Hemlock Wooly Adelgid
February 16, 2023
Jess Wilkin
Invasive species are no stranger to the urban forest. Dutch elm disease, emerald ash borer and spongy moth are a few of the destructive species we have become familiar with. The hemlock woolly adelgid is Ontario’s newest unwelcome pest but the good news is we can all take steps to help manage it.
Eastern White Cedar
January 24, 2023
Justin Lewis
Stacey Bowman has recently joined the LEAF Board of Directors. In this blog, our Acting Executive Director, Erin MacDonald interviews Stacey about her experience and motivation for becoming a LEAF Board member.
Bumble bee on St. John's wort flower
January 09, 2023
Sarah G
Have you heard the recent buzz about the challenges facing our native bee populations? Due to factors such as climate change, loss of habitat and food sources, invasive plants and pesticide exposure, native bee population levels are threatened. Good news though - you can help! LEAF offers Native Bee Shrub Bundles designed to provide habitat and food sources for our native bees!
red coloured maple leaf on the snow
January 03, 2023
Justin Lewis
Nick Charalambu has recently joined the LEAF Board of Directors. In this blog, our Acting Executive Director, Erin MacDonald interviews Nick about his experience and motivation for becoming a LEAF Board member.
sun shining through trees on winter day
December 19, 2022
Justin Lewis
Ying Qu has recently joined the LEAF Board of Directors. In this blog, our Acting Executive Director, Erin MacDonald interviews Ying about her experience and her motivation for becoming a LEAF Board member.
A northern cardinal and blue jay perched on branches during winter.
November 17, 2022
Jon Curtis
Creating a backyard oasis with birds in mind is much easier than you think! By focusing on native species and diversity, you can design a beautiful yard for yourself all while catching a glimpse into the antics of the bird world.
Alicia McNutt is the Naturalization Assistant at LEAF.
November 08, 2022
Guest Blogger
There are countless benefits to enhancing biodiversity. LEAF’s naturalization planting events assist in recreating diverse, sustainable and resilient urban forests. Through increasing plant diversity, LEAF protects public lands and urban forests for future generations, while helping connect people to their local environments and to each other. These events are crucial to creating and sustaining healthy environments.
A Cedar Waxwing (Bombycilla cedrorum) eating nannyberry (Viburnum lentago) fruit.
November 02, 2022
Justin Lewis
Fall is an excellent time of year to attract birds to your yard, and one of the best ways to do so is by planting fall food sources. Native fall-fruiting shrubs are great choices because they produce an abundance of nutritious fruit exactly when migrating and winter-residing birds need them.
Kentucky Coffeetree silhouette in winter
September 21, 2022
Brenna Anstett
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The spookiest time of year is just around the corner! With its sinister silhouette, furrowed bark and wild, spreading branches, it’s no wonder the Kentucky coffeetree (Gymnocladus dioicus) is known as the Halloween tree. Standing nearly 45 feet tall, its bare, irregular crown makes for the perfect haunted house backdrop!
Volunteers removing invasive plants
September 13, 2022
Guest Blogger
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Newly planted trees and shrubs are vulnerable to many threats including invasive species and extreme weather conditions which impact the development of young plants. That’s why it’s so important for LEAF to return to our planting sites and provide much-needed care to our young trees and shrubs.

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