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Upcoming Programs

200px-Adobe_PDF_Icon 2014 Fall Plant Care Workshops

September 18 – Dividing Perennials

Fall is a great time to divide perennials. This is a hands-on workshop designed to learn and practice dividing common perennials. We will explore the ways to tell a plant needs dividing and best practices for overall plant health. Please bring along gloves and wear closed toe shoes.  

September 25 – Tree & Shrub Pruning Workshop

The focus of this workshop is to learn why, when, what, and how to prune common landscape shrubs and trees. Discover the art and science behind pruning and the effects that pruning has on your plants. Find out how to properly care for pruning tools, pruning tool safety, and methods for keeping your tools clean. From basic pruning techniques to advanced tips on pruning, this workshop is a sure way to improve your pruning skills. Please dress for the weather! We will be outside for hands-on learning for the second half of the workshop, rain or shine! Participants must bring their own pruning tools & gloves! Pruning tools will not be supplied. Tools you may choose to bring: Hand pruners, Loppers, Folding handsaw, Gloves

Both workshops will be held at 4:00 p.m. in Room 214 of the Walworth County Government Center, 100 W. Walworth St., Elkhorn 
Cost: $5 per class 

Brown Evergreens?

This past winter was particularly hard on evergreen trees and shrubs.  This spring it’s been a common sight to see evergreens with brown needles which is a sign of Winter Burn.  The University of Minnesota has a great article to help learn more about Winter Burn and how to deal with plants that are effected by it.

Emerald Ash Borer

Emerald Ash Borer, a serious pest of ash trees has been confirmed Walworth County and several other counties of Southeast Wisconsin. Homeowners can take steps to provide their trees with a measure of security but it must be done proactively.  From determining if you have an ash tree, to advising on what to replace one with, the UW-Extension and Master Gardener Volunteers are here to help. Take a look at our Ash Tree Identification publication for help in identifying your tree.  Now the question is what should homeowners do? Please see Homeowner Guide to Emerald Ash Borer Insecticide Treatments and Is My Ash Tree Worth Treating for Emerald Ash Borer?.

If you have any questions about the Emerald Ash Borer, identifying your ash tree, or to receive a fact sheet with this information, please call the Walworth County UW-Extension office at (262)741-4951 or email  You can also visit



Have a gardening question?

Contact Chrissy Wen, your Horticulture Educator with UW Cooperative Extension in Walworth County.

Chrissy Wen
Horticulture Educator
Walworth County UW-Extension
100 W. Walworth Street
P.O. Box 1001
Elkhorn, WI 53121
Phone: 262-741-4958
Fax: 262-741-4955

Please stop by the office, call, or email with any horticulture related questions!

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