We made a map of the roadside trees in Sanda city, Hyogo prefecture, through one year investigation in 2003 under a seminar program ”Plants Research Club” in the Museum of Nature and Human Activities, Hyogo. 23 kinds of deciduous trees and 6 kinds of evergreens were used as the roadside trees in Sanda city. At the planting rate, the deciduous trees occupied about 81%, and of all the tree species Japanese Zelkova was the most at about 29%. Furthermore, we investigated a vigor diagnosis on 1349 roadside trees planted along the ring road in Woody-town area. As a result, the remarkable decline of tree vigor or the collapse of tree shape was found at about 13% of the trees. Such trees spoil the beauties of scene of the roadside trees. The appropriate management such as an exact pruning based on the characteristic of trees is required to maintain the tree shape and vigor for the roadside trees.
