• Spring is Here: Start Pest Control Activities

    The  Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) has issued a reminder that the arrival of spring is the signal to search your property for overwintering pests, especially on woody plants. They advise that now is the time to Remove remove egg masses of Viburnum leaf beetle.  Look for rows of bumpy caps on the twigs of last year’s growth.  Prune out infested twigs, collect and destroy them to reduce populations of larvae on Viburnum ...

  • Kick Off One Million Tree Planting Program in Mississauga April 23

    Join the City of Mississauga and partners Credit Valley Conservation, Ecosource, Evergreen, and Association for Canadian Educational Resources to celebrate the One Million Trees Mississauga planting program at this year's annual tree planting event as part of Earth Days. Gather at 9am Saturday, April 23rd, 2016 at Heatherleigh Park, Mississauga, ready to help plant! For more information on this free event, visit the One Million Tree website.

  • Caution: Growing Potatoes at Home? Think Again

    Now is the time home gardeners are planning their vegetable gardens and ordering seeds, and some may be considering growing potatoes this year. The Ontario Ministry of Food and Agriculture (OMAFRA) has some concerns about  potatoes in urban home gardens. Their web site explains: "Late blight caused by the fungus Phytophthora infestans is a devastating potato disease. Spores in the late blight fungus are spread by the wind and can travel long distances. Urban gardeners cannot access ...

  • 250 Year Old Etobicoke Oak Named Heritage Tree

    On December 11th, a 24-metre tall white oak in an Etobicoke backyard was  recognized by Forests Ontario as part of its Heritage Tree Program. The program allows anyone across Ontario to nominate a tree for recognition based on its social or cultural history or its special community significance. A number of criteria may qualify a tree as a Heritage Tree, including its distinct size, form, age, rarity, or its connection with historic individuals, events, or locations. To nominate a ...

  • A Good Time to Fertilize

    Did you know that autumn is a major root growth period for woody and herbaceous perennials? Roots will grow and absorb water and nutrients whenever soil temperatures remain above 5°C (conifer roots will grow at even lower temperatures). The  Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) says that up to half of the annual fertilizer requirement may be applied to landscape plants, after shoot growth ceases (mid-September to mid-October). In fact, they explain that by ...

  • Apply Horticultural Oil Now to Control Scale

    The  Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) advises that magnolia scale insect populations were high in the GTA this year. They suggest that now is the time to use horticultural oil to control these and beech scale from infesting trees next year. For more information, visit the (OMAFRA)  blog here.

  • Learn about the Toronto Approach to Climate Change

    TransformTO is a two-year project that will re-imagine and identify how the City will achieve its greenhouse gas reduction goal of 80%, while enhancing our local economy, reducing social inequalities, and shifting our consumption patterns. Starting this Fall, the City will host a series of TalkTransformation! events, to hear from thought-leaders and community experts what critical ideas, technologies and programs we need to reach our targets. But you have a chance to contribute, too! Let the organizers know what ...

  • Pest Alert: Japanese Beetles

    The Ontario Ministry of Agriculture and Food and the Ministry of Rural Affairs (OMAFRA) has reported that, as of this week, Japanese beetle adults are flying and starting to feed on leaves of woody plants (Syringa, Tilia, Ulmus, Prunus, Rosa).  Look for metallic, coppery-green beetles with white tufts of hairs along the edge of their abdomens. The most effective method of dealing with the adults is ...

  • Great Toronto Tree Hunt Winners Announced

    On June 24, 2015, LEAF announced the winners of The Great Toronto Tree Hunt, an initiative designed to reinforce the importance of our urban forest. The winner in the Uniqueness category is the Dawn Redwood very near the Children’s Centre and Teaching Garden of the Toronto Botanical Gardens, an important partner of the Toronto Master Gardeners. To see photos and learn more about all of the winners and entries, visit LEAF's site here.

  • Vote for Your Favourite Toronto Tree to Celebrate Our Urban Forest

    LEAF, a not-for-profit organization dedicated to the protection and improvement of the urban forest, and a Toronto Master Gardeners partner, is partnering with several other organizations to host The Great Toronto Tree Hunt, a contest to find and celebrate the greatest trees in our city. This is a fun and creative way to reinforce the importance of our urban forest. At close of nominations May 31, nearly 400 trees had been nominated. Now's the time to vote ...