Welcome to UD Cooperative Extension
In 1869, the University of Delaware (UD) College of Agriculture and Natural Resources was established as the state’s land-grant university with a mission consisting of three elements: teaching, research and “extension”.
Cooperative Extension fulfills the third part of this mission: bringing knowledge to the people of Delaware. Today, we offer university knowledge, research and resources — just for you! You have questions.
We have expert answers. From nutrition , Master Naturalist , Master Gardeners to 4-H youth clubs and programs that support local agriculture — UD Cooperative Extension has something for everyone!
Make a DIFFerence
Getting involved with UD Cooperative Extension is an excellent way to support and improve your Delaware community. Whether you're volunteering as a 4-H Adult Leader or donating to supporting an Extension Scholar, your local Master Gardener program, UD Cooperative Extension is grateful to have your involvement!
AGENTS FOR CHANGE
Each year, impact statements summarize the accomplishments of our educational efforts! The latest impact statements are available in both text and infographic formats.
Trending Stories
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Harvesting sweet corn
September 10, 2025 | Written by Katie Peikes | Photo courtesy of David OwensDelaware farmers harvest their sweet corn from the end of June to early October. University of Delaware Cooperative Extension is a huge resource to sweet corn farmers, assisting them with questions like what varieties of sweet corn to plant and how they can deal with insect pressure to their corn crop. -
Reading Soil Tests for Coastal Salinity
September 08, 2025 | Written by Jarrod Miller, Agronomy Extension SpecialistMany nutrients in soil exist as salts, soluble and available for plant uptake. But when salts accumulate in excess, crop growth can decline. With more frequent surface flooding in coastal fields and communities (Figure 1), it is increasingly important to interpret soil tests correctly. These tests can help guide management decisions, including soil amendments and crop selection. -
September is National Food Safety Education Month
September 03, 2025 | Written by: Adrienne Shearer, PhDFoodborne illness occurs when food is contaminated with pathogens (bacteria, viruses, parasites) and/or toxins. Pathogens are shed in feces and vomitus and can spread to others if personal hygiene is inadequate (fecal-oral transmission). -
Sprouting Cities: 2025’s Best Cities for Urban Gardening
August 20, 2025 | Written by Sav Maive (Lawn Starter)Where can urban gardeners grow a bountiful harvest? To find out, LawnStarter ranked 2025’s Best Cities for Urban Gardening, and continue reading for a Q&A with UD's own expert, Sue Barton!
Additional information: Office Locations & Staff Directory | Civil Rights Statements | Annual Impact Statements
Areas of impact
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