Find solutions to common tree care problems affecting homeowners and property managers in Toronto. From pest infestations and tree diseases to structural hazards and environmental stress, our expert resources provide guidance to identify, prevent, and address tree issues. Learn when to DIY and when to call certified arborists to maintain healthy and safe trees
Is My Tree Dangerous? When should a dangerous tree be removed or pruned? How can you tell if a tree is a hazard? Many of the scenarios where people think a tree is dangerous aren’t actually a risk. On the other hand, some of the instances where trees do pose a hazard are hard for …
If Your Pine or Evergreen Tree Is Losing Needles, It May Not Be All Bad News Trees with needles come in many varieties — there are over 100 species of trees that have needles. Inevitably, some of these trees will lose their needles from time to time. But what happens if your tree is losing …
Armillaria Mushrooms Can Be a Sign of Root Rot Mushrooms on trees may seem like a normal part of the ecosystem, but unfortunately, most of the time they indicate a problem. In the spring, you may see clusters of small brown-capped mushrooms growing at the base of your trees. These are armillaria mushrooms, also known …
Learn more about magnolia scale Once your magnolia is past its spring bloom, you may notice something else on your tree: Why are you seeing wasps on magnolias? Wasps on your tree may look benign, but they can indicate a bigger problem called magnolia scale. This disease affects magnolia trees and is at its peak …
This invasive moth causes serious damage to Ontario trees If there’s only one pest on the tip of everyone’s tongues this year, it’s Spongy moth, also known as European gypsy moth. Controlling gypsy moth is important, because the moth caterpillars can quickly cause significant damage to trees and plants. Though this moth has been commonly …
Phytophthora Can Be Treated What is phytophthora root rot? Despite the tongue-twisting name, it’s a common issue in Ontario plants, but it can often go unnoticed. Phytophthora is a common disease in both landscape plants and crops in southern Ontario. Caused by an organism similar to fungi, also called a water mould (or oomycete), there …
Tiny Cedar Mites Can Cause Big Problems Though not actually spiders, spider mites on cedar trees can cause damage on your cedar, juniper and cypress plants. If you’re a gardener, you may already be familiar with garden mites that damage plants like tomatoes. Unfortunately, cedar mites and other tree mites can be harmful to your …
Boxwoods are a popular plant in Toronto and GTA gardens, but this species can be susceptible to pests like boxwood moth. Torontonians appreciate boxwoods for their tidy look, tolerance for pruning, and ability to grow as a hedge or privacy barrier. They’re also a low-maintenance plant. Popular species include the green gem boxwood and winter …
Aphid ‘spitting’ has many options for treatment If you’ve noticed a greenish-yellow residue on your plants or yard around late May or early June, you may have wondered where it comes from. Aphid “honeydew” is a substance excreted by aphids in late spring, and found on tree and plant leaves, as well as surfaces below …
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