2022 Green Thumb Gardening Classes

The Green Thumb Gardening series will give you the practical knowledge to keep your home garden thriving! University of Wisconsin-Madison Department of Extension specialists and local horticulture experts will provide in-depth and accessible information for everyone from the novice to the experienced gardener. In 2022, our class offerings include a Winter Vegetable Gardening Series that will be online only, and a Spring and Summer series of classes that will be dual audience (some participants onsite and others online). You can register for classes as a package for a slight discount, or choose selected classes for a slightly higher cost. In cases of financial need, a limited number of scholarships are available. Contact Chip Thompson Thompson.charles@countyofdane.com for more information.

Seats for the Spring and Summer sessions will be limited this year as the dual audience format is a pilot program designed to provide greater access to the community while maintaining the high standards Green Thumb is known for. In accordance with County Guidelines we will have limited in-person seating due to COVID-19 classroom safety spacing regulations. Face-masks will be required for onsite participants. *Note that classes may begin as or remain in a virtual-only format depending on the status of the COVID-19 pandemic. Dual audience classes will feature some activities for both the online and onsite audiences. Onsite participants will have a number of activities outdoors (weather permitting) in the Dane County Extension Teaching Garden. These include a hands-on shrub pruning activity, demonstrations of deadheading and dividing various plants, and more. For more information on the Teaching Garden, Click Here. Note that Teaching Garden tours are available for clubs, non-profits, and business groups. Online activities for the online audience will be led by master gardener volunteers and will mirror the onsite activities as much as possible. Some activities in class will be the same for both audiences as well. Sessions will be recorded and available for class participants for personal use only (not for online sharing). Electronic handouts will also be provided for each session.

To learn more about classes and dates: Click here

For Registration: Click here

Green Thumb Gardening classes can also be used as a prerequisite for onboarding as a Master Gardener Volunteer (MGV). To learn more about the MGV program visit: https://dane.extension.wisc.edu/horticulture/training/

Winter 2021 Vegetable Gardening Series online Mondays 6:00-8:00 pm 

(ENDED 2022 Classes TBD)


  • January 11: Vegetable Garden Planning and Techniques
  • January 25: Seed Starting
  • February 1: Vegetable Diseases
  • February 8: Vegetable Insects
  • February 15: Cover Crops
  • February 22: Weed Management in Vegetable Gardens
  • March 1: Seed Saving/Harvesting and Storage

Winter Green Thumb Registration (coming soon)

Late Spring 2021 Series online Monday 6:00-8:00 pm

  • Diseases in the Garden: Part 1 and 2
  • May 24: Part 1- Fundamentals of Plant Diseases
  • May 26: Part 2 – Growing Healthy Plants: Basics In Plant Disease Management (26th)
  • June 7: Strawberries, Raspberries and Blueberries
  • June 9: Insects in the Garden
  • June 14: Healthy Houseplants
  • June 16: Fruit Tree Care



Mid-Summer 2021 Series online Monday 6:00-8:00 pm

  • June 21: Attracting and Managing Wildlife in the Garden
  • June 28: Weed ID and Management
  • July 12: Shade Perennials 
  • July 19: Perennials for Sun 
  • August 9: Growing and Designing With Annuals
  • August 16 : Lawn Care
  • August 4: Invasive Plants: ID and Management
  • August 11 : Native Plants and Pollinators 
  • August 18 : Rain Gardens: Planning, Construction and Plants
  • August 25: Small Native (and Nativar) Trees and Shrubs