What is the best time to apply pesticide to flowers?

When should pesticide be applied

The suitable time to spray pesticide on flowers is generally summer, specifically during the period of vigorous growth of the flowers. Summer is a suitable growth period for many kinds of flowers, but because the temperature is relatively high and the light conditions are relatively good at this time, it is also a vigorous period for the breeding of pests and diseases, so spraying pesticide or plant growth regulators on flowers at this time can effectively exert their efficacy.