Home » Speakers Listing To start, search by a specific category (hold CTRL to choose multiple), booking option, city, keyword, or choose a letter for last name. *New: Virtual speaking titles have been added. Choose virtual as a booking option to find virtual titles. To become an OHA Speaker, please send us an email for more information. Categories — Conservation Demonstration Edibles/Food Environment Floral Design Gardening Hosta Houseplants Judging/Shows Landscaping Native Plants Pollinators Seasonal Shade Speaker Sun Travel Trees and Shrubs Water Workshop General Interest Specialty Interest Booking Options — Virtual (Online) Only In Person Only Both Virtual and In-Person City Districts Served — All D01 D02 D03 D04 D05 D06 D07 D08 D09 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 Search Entries: Clear #abcdefghijklmnopqrstuvwxyzShow All Page Size Results Per Page 10 25 30 50 100 CITY/TOWNMississauga NAMEHeinke Thiessen OPTIONBoth Virtual and In-Person Learn More Favourite PlacesSecure Forms & Login Awards and Grants The Supply Shop Find a Society Society Name (enter one or more words) SearchesEvent Calendar Districts Listing Societies Listing Judges Listing Speakers Listing Latest OHA News Winners of Our 2021 Facebook Valentines Colouring Contest Support On Its Way for Ontario Horticultural Societies During Pandemic! 2020-21 Winter Trillium 4 Youth to be sponsored by OHA at 2021 Youth Summit 2020 Autumn Trillium Secure FormsLogin and Access Add an Event Supplies Order Form