ABSTRACT
Understanding the mechanisms by which geranium plants modulate insects will assist in the design of pest control strategies. In natural conditions wild geraniums are not often reported to suffer greatly from herbivory, the main problems occur when plants are cultivated in high densities under glass. Under these conditions geraniums vary in their susceptibility, especially to pests such as whitefly and mites. Mites and whitefly appear to have a preference for Regals, Angels and some scented varieties. This chapter outlines our knowledge about some of the pests of geraniums and it also provides an overview of pest resistant mechanisms in geraniums and how geraniums could be used in the control of insect pests.
