It is said that many Japanese cypress trees were planted in the west of the Kanto region (central area to the Kansai region) but it has been identified that a large number of a different type of Japanese cedar tree were also planted in this area.
ヒノキは関東以西（中部～関西）に多く植えられたといわれるが、その地域では、関東などとは違う系統のスギが多く植えられたという指摘もある。