Meet the Jury for the Green Walls Category

Founder of Indian Green Infrastructure Network (IGIN)

Hema Kumar has pioneered the concept of landscape engineering in India. For more than two decades he has been involved in designing and implementing more than 1500 projects.

Founder and publisher of Greenroofs.com, principal of Sky Gardens Studio

Linda S. Velazquez, ASLA, LEED AP, GRP is the founder & publisher of Greenroofs.com (1999). She presents extensively about green roofs and green living architecture, including the yearly “Top 10 List of Hot Trends in Greenroof & Greenwall Design” (2007). She holds a Bachelor of landscape Architecture from the University of Georgia (2000), and has been published in numerous books and journals. She is also a principal of Sky Gardens Studio (2004). Greenroofs.com is a dynamic website, online media company & comprehensive resource with a vibrant social network Connecting the Planet + Living Architecture.

CEO of CityArc, lecturer

Kilian Lingen has been responsible for the management of CityArc – Institute for Urban Nature as a CEO since it was founded in 2022. Previously, he worked as a lecturer at the TU Darmstadt, as a research assistant at the HfWU Nürtingen-Geislingen under Prof. Dr. Ing. Nicole Pfose, as a project manager at a company for facade greening and in the conception of building greening. In 2025, he was appointed as a lecturer at HfWU Nürtingen-Geislingen. He studied biology at the TU Darmstadt, specializing in botany, plant physiology and vegetation ecology.

Landscape architect and landscape ecologist, WGIN President

Manfred Koehler is a landscape architect and landscape ecologist with many years of experience in green roofs, living wall-research and indoor greening. As one of the founders of WGIN and president since 2008 he welcomes projects for the WGIN Awards in the green walls category. This award is a milestone in the history of our association and will be continued many years in the future.

President of CALLA Group, founding member of PSDZ, co-chair of EILO

Balbina Gryczyńska is a president of the family company CALLA Group, which has been active in landscape architecture and indoor greenery for more than 30 years. She is also a founding member of the PSDZ (Polish Green Roofs Association) and delegate of this association in the EFB (European Federation Green Roofs and Walls) structures, co-chair of EILO (European Interior Landscaping Organisation). She is an advocate of "small steps" and stable, sustainable development. Privately a sports enthusiast.