Dane County Extension Horticulture
The Dane County Extension Horticulture program provides research-based gardening information, services, and resources to Dane County residents so they can keep their plants healthy while protecting the environment.
Register Now!
The following workshop(s) currently have open registration.
Seed-Starting 2026
Green Thumb Gardening Winter 2026
Local Horticulture Programs
Classes and Presentations
Offering online and in-person classes accessible to both the public and green industry professionals.
Calendar
The Horticulture calendar offers upcoming program details.
Ask a Gardening Question
Looking for expert advice on a lawn, landscape, or gardening issue? Fill out the form and attach photos showing your garden concern. A Wisconsin Extension Master Gardener or Extension staff will respond to your inquiry.
Dane County Extension Teaching Garden
The Teaching Garden is a public educational resource surrounding the Dane County Extension Office building.
Community Horticulture Programs
Dane County Tree Board, Tree Canopy Collaborative, and Heritage Oaks Project
The Dane County Tree Board is composed of members in different tree-related disciplines and
appointed by the County Executive to bring information and public education.
Master Gardeners
Master Gardener Program
Master Gardener Plant Sale
May 17, 2026
Ask a Gardening Question
Looking for expert advice on a lawn, landscape, or gardening issue? Fill out the form and attach photos showing your garden concern. A Wisconsin Extension Master Gardener or Extension staff will respond to your inquiry.
Further Resources & Lab Services
Lab Links
Gardening Publications
DNR website Info
Soil Testing
Other Links of Interest
Connect With Us
Meet the Educator
Horticulture Educator
608-224-3715
Lisa Johnson grew up in Madison’s southwest side. Her mother and grandfather were avid gardeners, and her love of plant life was encouraged by high-school biology teacher Marilyn Hanson.
Lisa earned her undergraduate degree in Horticulture at UW–Madison and worked at various local garden centers and nurseries before returning to the UW for a graduate degree in Agricultural Communications.
She started her Cooperative Extension career first in Milwaukee County before returning to Dane County. Lisa started the Teaching Garden at Dane County UWEX in 2004 as an outdoor classroom for master gardeners, children, and the general public.
When not gardening, she enjoys playing folk music on guitar, autoharp, and bowed psaltry and sharing quality time with her cats.
More in this Section
- Master Gardener Program
- Teaching Garden
- Green Thumb Gardening Classes
- The Annual Master Gardener Plant Sale
- The Garden Path
- Dane County Tree Board, Tree Canopy Collaborative, and Heritage Oaks Project
- Horticulture Classes, Public Presentations, and Videos
- Horticulture Calendar
- Presentations & Outreach