the soil, particularly if there are nearby Fritillaria which emerge earlier than Lilium. While Lilium and Fritillaria are affected, Hemerocallis is not. All types of lily may be affected, but while Asiatic lilies are the most vulnerable, some Oriental lilies may be more resistant. Resistant types include Lilium henryi 'Madame Butterfly', Lilium speciosum 'Uchida', and Lilium 'Black Beauty'. Other garden plants affected include Convallaria majalis, Polygonatum, potato (Solanum tuberosum), flowering tobacco (Nicotiana), hollyhock (Alcea) and Hosta. Pest impact Fritillaria and Lilium specimens in Canadian gardens, particularly around Halifax, Nova Scotia are significantly affected by the lily leaf beetle. A garden in Waverley, Nova Scotia has reported decline of lily species and cultivars from 50 in 1996 to only one in 2006. Control The most surefire strategy for preventing infestation by any pest is to avoid planting susceptible plants in the first place, with lily beetle this necessitates avoiding growing so many desirable cultivars of Lilium, that other strategies may be preferred. Regular handpicking and crushing of eggs, larvae and adults is effective if somewhat laborious. Domestic insecticides registered for general leaf beetle control containing carbaryl, methoxychlor, malathion and rotenone can prove useful in controlling populations. However, malathion and carbaryl, effective on adults and larvae, are toxic to bees and other insects, respectively. Products based on neem extracts are useful in killing very young larvae and repelling adults without comparable harm to other insects, although this option is perhaps less effective than handpicking. Neem products should be applied every 5 to 7 days after egg hatch. Thiacloprid is also effective. Floating row cover has been effective in preventing the adults from feeding and laying eggs in the spring. Biological control In Europe, total parasitism rate in the last instar stage averages about 90% on wild Lilium martagon, 75% in gardens and 60% in cultivated lily fields. Most lily leaf beetle parasitoids are wasps that lay eggs inside the host and effectively kill all infected individuals. Diaparsis jucunda (Ichneumonidae: Tersilochinae), dominates over 90% of the parasitoid infections in lily leaf beetle. However, in gardens and commercial fields, Tetrastichus setifer (Eulophidae: Tetrastichinae) and Lemophagus pulcher (Eulophidae: Campopleginae) become the dominant parasitoids in the later season. There are no natural predators or parasites of lily leaf beetle in North America. In 1996, University of Rhode Island began testing the effectiveness of biological control of lily leaf beetle using six natural parasitoids from Europe. CAB