Provides information about the biology of common pests and diseases that affect horticultural crops and ways to control them. Discusses the identification and classification of common weeds and lists appropriate control measures. Topics covered include insects and allied pests, snails and slugs, vertebrate pests, nematode diseases, viruses, bacterial diseases, fungal diseases, parasitic flowering plants and weeds. Includes references, review questions, suggestions for further reading, glossary and index.