Photo by John Howard
Can't insect just eat whatever plant is available? Research says no. Insects need native plants to survive. They have forged a relationship with specific plants over thousands of years. Their bodies have adapted the ability to digest native plants. They do not possess enzymes to digest foreign plants. They cannot break down the chemicals that those plants produce to ward off predators. Only plants that insects have a long standing relationship with are the ones they can and will eat. Some of the exotic plants from Asia and elsewhere have no natural enemies here.