• OHS with the FoF Annual Mother’s Day Plant Sale 2026

    Central Experimental Farm, Neatby Bldg., 960 Carling Ave & Maple Dr 960 Carling Avenue, Ottawa, ON, Canada
    OHS at the Friends of the Farm Mother’s Day Plant Sale will be taking place on Sunday, May 10, 2026 at the Central Experimental Farm We’re gearing up for this year’s Mother’s Day Plant Sale and we need your help! Volunteers are needed before the sale (May 3–9) for plant drop off, potting up, and preparation, and on the day of the sale for setup, sales, and clean up. If you can lend a hand, please be sure to email ottawahortweb@gmail.com with the subject line Plant Sale Volunteer.
  • OHS Annual Plant Auction & Sale

    Ron Kolbus Lakeside Centre at Britannia Park 102 Greenview Ave, Ottawa
    Our annual Plant Auction & Sale returns at the end of May — a lively evening that always fills the room. The Auction begins at 7:00 p.m. with spirited bidding on a curated selection of plants, followed by the Plant Sale from 8:00–9:00 p.m. featuring great perennials, houseplants and special finds at excellent prices. Join us for this important OHS fundraiser that supports our many community impact projects. See you there!
  • Culinary Delights With Herbs & Edible Flowers

    St Mark's Anglican Church 1606 Fisher Ave, Ottawa, Ontario, Canada
    In-person presentation by Nancy McDonald, Master Gardener of Ottawa-Carleton and Member of the Ottawa Horticultural Society (OHS)
  • Drama in the Butterfly Garden

    St Mark's Anglican Church 1606 Fisher Ave, Ottawa, Ontario, Canada
    In-person presentation by Carol Pasternak, MBA, LLB, is an author, photographer, and sought-after motivational nature speaker