The invasive pest, fall armyworm (FAW) was confirmed to be in Ghana in 2016. Stakeholders, including CABI, worked to support the development of a national FAW management plan. A review of the management plan implementation was undertaken using outcome harvesting, a Sprockler inquiry and key informant interviews. Results showed evidence of stakeholder collaboration, leading to increased public awareness of FAW and related management practices, and more coordinated research into low-risk management options. Key factors for the success of the FAW response were: establishment of the multidisciplinary taskforce, with common goals and ownership; mobilization of financial, human and material resources at national and district levels; effective coordination and communication, limiting duplication of efforts by different actors; farmer sensitization to identify and manage FAW and other pests. Steps to ensure future preparedness include: implementation of the National Invasive Species Strategy and Action Plan (NISSAP); establishment of a standing taskforce and emergency fund to address new pest outbreaks; improved monitoring and surveillance especially at borders and ports of entry; strengthened research capacity especially in pest risk analyses; and development of emergency response guidelines for future outbreaks.