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.

Spongy Moth Caterpillar-photo credit Bill McNee WI DNR

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.

Ask A Tree/Forest Question

*Please, Do NOT bring insects and/or plant samples to the office

WI Horticulture Resources

House plants in various containers

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.

shovel in garden soil

The website has instructions on taking samples, sending your sample off and the fees for each item.

WI Master Gardener Program

Master Gardener watering garden

The Wisconsin Extension Master Gardener Program supports a network of individuals dedicated to horticulture education, service, and lifelong learning.

Food Systems

Raw vegetables in a basket

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

    grafting Fruit Tree Grafting_April 23 2020   (Pdf, 33 pages, 2,189 KB)
  lettuce Clay Soil Gardening_April 30 2020 (Pdf, 40 pages, 6,407 KB)
  tomatoes Growing Awesome Tomatoes_May 7 2020    (PDF, 38 pages, 5,729 KB)
  pruning pink apple blossoms 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

Extension Bayfield County address

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

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