However, attention must be paid to management, such as by pruning immediately after the leaves change color and fall in order to change the C/N (carbon/nitrogen) ratio, and by promoting the growth of narrow roots by digging around them and modifying the soil.
但し、紅葉・落葉直後にすぐ剪定することでC/N比（炭素/窒素比）を変えたり、根回しや土壌交換による細根の発生をもたらすなど管理に留意を要する。