Leeks have become an important component of vegetable production in Australia with the area of production increasing in most states. Although leeks belong to the Allium family and are likely to be prone to similar diseases that attack onions, data was scarce on the main disease problems in Australia. This item contains key sections from the final report of project VG00013, which included a survey of fungal, bacterial and viral diseases as well as disorders and organisms affecting commercial crops in Australia. Integrated management strategies to control these problems were investigated and a list of recommendations was developed. Fusarium foot rot and bacterial blight were found to be the two most economically important diseases of leeks in Australia. Two of the chemicals mentioned in the report were not registered or permitted for use on leeks at the time of publication (2005).