There is an opportunity during site layout design to allocate appreciable areas for tree planting. This opportunity should not be lost as revisiting the site later with an alternative plan is very difficult in terms of cost and the practicalities of transformation.
These areas should be identified and protected during construction works to prevent compaction and contamination of the soils.
Important considerations in selecting trees for planting are suitable soil conditions and appropriate space for tree growth. For example, tight corners and narrow verges on road schemes are generally unsuitable for tree planting.
(See Suitability of Native Trees for Planting)