Companion planting is the relationship between plants and insects and is the safest, natural way to garden organically. It is also about planting certain vegetables, herbs and flowers in your garden that attract certain pests that feed on harmful, undesirable pests. For example, perennial yarrow attracts ladybugs that consume masses of aphids. The lacewing that feeds on aphids, mealy bugs, mites and scale needs lots of pollen from flowers and evergreens for shelter. Wasps and bees are also beneficial to the garden. Even the prehistoric looking preying mantis is a friend. When you create a natural balance in your garden you'll discover how much better everything grows and you won't need to worry about damaging the environment.