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[[File:Wood chip mulch.jpg|thumb|Pine mulch will help hold moisture in the soil]]
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*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.
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*As in other landscaping applications, the mulch helps to preserve soil moisture for plant survival, and suppresses weed growth.
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*Mulch can also help to maintain the organic matter content of underlying filter media, which provides cation exchange capacity for pollutant removal.
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*Regular fresh applications of wood mulch can also promote denitrification, reducing nitrates in impacted surface waters.
 
*Mulch should be applied on the surface of the BMP in a layer of 75 -100 mm.
 
*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.
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*Double-shredded hardwood or softwood mulch is recommended for LID facilities. Its fibrous texture knits together somewhat; providing limited erosion control.
*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.
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*In areas with particularly high flow (e.g. around [[inlets]] and [[forebays]]) coarse decorative aggregate or [[stone]] is recommended to better dissipate energy and protect it from erosion.
*Shredded hardwood 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 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.  
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*This advice also holds for [[stormwater planters]], which often experience concentrated flow from a [[downspout disconnection| roof downspout or drain]].
<ref> Simcock, R and Dando, J. 2013. Mulch specification for stormwater bioretention devices. Prepared
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*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>
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 also promotes denitrification, reducing nitrates in impacted surface waters.
   
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[[Category:Materials]]
 
[[Category:Materials]]
[[Category:Green Infrastructure]]
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[[Category:Green infrastructure]]

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