Horticulture
The University of Wisconsin-Madison Division of Extension Agriculture Institute has moved ahead with changes that allocates their resources in a different way than in the past. These changes will allow you and our office the ability to interact with specialists throughout the University of Wisconsin-Madison Division of Extension system and with other agencies in Wisconsin.
They’re b-a-a-a-a-ck! Those tiny little caterpillars are spongy moth caterpillars! Find them and destroy them! Northern WI is currently seeing an influx of bristly, hairy caterpillars. What are they and what can you do?
Gardening questions and tree/forest health questions should now be asked through the forms on the following links.
*Please, Do NOT bring insects and/or plant samples to the office.
Please, instead take a high quality photo of the problem to submit.
*Please, Do NOT bring insects and/or plant samples to the office.
WI Horticulture Resources
Check out our free online programs, activities you can do at home, pollinator resources and the latest Horticulture News. Including information on whether to rake or not, extending your growing season and more.
The website has instructions on taking samples, sending your sample off and the fees for each item.
WI Master Gardener Program
The Wisconsin Extension Master Gardener Program supports a network of individuals dedicated to horticulture education, service, and lifelong learning.
Food Systems
Learn tips for running and growing a successful food business from specialists and entrepreneurs! This no-cost series of online trainings is for food entrepreneurs and farm-based food businesses.
Research Bulletins & Publications
Powdery Mildew
Powdery mildews are diseases that occur on the above-ground parts (especially the leaves) of many deciduous trees and shrubs, as well as herbaceous ornamental plants, indoor houseplants, and many agricultural crops. Conifers are not affected by these diseases.
Tomato Disorders
Blossom end rot, blotchy ripening, catfacing, growth cracks, puffiness, and sunscald are discussed in this publication
2020 Virtual Gardening Workshop
 Fruit Tree Grafting_April 23 2020 (Pdf, 33 pages, 2,189 KB) |
 Clay Soil Gardening_April 30 2020 (Pdf, 40 pages, 6,407 KB) |
 Growing Awesome Tomatoes_May 7 2020 (PDF, 38 pages, 5,729 KB) |
 Managing Young Fruit Trees_May 14 2020 (PDF, 106 pages,13,327 KB) |
Cheq Bay Area Providers of Mulch, Compost & Topsoil
Ashland/Bayfield Counties Ag/Hort Newsletter
Other Horticulture Resources
Other Horticulture Resources
- University of Wisconsin – Madison – Department of Entomology Insect Diagnostic Lab
- Choosing the Right Landscape Plants – The Learning Store
- University of Wisconsin-Madison – Plant Disease and Diagnostic Clinic
- PBS – The Wisconsin Gardener – Public TV
- University of Wisconsin – Madison, Division of Extension – Wisconsin Native Plant Sources
- Wisconsin Department of Natural Resources
- Wisconsin Horticulture Calendar – Other events of interest
- University of Connecticut Plant Database
- Ohio State University Plant Dictionary
- USDA Plants Database
- Weed Science Society of America
- Wisconsin Phenological Society
Ask a Gardening Question
Looking for an expert to advise on your garden questions? Please fill out the form and attach relevant photographs concerning your garden issues. Your inquiry will be responded to by an Extension staff member or a Master Gardener Volunteer in your area. Thank you for visiting the Wisconsin Horticulture website.
(For out-of-state garden inquiries, please contact your state’s respective Extension office.)
Ask a Tree/Forest Health Question
University of Wisconsin-Madison Extension Bayfield County || Courthouse-117 E 5th Street, PO Box 218 || Washburn, WI 54891
711 for Wisconsin Relay (TDD)
Theresa LaChappelle, Office Manager || 715-373-3285 || Email
