A: Discovering these orchid problems early is key to curing the diseases of orchids. Keep good environmental conditions such as light intensity,temperature, ventilation and humidity.Use the proper soil type for your orchids as well. These basic guidelines will help you avoid many common orchid problems. Provide proper amounts of sunlight and maintain proper temperatures. Most orchids should get no more than four hours of sunlight a day. High temperatures can stop your orchids from blooming. Try to locate your plant where it will get just the right amount of sunlight or alternately provide light with grow lights. Learn to water your orchids correctly. Too much water can cause "Basal Rot". Likewise, too little water can cause "Fusarium wilt". If you get viral disease you may have to use fungicides. Rotate the type of fungicides used so the plant does not develop a resistance to it. You may also consider adding insects to control pest infestations. These are some basic guidelines that will help you avoid many of the common orchid problems, it is always good to consult an expert if you are unsure what is causing the problem.