What is the best time to apply pesticides to flowers?

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