|Shrub and Tree Growth Form|
|Woody species are defined as shrubs or trees by their growth form.|
woody species tend to grow naturally as shrubs eg. hawthorn (Crataegus
monogyna), blackthorn (Prunus spinosa) and hazel (Corylus
avellana). Hawthorn is the classic hedge forming species and is almost
always recorded as a shrub except when it has become very old, large and
woody with apical dominance and the bottom 2m has become bare and devoid
of leafy vegetative growth.
Trees usually have a single stem with apical dominance. Also classified as trees are former shrubs which have out-grown their shrub growth form by becoming larger with thickened woody stems and apical growth dominating. For example a line of trees such as Ash along a Fence could be coppiced to induce a shrub growth form and be recorded as a Hedge. If left unmanaged, at some point it will grow out to be a line of trees again.
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