Willow Technologies is a material research and building technology practice that has been selected as part of ArchDaily's 2023 Best New Practices. Founded by Ghanaian-Filipino designer and architectural scientist Mae-Ling Lokko, it operates in the gap between research, development, and diffusion of bio-based building materials. Working with agro-waste and bio-based materials usually incurs technical questions regarding scalability, industrial production, standardization, fireproofing, and mechanical strength. Exploring this data is where Willow Technologies situates itself, but peculiarly through the lens of developing regions in West Africa. Through comprehensive works with coconuts, moringa, rice, and other indigenous crops, Lokko’s practice has been able to investigate and catalog the material character of various crops, their possible by-products, local transformation techniques, and the prospect and challenges of scalability as building materials.