The cotton monocultural system in most of the production areas in Australia strongly discriminates against natural enemies and favours the development of pest outbreaks. Pest outbreaks in monocultural systems occur because insect predators and parasitoids usually have more complex food requirements than Helicoverpa and most other phytophagous insects. The latter usually mate and oviposit without any feeding, relying only on reserves transferred from their larval food whereas predatory insects and parasitoids require different sources of food in larval and adult stages to develop and survive through the season. Thus pests like Helicoverpa can rapidly infest crops through migration and lay their eggs with little opposition from natural enemies. To solve this problem the cotton system should be diversified by interplanting cotton with other crops. The alternate crop could serve as a refuge to beneficial insects. Crops like safflower, sunflower, sorghum, corn, tomato and Lucerne have been studied for the past 4 years and Lucerne was found to be suited for the cotton production system. We report here studies to integrate lucerne into the Envirofeast IPM program to serve as a refuge for beneficial insects.