Kwesi Joseph

Urban Gardens Specialist

cell 718-809-2781
email Kwesi

Areas of Interest
project management, garden design, rock dust, biochar, soil health and plant nutrient density

Kwesi Joseph helps communities across New York City's five boroughs grow healthy food and care for urban green spaces. With Cornell Cooperative Extension's Harvest New York team, he works with community gardeners, urban farmers, and educators to improve soil health, increase plant nutrient density, and tackle challenges in vegetable production.

Kwesi works with natural processes like soil remineralization, no-till gardening, and carbon sequestration. He conducted a trial using rock dust to boost soil fertility and carbon sequestration, and is developing a biochar project with Cornell faculty and community gardeners.

A Master Composter since 2016, Kwesi spent six years as the Compost Manager at the Hattie Carthan Community Garden in Brooklyn, where he ran workshops, processed food scraps, and trained volunteers. He has partnered with the Action Research Collaborative (ARC), Cornell University Cooperative Extension (CUCE), the College of Agriculture and Life Sciences (CALS), Cornell's College of Architecture, Art, and Planning (AAP), and the Expanded Food and Nutrition Education Program (EFNEP) to expand gardening, nutrition education, and land use projects for families in transitional housing and underserved neighborhoods.

His work has appeared on NY1, The Weather Channel, and WNYC Radio, and been covered by Gothamist and the Queens Ledger.

Kwesi holds a B.S. in Geology from York College, The City University of New York, an Executive MBA from Cornell's Johnson School of Business, and a Master Composter Certificate from the Brooklyn Botanic Garden Compost Project.

Intercropping with Mushrooms

October 14, 2025
4:00 pm - 6:00 pm
Poughkeepsie, NY

Join us for an afternoon of hands-on learning at Pershing Community Farm, led by Urban Agriculture Specialist Yolanda Gonzalez.

2025 Agroforestry Field Day Series -- Agroforestry Implementation and Management

October 23, 2025
3:00 PM - 5:00 PM
Highland, NY

Interested in incorporating agroforestry practices into your farm? Join us for a series of workshops co-hosted by CCE Ulster, Orange, and Harvest NY with Mastwood Farms, Black Creek Farm and Nursery and Scenic Hudson. 

On October 23, we'll return to Erik Schellenberg's farm, Black Creek Farm and Nursery, for a Fall tour of their agroforestry plantings. Erik will talk about harvesting and managing plantings while we see some seasonal crops and installations of different ages and types. There will be time for questions and discussion as we wrap up the series. covered.

Soil Health 101 for Community Gardens -- A Bilingual Workshop

October 24, 2025
11:00 AM - 3:00 PM
Staten Island, NY

Join Urban Agriculture Specialists, Karen Guzman and Yolanda Gonzalez, as they discuss the importance of soil health and testing your soil as you prepare for the incoming growing season. They will go into strategies for best practices when it comes to soil health management and highlight the current soil testing program through NYSDAM and CCE. This workshop will be in both Spanish and English.

New Produce Auctions in NYS!

With the opening of the new Augusta Produce Auction on August 19th, New York State now has 11 produce auctions! See the new map of produce auction locations across the state and contact information.

New York Urban Farms Sustainable Pest Management Fact Sheet Series

Cornell Cooperative Extension has partnered with dozens of urban farms across New York State to demonstrate and evaluate sustainable pest management strategies. Together with farmers, we found success using control methods that prevent or reduce crop losses through exclusion strategies, crop timing, host resistance, the introduction of beneficial organisms, and more. Regardless of management strategy used, common requirements for success include a knowledge of the pest and disease complex, preventative deployment and commitment to the process. The New York Urban Farms Sustainable Pest Management Fact Sheet Series includes case studies highlighting pest management techniques that New York urban farms have found valuable.