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	<title>Living wall - Revision history</title>
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	<updated>2026-04-11T21:15:33Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://gardenology.mywikis.net/w/index.php?title=Living_wall&amp;diff=2595&amp;oldid=prev</id>
		<title>Raffi at 14:20, 9 April 2007</title>
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		<updated>2007-04-09T14:20:49Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Image:Greenwall.jpg|thumb|Green Wall at [[Queen's University]], Kingston, Ontario, Canada]] A '''living wall''' is a vertical [[garden]]. [[Plant]]s are rooted in compartments between two sheets of fibrous material anchored to a wall. Water trickles down between the sheets and feeds moss, vines and other plants. Bacteria on the roots of the plants metabolize air impurities such as [[volatile organic compounds]].&lt;br /&gt;
&lt;br /&gt;
Second-order walls contain only plants and some insects, while third-order walls house fish and salamanders in a pool at the bottom of the wall, where the trickling water is captured before being filtered and recirculated to the top again.&lt;br /&gt;
&lt;br /&gt;
'Active walls' are joined to a building's air circulation system. Fans blow air through the wall and then recirculate the air throughout the building. Some active walls are kept behind glass to create more predictable airflow effects. 'Inactive walls' have no mechanized air circulation.  Instead, they are kept open to promote as much free air circulation as possible.&lt;br /&gt;
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The living wall is a form of [[urban agriculture]] or [[urban gardening]]. It may be built as a work of [[art]] for its beauty. It is sometimes built indoors to help cure [[sick building syndrome]] or otherwise increase the oxygen levels in recirculated air.&lt;br /&gt;
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It is also a means for water reuse, at least as utility water. The plants may purify slightly polluted water (such as [[greywater]]) by digesting the dissolved nutrients. Bacteria mineralise the organic components to make them available to the plants.&lt;br /&gt;
&lt;br /&gt;
Living walls are particularly suitable for cities, as they allow good use of available vertical surface areas. They are also suitable in arid areas, as the circulating water on a vertical wall is less likely to evaporate than in horizontal gardens. In arid and hot areas, the living wall can be part of the external walls of a building, and can be used to refresh the latter.&lt;br /&gt;
&lt;br /&gt;
==See also==&lt;br /&gt;
*[[Green roof]]&lt;br /&gt;
*[[Roof garden]]&lt;br /&gt;
*[[Hydroponics]]&lt;br /&gt;
*[[Hanging Gardens of Babylon|The Hanging Gardens of Babylon]]&lt;br /&gt;
*[[Musée du Quai Branly]]&lt;br /&gt;
*[[Biofiltration]]&lt;br /&gt;
&lt;br /&gt;
==External links==&lt;br /&gt;
*[http://www.eltlivingwalls.com/ ELT LIVING WALL SYSTEMS]&lt;br /&gt;
*[http://www.greenrooftops.com/ G-SKY Green Wall Systems]&lt;br /&gt;
*[http://www.verticalgardenpatrickblanc.com/ Patrick Blanc's website] &lt;br /&gt;
*[http://livebuilding.queensu.ca/mechanical/biowall The living wall at Queen's University]&lt;br /&gt;
*[http://www.thelivingwall.net/ The Living Wall System]&lt;br /&gt;
*[http://www.greenwallaustralia.com.au/ Greenwall Australia's Website]&lt;br /&gt;
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&lt;br /&gt;
[[Category:Gardening]]&lt;br /&gt;
[[Category:Urban studies and planning]]&lt;/div&gt;</summary>
		<author><name>Raffi</name></author>
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