Managing Spotted Lanternflies
This destructive, invasive insect poses a threat to Delaware's agricultural economy.
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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Demystifying Parents’ Role in the 4-H Program
May 19, 2025 | Written by Kendra Harrold, Sussex County Director of 4H Afterschool ProgramsA frequent source of confusion for parents regarding 4-H is recognizing the program's wide-ranging opportunities and its emphasis on experiential learning instead of just academic results. Many parents first view 4-H as primarily centered on agriculture or animal-related projects, but the program actually includes a vast array of activities such as science, health, civic responsibility, and leadership skills. -
Trapezing Trees
May 16, 2025 | Article and Video by Michele Walfred, Photos by Michele Walfred, Jeremy Wayman, Tracy WoottenWhen people need a large tree removed or pruned on their property, they often encounter sticker shock. It’s expensive, and therefore tempting, to take on the towering tree task themselves. Stop. It is not a DIY project. Put away the ladder and call in a pro! Scaling up a towering oak, maple, sycamore, or elm tree and doing so safely, and removing or pruning without incident, is an art form best left to the experts. -
On your marks, get set, Trellis!
May 12, 2025 | Written by: Lyndsie Mikkelsen -Fruit and Vegetable Extension Agent, Reviewed by: Emmalea Ernest – Fruit and Vegetable SpecialistPole lima beans are a local staple for any Delawarean. If you want to get in on the action, now is the time to get your trellises ready (Delaware residency not required)! Pole limas have a long growing season, making it important to get them planted between mid-May and early June. A few popular varieties to grow include Dr. Martin, King of the Garden, Big Mama, and Christmas Lima. Keep in mind some of these varieties can grow 16-20 feet vines, which is why it is important to have trellising in place. -
Things to do in May
May 06, 2025 | Written by: Sue Barton, Plant Diagnostician* Plant annuals in mid-May. This is after the last potential frost date. * Plant your summer containers with a combination of woody plants, annuals and perennials.
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