This publication, "Capitalizing on experiences in community seed production in Europe and Central Asia: Review report of implementation, constraints, and opportunities" examines the concept of community seed production, its link to different types of seed systems, existing challenges, and role of smallholders in community seeds.Key messages: Community seed production has the potential to enhance the positive impacts of both the formal and informal seed systems through better coordinated efforts. Smallholders play an important role in preservation of agrobiodiversity, and namely preservation of traditional crops and local varieties.? Recognition of community seeds and smallholders can help to overcome current issues in seed systems, making the later more sustainable and resilient. Community seed production supports sustainable agrifood systems, and complements foraging wild plants, permaculture and agroecology. Modern interest in community seed production is fuelled by concerns about agrobiodiversity loss and resilience of seed and agriculture systems.This work provides examples of community seed production initiatives, ranging from community seed banks to large seed networks, and explores both the constraints and opportunities in adopting community seed production at a larger scale in Europe and Central Asia.Ultimately, this publication presents an overview of the implementation of community seed production activities in the region, as well as good practices from selected projects which reflect the complex character and diversity of initiatives supporting existing seed systems.