Urban tree populations in cities around the world are on the decline. For over 23 years, GreenBlue has performed research into why urban trees fail and what can be implemented to change this degeneration. Arming urban landscape professionals of all trades with proven urban tree planting methods and best practice techniques is the best way to ensure the successful establishment of our urban tree canopy cover – and this is exactly what GreenBlue has put together here.<\/p>\n
Having already made a decision on planting location and tree species, landscape architects and specifiers should consider the following process when designing the exact profile of the tree pit and ancillaries. Having made a decision on species and location, the following process should be observed when designing the exact profile of the tree pit and ancillaries:<\/p>\n
Available root space<\/strong> \u2013 Soil volume requirements for trees can be estimated using several methods. As stated earlier, in a natural environment a root system can extend two to three times the radius of the tree canopy. Probably the simplest way of calculating a minimum required soil volume is to take the projected canopy area of the mature tree, multiplied by a depth of 0.6m. The shape of this area can be configured to suit the particular site. Other methods are based on mature trunk girth and are possibly more accurate as they provide for different foliage shapes. The old method of providing an area the size of the pavement opening is clearly insufficient, and commits the tree to an untimely death, or a lifetime of costly repairs.<\/p>\n Engineering requirements<\/strong> \u2013 With many trees being planted immediately adjacent to highways and engineered structures, it is vital that root volume beneath or around such is considered. Engineering requirements for hard surfaces are directly opposed to horticultural requirements. Structural soil modules or similar must be considered early enough in a project to be incorporated during the civils or groundwork stage.<\/p>\n Urban tree populations in cities around the world are on the decline. For over 23 years, GreenBlue has performed research into why urban trees fail and what can be implemented to change this degeneration. Arming urban landscape professionals of all trades with proven urban tree planting methods and best practice techniques is the best way […]<\/p>\n","protected":false},"author":3409,"featured_media":1247,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","footnotes":""},"class_list":["post-252","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\n\n