Illinois Extension has a vast collection of resources addressing horticultural interests across Illinois. We recognize that home and commercial horticulturalists each have unique needs, so we've cultivated a set of resources designed to address their top concerns. These collections represent the topic areas where we usually get the most questions, but our expertise covers everything from trees to tomatoes to tulips. Contact Nikki Keltner or Alex Burbach with your questions.

Master Gardener Helpline

Have a gardening or horticulture question? Call our Master Gardener Helpline. An Illinois Extension Master Gardener will answer your questions at NO COST!

  • Jo Daviess County: (815) 858-2273
  • Winnebago County: (815) 986-4357
  • Stephenson County: (815) 235-4125


Submit a question using our Master Gardener Helpline on-line form.

We look forward to assisting you!


Horticulture is a broad and diverse area of study. We've organized our resources into several topical themes to help you dig more deeply into your areas of interest. From educational curriculum units to websites devoted to deeply exploring a single topic area, our resource collection represents best practices based on both proven and emerging research and the work of our professional education staff.


Gardening  -  Fruits and Vegetables  -  Flowers  -  Insects and Diseases  -  Composting  -  Landscaping  -  Fact Sheets

The University of Illinois Extension has an extensive library of recorded webinars posted on YOUTube. The channel can be found at: University of Illinois Extension YOUTube

Timely webinars of interest: 

Gardening for the Birds

Creating a Living Floral Arrangement