To ensure food security in Cameroon, a study was planned to investigate the suitability of growing cabbage in the central region of Yaoundé. To this end, a field experiment was conducted over two climatic periods (dry and wet) to determine the entomofauna of this crop, with the aim of later considering agroecological methods of pest control. A weekly inventory was carried out, and the adult and juvenile stages of insects found in the field were recorded. This revealed that 55 species belonging to eight orders had colonised the cabbage. These included Hemiptera, Lepidoptera, Coleoptera, Diptera, Orthoptera, Hymenoptera, Dictyoptera and Arachnida. There was a significant difference in the abundance of these insects between the wet and dry seasons (P=0.000). Their activity on the plant enabled eight trophic groups to be distinguished, the most prevalent of which were piercing-sucking insects (80%) and leaf-eating insects (15%), which proved particularly devastating during the dry season. The recurrent and aggressive species Plutella xylostella, Spodoptera exegua and Spodoptera littoralis, which belong to the order Lepidoptera, had respective incidences of 80%, 76% and 62%. These three species alone were responsible for the destruction of almost the entire field. The results obtained during this study could inform the development of strategies to protect this plant.