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T7.4 Rootball trees

root system - root protection - root wrapped trees - rootball trees - container grown trees - cell grown trees

Rootballs must be firm and solid and the roots must penetrate the whole ball. They must be enclosed in hessian (burlap). The size of the rootball must be appropriate for the species/cultivar and its age and growth rates under the cultural and soil conditions within which it is growing. The root ball must be free of perennial weeds. Rootballed trees are indicated by the letters ‘‘RB’’ in the plant specification.

 

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ROOTBALLED TREE (Sorbus aucuparia 'Asplenifolia', 20-25 cm girth)

For Standard trees of girth 12-14 and larger and the equivalent sizes of Multi-stemmed and bushy trees the root ball will be additionally protected with ungalvanised wire netting or wire basket. All materials used to support root balls must decompose within eighteen months of planting and not constrict the continuing growth of the tree. Root control bags can be used instead of RB.