Young tree and polycyclism
On young Cedar trees, annual shoots may be edified during one
 ,
two
or more rarely tree flushes of growth
which are normally separated by intra-annual stops or slowing down of growth ( ).
The annual shoots are composed of one, two or three growth units and thus nammed mono-, bi or tricyclic.
In some cases, only lateral sub-apical buds may develop during the second or third flush of growth .
In Cedrus atlantica, the polycyclism phenomenon is rare and expresses in certain growth conditions. In Cedrus libani, the polycyclism rate is higher. The polycyclism is frequent in individuals of Lebanese provenances and involve a modification of branching pattern.
Each growth unit may bear a pseudowhorl of dominant branches .
By this phenomenon, the branching presents a more dense aspect .
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