Plants and insects interact all day long, and at every stage in both of their life cycles. It may be the most important relationship in either of their lives, if the insect is the type that drinks nectar or eats leaves, which is to say the great majority of them. Plants and insects together make up about half of all multicellular organisms on earth; it wouldn’t be an exaggeration to say theirs is one of the most important relationships on the planet.
