Recent State of Demand and Supply on Nursery Stocks for Landscape Planting

Abstract

A study was carried out on the recent situation of the supply and demand for nursery stocks used in landscape planting. The historical changes in the amount of nursery stock from 1973 were looked into. Total amount of nursery stock increased repidly until 1974, and then began decreaseing. The ratio of trees to shrubs slightly increased until 1975. Since then, it has decreased on a continuous bases. The number of evergreen trees increased radically until 1975, but quickly declined after that year. The number of non woody trees (such as palm trees and bamboos) fluctuated from year to year. An investigation was then carried out into the regional distribution of nursery stock. Broad leaved evergreen trees were not grown in Hokkaido. Growth was restricted due to the cold wather. They were therefore produced in southern Japan. As for the destribution of conifers and deciduous trees, these trees were not affected so much by the climate compared to evergreen trees. Each species is produced in a particular district, but as a whole, conifers and deciduous trees were produced in almost all of Japan. In some prefectures, the number of stock trees changed drastically from year to year, while in other prefectures the number was rather constant. Other trends in the production of nursery stock are also described in this paper.