Galls of Southern Ontario Workshop
Wednesday, August 27, 2025
9 AM - 4 PM
Format: In-Person
Instructor: Joseph Langlois
Fee: $94 +HST per person if you register by the early bird date of August 19, 2025. After July 17, the fee is 104 +HST
What is a gall? If you have ever noticed a strange bump, ball, or swelling on a leaf or stem, you have likely spotted one—but what caused it? Galls are abnormal plant growths triggered by a diverse range of organisms, including insects, mites, and fungi. Far from being mere deformities, these structures serve as protective homes and food sources for the creatures that create them. They come in an astonishing variety of shapes, sizes, and colours—each with its own unique natural history.
Join us for a workshop on the Galls of Southern Ontario, where we will explore their incredible diversity, how they form, the organisms behind them, and so much more. This hybrid workshop will begin indoors with an introduction to gall biology, followed by an outdoor exploration in The Arboretum, where we will search for galls in the field. With well over 100 types of galls found here, there's an incredible amount to discover!.
*Maximum 18 adults
Register via the link in the bio or here:
https://arboretum.uoguelph.ca/educationandevents/workshops
#UoGArboretum #UofGArboretum #UofG #Guelph #GuelphArboretum #ExploreGuelph #Nature #ExploreNature #OutdoorLearning #Trees #ExperienceGuelph #OntarioTravel #Canada #Ontario #ExploreCanada #ExploreOntario #Galls
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