I've been growing my own marijuana plants and one of them is this kind of strain http://www.ilovegrowingmarijuana.com/alpha-blue/ for almost 3 years now and this pesty insects and mites have been putting me in a trouble some situation. Over 250 insects and mites associated with cannabis. Spidermites have the most harmful economic impact on cannabis. Aphids and Whiteflies come in second and third. These pests vector fungi, and viruses.Reportedly there are well over two hundred and fifty insects and mites associated with Cannabis. I think it is best to talk about those that have the most economic impact.