In the Armstrong greenhouse, the Coccus longulus scale is a prevalent insect problem on the plant Begonia ‘Richmondensis’. Inside the greenhouse there are several additional types of begonias with very similar characteristics to Richmondensis. However, none of these begonias are infested by C. longulus, despite having similar leaf tissue toughness, trichome densities, and experiencing the same environmental conditions such as humidity and light. This project examined whether differences in the c