Common Pests and Diseases

Common Pests and Diseases

In-Person Horticulture and Gardening Class
Dozens of small round bugs on a long leaf.
Carol Gross

Dates & Prices

September 15-October 13, 2026


Fee: $219

Fee for Innovators, Gardens Preferred, and Gardens Premium Members: $197

Fee includes admission to the Gardens the day your class is onsite.


This class is intended as an adult learning experience. Find out more about our Family Learning experiences.

Registrations may be cancelled up to two weeks before the event, and your registration fee, less a $30 processing fee, will be refunded. Please note that refunds are not available for programs moved to scheduled inclement weather dates.

To notify us of your cancellation, email us or call 610-388-5454.

Register by September 9, 2026

Gardens Preferred, Gardens Premium Members and Innovators save on Continuing Education Courses

A 10% discount on classes will be applied automatically at the time of checkout. 

Learn the key components of Integrated Pest Management (IPM) and how to apply each step effectively in your home garden. Through hands-on practice, you’ll develop personalized pest and disease diagnostic resources and gain skills to identify plant symptoms, assess problems, and create tailored action plans for successful garden care far into the future.  

Class Schedule 

Tuesday, September 15-October 13, 2026

Lectures 1 & 5
5:00 to 8:00 pm

Lectures 2-4
5:00 to 7:00 pm

Location

The Grove Studios 104 & 105

Instructor

Jackie Ricotta, Ph.D.

Originally from Rochester, NY, Jackie Ricotta graduated from Cornell University and went on to receive a master’s degree from North Carolina State University and a doctorate from the University of Illinois, all in Horticulture. Her specialization was vegetable production and pest control.

Since 2000, Dr. Ricotta has been a professor of horticulture at Delaware Valley University where she teaches courses in Botany, Sustainable Agriculture, Organic Food & Fiber, Integrated Pest Management, Commercial Vegetable Production, and Marketing of Horticultural Products. She was instrumental in bringing certified organic to the DelVal farm and helped start the Organic Farming Certificate Program (partnering with the Rodale Institute) as well as the Sustainable Agriculture Systems major. 

Dr. Ricotta received the DelVal distinguished faculty member award in 2012.  She is the co-editor of the textbook Organic Food, Farming and Culture, which was published by Bloomsbury in 2019, and a certified Forest Therapy Guide. In addition to being on the board of NOFA-NJ and the Friends of Spannocchia, Dr. Ricotta is active with the American Society for Horticultural Science, the Pennsylvania Horticultural Society, and the Bucks County Foodshed Alliance.