All about plant health
Plants have an immune system just like people do. The healthier the plant, the more it can fight off pests and disease, even when stressed due to heat, drought and poor soil. Inspect your garden often for early warning signs.
Natural defense
Plants have special chemicals that make them distasteful to bugs. When they are weakened by stress, the chemical levels are reduced and the plant becomes vulnerable. Often bugs attack the weakest plant of a group and never spread to the healthy ones because their chemicals are more concentrated. These chemicals are so effective they are extracted for botanical pesticides such as pyrethrum, which is derived from a species of chrysanthemum.
