Robert from Dyer, Indiana writes
Thrips on cattleya orchids . Need to know the amount to add to one gallon of water for spraying plants?
You would use 8oz (1/2lb) of Acephate 97UP Insecticide per 100 gallons, which breaks down to 0.08 oz per gal of water, which is about 2 grams or 1/2teaspoon. If you only have a few plants, then you may want to consider Bonide Systemic Insect Control, which has the same active ingredient but its easier to measure for smaller applications on roses for thrip control.
Answer last updated on: 05/14/2021
