PROBLEM TO BE SOLVED: To provide an excellent method for controlling plant disease injuries in flower and ornamental bulbous plants.SOLUTION: The plant disease injuries in the flower and ornamental bulbous plants can be controlled by passing through a treating step of locally treating soil of a growing area for the flower and ornamental bulbous plants before planting bulbs of the flower and ornamental bulbous plants with effective amounts of tolclofos-methyl and azoxystrobin； a stirring step of stirring the soil to a depth of 5-50 cm from the soil surface of the growing area after the treating step； and a step of planting the soil stirred with the stirring step with the bulbs of the flower and ornamental bulbous plants.
