A new gardening question of the day appears every day of the year on the front page of Almanac.com. Below is the answer to one of the questions from our Gardening Questions and Answers Archive where you can find over 400 more gardening questions (with answers!).
My tomato leaves are covered with a sticky yellow substance. What is this?
Most likely you're being visited by aphids, tiny insects whose main job is to suck the juice out of your tomato leaves. They give off this sticky substance, called honeydew, which attracts ants and causes mold to develop. Controlling these interlopers usually requires the use of an insecticidal soap spray. Consult your local nursery for the best option in your area.
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