Answer: A number of insects might munch on the leaves of your plants. But in order to control them, you'll need to catch them in the act. Not all insecticides work on all plants against all insects. Try checking the backs of the leaves at different times of the day (early morning, midday, dusk) and you'll probably find a few of the critters munching away. Once you do, you can use an insecticide against them.
Best wishes with your garden.
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