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→Stone mulch
===Stone mulch===
===Stone mulch===
Inorganic mulch materials can be of particular value applied in areas with rapid water flow, or extended ponding times i.e. around [[inlets]] and in the the centre of recessed, bowl shaped or [[swale]] practices. Inorganic mulches resist movement from flowing water and do not float. Applying a thin layer of inrgonaic mulch over the top of wood based mulch has been shown to reduce migration of the underlying layer by around 25% <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>.
<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>
Inorganic mulches which may be available locally, include:
*Crushed glass
*Crushed mussel shells
*Pea gravel
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[[Category:Materials]]
[[Category:Materials]]
[[Category:Landscaping]]
[[Category:Landscaping]]