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	<id>https://www.gardenology.org/w/index.php?action=history&amp;feed=atom&amp;title=Living_wall</id>
	<title>Living wall - Revision history</title>
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	<updated>2026-04-10T02:59:57Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.gardenology.org/w/index.php?title=Living_wall&amp;diff=2595&amp;oldid=prev</id>
		<title>WikiWorks 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&amp;#039;s University]], Kingston, Ontario, Canada]] A &amp;#039;&amp;#039;&amp;#039;living wall&amp;#039;&amp;#039;&amp;#039; 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;
&amp;#039;Active walls&amp;#039; are joined to a building&amp;#039;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. &amp;#039;Inactive walls&amp;#039; have no mechanized air circulation.  Instead, they are kept open to promote as much free air circulation as possible.&lt;br /&gt;
&lt;br /&gt;
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;
&lt;br /&gt;
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&amp;#039;s website] &lt;br /&gt;
*[http://livebuilding.queensu.ca/mechanical/biowall The living wall at Queen&amp;#039;s University]&lt;br /&gt;
*[http://www.thelivingwall.net/ The Living Wall System]&lt;br /&gt;
*[http://www.greenwallaustralia.com.au/ Greenwall Australia&amp;#039;s Website]&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
[[Category:Gardening]]&lt;br /&gt;
[[Category:Urban studies and planning]]&lt;/div&gt;</summary>
		<author><name>WikiWorks</name></author>
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