A gardener who knows the most likely pests and diseases for each crop will find it easy to prevent or intervene quickly when problems appear.
Learn about the plants being grown. Know what is normal and what might become a problem. Specific plants are vulnerable to specific pests. For example, squash often get vine borers. Broccoli, collards, and cabbages get cabbage loopers. And melons are prone to fungus and other diseases. A gardener who knows the most likely pests and diseases for each crop will find it easy to prevent or intervene quickly when problems appear.