Seasonal Variation in Root Regeneration of Transplanted Trees

Abstract

Three tree species, Norway maple, green ash, and ginkgo were transplanted at four different periods over the course of the 1979 growing season. Root regeneration was measured 1 year after transplanting. Regenerated roots were initiated primarily from the severed root ends. Norway maple showed the greatest capacity for root regeneration during this period. The availability of carbohydrates to support this new root growth was limited only during the period of active shoot growth in the early spring. Transplanting trees during this period should be avoided.