Summer in Île-Bizard and L'Île-Perrot brings long sunny days, but also intense heat, humidity, and occasional drought conditions that can take a serious toll on your trees. Many homeowners focus on winter damage and spring maintenance but forget that summer is when trees face some of their greatest challenges. Heat stress, insufficient watering, insect infestations, and soil compaction can all weaken a tree and set it up for problems in the following seasons. At Service d'Arbres Brandse, we see summer neglect contributing to tree decline year after year, and most of it is preventable with basic care.
Watering — Deep and Infrequent Is Best
The most common mistake homeowners make in summer is watering their trees the same way they water their lawn — frequently and shallowly. Trees need deep watering that penetrates 30 to 45 centimetres into the soil to reach the root zone. A slow trickle from a garden hose left at the base of the tree for 30 to 60 minutes once a week is far more effective than daily sprinkling. For newly planted trees, increase frequency to twice per week during heat waves. Established trees generally need supplemental watering only during extended dry periods, but sandy soils common in parts of Île-Bizard drain faster and may require more attention. Water early in the morning to minimize evaporation.
Recognizing Heat Stress
Trees show heat stress in several ways, and learning to read the signs can help you intervene before serious damage occurs. Leaf scorch — browning or crisping along leaf margins — is the most obvious symptom. Wilting, premature leaf drop, and curling leaves are also indicators. Some species like birch and dogwood are more sensitive than others. If you notice these symptoms on a large mature tree, it may indicate a deeper problem such as root damage or soil compaction rather than simply heat. A professional assessment can determine whether watering alone will solve the issue or if the tree needs more comprehensive care.
Pest Monitoring Through the Summer
Summer is peak season for several tree pests that affect Île-Bizard and L'Île-Perrot properties. Japanese beetles emerge in late June and feed on the foliage of lindens, birch, roses, and many other plants, skeletonizing leaves and weakening trees over repeated years. Tent caterpillars build their distinctive silk nests in the crotches of cherry and apple trees and can defoliate a small tree in days. Gypsy moth caterpillars are another threat, particularly to oak trees. Regular visual inspection of your trees throughout the summer allows you to catch infestations early when treatment is most effective. Look for chewed leaves, silk webs, frass droppings on the ground, and clusters of insects on branches.
Mulching for Summer Success
A proper mulch ring is one of the simplest and most effective things you can do for your trees in summer. Organic mulch — wood chips, shredded bark, or leaf compost — applied in a ring around the tree retains soil moisture, moderates root zone temperature, suppresses competing weeds, and slowly improves soil structure as it decomposes. Apply a layer 7 to 10 centimetres deep extending to the drip line or as far as practical, but always keep mulch 15 centimetres away from the trunk to prevent moisture-related bark decay. Refresh the mulch annually in spring. Avoid dyed rubber mulch or landscaping fabric under trees, as these offer no nutritional benefit.
When to Call a Professional
Some summer tree issues are beyond the scope of basic homeowner care. If you notice large dead branches in the canopy, extensive insect damage, oozing sap or cankers on the trunk, or mushrooms growing at the base of the tree, call a certified arborist for an assessment. These can be signs of serious structural or health problems that require expert intervention. Service d'Arbres Brandse serves Île-Bizard, L'Île-Perrot, and every community across the West Island. We offer summer health assessments, pest treatment programs, and maintenance pruning to keep your trees thriving through the hottest months. Reach us at (438) 365-5410 to schedule a visit.