T4.4 Seedlings, cuttings and transplants
general - root collar diameter - cell grown trees - seedlings, cuttings & transplants - stem diameter - girth
For Seedlings, Cuttings and Transplants, Root Collar Diameters will be minimum of 3mm and be graded in one or two bands, increasing with height and must be typical of the species e.g. 3/4, 4/6, 6/8, 8/10 or 10/12.
More details can be found under the Summary of Specification Criteria and also in European Technical and Quality Standards of Hardy Nurserystock (European Nurserystock Association E.N.A., Oct.1996) and Cell Grown Plants: A Guide to the Use and Specifications of Cell Grown Trees and Shrubs produced by Members of the Horticultural Trades Association Forestry Group.