With the introduction of Transgenic Bollgard II cotton Australian populations of green mirid have required targeted insecticidal control, which may select for insecticide resistance in this pest. Unfortunately, no methods are available in Australia to detect resistance or to establish the baseline data used to confirm resistance. To achieve that a simple method is required to culture and maintain a reference strain(s) of mirids. Here we describe a method to breed and culture green mirids, which is a first step toward development of a resistance monitoring program