This diseases and disorders chapter from the Extension Gardener Handbook discusses how to keep plants healthy through cultural practices. The types of plant pathogens including: fungi, bacteria, nematodes, viruses, and parasitic plants are discussed. Strategies are reviewed for managing diseases using an integrated pest management approach.
This diagnostic chapter of the Extension Gardener handbook outlines a 10-step guide to diagnosing plant problems. It also helps gardeners recognize which plant symptoms are normal and which can be problematic, and how to determine if the problem is biotic or abiotic.