Out of Office

UD Extension staff to return 11/30/20


Browse available resources.
Watch past Extension courses online!
Chat with a DE Master Gardener.
You have questions. We have answers!
Contact UD Extension staff.

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 classes and Master Naturalist courses to 4-H youth clubs and programs that support local agriculture — UD Cooperative Extension has something for everyone.

COVID-19: We are facing this challenge together

Together We Make the First State Great: youtube.com/watch?v=AYfd9vhiAjo

As the current coronavirus (COVID-19) situation continues to rapidly evolve our goal, as your local Cooperative Extension service, is to assist you in protecting the health and safety of your families, friends and community. 


Trending issues

  • The Porter Gang Club posing for a photo (left) (pre-COVID) and working on a project (right).

    November Spotlight: Porter Gang 4-H Club

    November 20, 2020 | Written by The Porter Gang 4-H Club
    Porter Gang has been a general interest 4-H club in New Castle County since 1965. It was founded by Mr. and Mrs. Cliff Moore, who lived on Porter Road in Bear-hence, the name "Porter Gang."
  • Embracing turfgrass research to increase fertilizer efficiency

    November 19, 2020 | Written by John Emerson (Extension Agent - Turfgrass Nutrient Management) and Sydney Riggi (Extension Associate - Nutrient Management)
    Applying nutrients in the form of fertilizer to turfgrass is a key component to having healthy turf. The goal of any fertilizer application is for the plant to take up the fertilizer and minimize the loss of nutrients, specifically nitrogen (N) and phosphorus (P), to ground and surface water. In many Mid-Atlantic States, there are regulations that limit fertilizer applications during the winter months.
  • Field testing new integrated weed management strategies

    November 13, 2020 | Written by Kay Ledbetter from AgriLife Today
    Mark VanGessel, Ph.D., from University of Delaware is part of a new study lead by Texas A&M AgriLife that will research how well several new weed management strategies can help reduce weeds and mitigate the increasing occurrence of herbicide resistance.
  • Giving thanks for our 4-H volunteers

    November 13, 2020 | Written by Ernie Lopez
    With just a few more weeks in 2020, it won’t be long till Delaware 4-H turns the page towards a new and exciting year. While the current year has had its challenges, the meaningful work and leadership of our volunteers proved a powerful testament to the strength of 4-H and the value of our four essential elements: mastery, generosity, independence and belonging.
  • Friends of Extension

    November 10, 2020 | Written by Dante LaPenta
    The Friends of Extension Awards were presented during a virtual ceremony on Oct. 29, 2020. University of Delaware Cooperative Extension honored Joe Sebastiani, the Delaware 4-H Foundation, Delaware Division of Libraries and the Ritter family.
Cover art for Extension302 podcast featuring an ear of corn as a podcast microphone

Extension on the air!

Scientifically-based conversation on topics ranging from agricultural sciences to nutrition, mindfulness, financial literacy and more! 

eXtension logo

Upcoming Events


Eight "got your back" supporters stand together.

We've got your back!

Delaware is a small state that is big in agriculture. We know our farmers give so much of themselves to keep the industry strong. We want you to know, there is help available. We want you to know, we’ve got your back.


Extension blogs

Join us on social media