you need to be a bit more spacific!! what types of plants and what one the bug was on!!! could be mites! potatoe bugs, who knows!!!!
Excellent question. You need to get an insect field guide and a couple of good books on natural insect/pest control.
I really like the Petersen guides and Audubon guides. I also like the book The Organic Gardener’s handbook of Natural insect and Disease Control by Ellis and Bradley.
Organic gardening magazine is also a good resource is an excellent place to find books on organic farming gardening. the book sellers are long time deep organic growers and sell only the best books on the subject and can answer most of your questions.
