We collected surveys from 94 greenhouse and nursery growers in three northeastern states to examine factors influencing integrated pest management (IPM] adoption. We constructed three alternative dependent variables describing the extent of IPM adoption and employed discrete choice models to identify factors that affect adoption. We find that operations with more full-time workers are more likely to adopt IPM. Additionally, greenhouse/nursery growers that rank pests as a serious problem are likely to use a wider array of IPM practices. The reliability of IPM practices is critical for adoption. Our analysis highlights differences between self-reported and objective IPM adoption measures.