During a year, every 3 to 5 days, observe and record the external state of each tested hydrangea from the leaf development stage to the withered stage.
During the one-year period, every 3 to 5 days, the observation records the external state of each of the eight fairy flowers from the leaf spread period to the yellowing period.
During the period of one year, every 3-5 days, the external state of the tested Hydrangea was observed and recorded from the leaf opening stage to the withering yellow stage.<br>