Colin from Mansfield, Ma writes
Can Liquid Copper damage tomato fruit if applied on a hot day
Like most products, Bonide Liquid Copper Fungicide Concentrate should not be used in temperatures over 85 degrees. We usually recommend that you spray early in the morning or in the evening when the temperatures are usually cooler and the product will have time to dry before temperatures reach 85 or above. Spraying in the heat of the day will cause the foliage to burn.
Answer last updated on: 07/02/2021
