Sunlight shines through trees in the Longenecker Horticultural Gardens at the University of Wisconsin-Madison Arboretum during spring on May 3, 2020. (Photo by Bryce Richter / UW-Madison)

The UW-Madison’s Extension Horticulture Program provide research-based horticulture information to Wisconsinites so they can make gardening decisions that keep their plants healthy while protecting the environment. We provide research- and evidence-based horticulture management education, resources and decision-making tools to home gardeners and commercial horticulture practitioners.

UW-Madison, Division of Extension, Horticulture Program serves the people of Wisconsin through our dedicated staff throughout the state. If you have a home gardening question please use our Ask a Gardening Question form.

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