The Four Seasons Gardening Webinar Series is one of the most popular horticulture programs offered by the Illinois Extension Horticulture Team. Each season, the team hosts three live webinars delivered via Zoom. Webinars are free but registration is required and space is limited. Please click on the topics below to register. Webinars are held on select Tuesdays at 1:30 p.m. Central Daylight Time.

If you need live captioning support to participate in any of these programs, please contact Andrew Holsinger at It is strongly encouraged to submit your request at least two weeks before the program begins.

Summer Schedule

Living Carpets: Ground Covers
July 14, 2020 at 1:30 p.m. Central Daylight Time

If I see another ground cover of daylilies mixed with mulch or grassy junipers, I am going to scream. Unlike daylilies, ground covers should be ornamental year-round, and low maintenance once established. Learn some new options for ground cover, including plants that you may not think of, to create these living carpets. These types of plants will be highlighted throughout the talk with University of Illinois Extension Horticulture Educator, Kelly Allsup.

Adventures in Edible Landscaping
August 11, 2020 at 1:30 p.m. Central Daylight Time

This webinar will explore the use of plants that are not only visually attractive, but also edible. Join Horticulture Educator, Austin Little and look at the benefits of introducing edible plants into the landscape and look at the unique challenges of edible plants. In addition, we will look at some great options for different types of edible plants and talk about some design basics when adding edibles to your landscape.

Fall Schedule - Registration opens this summer

Hardscaping Basics for Patios and Retaining Walls: Chris Enroth
September 15, 2020 at 1:30 p.m. Central Time

Do you have a vision of a retaining wall or patio in your yard, but aren’t quite sure where to start? Hardscape installation can cost thousands of dollars and many homeowners are turning to DIY to save some money. However, there is a lot to know about proper hardscape installation methods. Join University of Illinois Extension Horticulture Educator, Chris Enroth, as he talks about the basics of modular patio paver and retaining wall installation. 

Creating a Bottle Terrarium: Bruce Black
October 13, 2020 at 1:30 p.m. Central Time

Explore the enclosed world of bottle terrariums, self-contained plant environments within glass. Join Horticulture Educator, Bruce J. Black, to explore terrariums, their needs and how to create a bottle version of a terrarium.

History of Forest Pest Outbreaks in North America: Ryan Pankau
November 17, 2020 at 1:30 p.m. Central Time

North America has a history of exotic pests that extirpate individual tree species, with Emerald Ash Borer serving as our modern example. In our current, ever-globalizing society there is significant risk for future outbreaks that may impact our trees from the urban forest to our woodlands. Join University of Illinois Extension Horticulture Educator Ryan Pankau as he examines past outbreaks on our continent to compare what we have learned historically with the current pests threatening our native trees.

Webinar Archives

Each program is recorded and uploaded to Illinois Extension Horticulture YouTube channel. To allow time for closed captioning, please check the YouTube channel 30 days after the scheduled program.