and migrate in surface flow, after a previously dry period. <ref> Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared by Landcare Research New Zealand Ltd for Auckland Council. Auckland Council technical report, TR2013/056 </ref>
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|  | *Regular fresh applications of wood mulch can also promote denitrification, reducing nitrates in impacted surface waters. |  | *Regular fresh applications of wood mulch can also promote denitrification, reducing nitrates in impacted surface waters. | 
|  | + | *Shredded hardwood mulch or pine mulch is generally recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control.  | 
|  | + | ===Contraindication=== | 
|  | + | *In areas with particularly high flow (e.g. around [[inlets]] and [[forebays]]) coarse decorative aggregate or [[stone]] is recommended instead, as these will not float. All organic mulches have the potential to float and migrate in surface flow, particularly after a previously dry period. <ref> Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared by Landcare Research New Zealand Ltd for Auckland Council. Auckland Council technical report, TR2013/056 </ref> | 
|  | + | *This advice also holds for [[stormwater planters]], which often experience concentrated flow from a [[downspout disconnection]] or similar.  | 
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|  | [[Category:Materials]] |  | [[Category:Materials]] | 
|  | [[Category:Green infrastructure]] |  | [[Category:Green infrastructure]] |