Ten questions to ask to diagnose a plant problem

http://extension.oregonstate.edu/gardening/ten-questions-ask-diagnose-plant-problem-0
CORVALLIS, Ore. – You may immediately want to know "What's wrong with my plant?" when your tomatoes or azaleas appear wan.
But don't stop there. Ask a series of systematic questions to diagnose and effectively address the cause of the malady, advises Neil Bell, horticulturist with the Oregon State University Extension Service......For more information, go online to the PNW Plant Disease Management Handbook and the PNW Insect Management Handbook.