DIY vs Professional Tree Care: When to Call an Arborist

There is a lot you can do yourself to keep the trees on your Calgary property healthy. But there is also a clear line where DIY stops being practical and starts becoming dangerous or counterproductive. Knowing where that line is can save you money, prevent injury, and protect your trees from well-intentioned mistakes.

What You Can Handle Yourself

Watering

This is the single most impactful thing a homeowner can do for their trees, and it is entirely a DIY task. A soaker hose, a slow-running garden hose, or a tree watering bag are all you need. Water deeply at the drip line once a week during dry summer months and give a thorough fall soak before freeze-up. No special equipment or expertise required.

Mulching

Applying a 2 to 4 inch layer of wood chip mulch around the base of your trees is easy and highly beneficial. It conserves moisture, moderates soil temperature, and suppresses grass and weeds that compete with the tree for resources. Just keep the mulch pulled back a few inches from the trunk to avoid creating moisture and pest problems.

Small Branch Pruning

If you can reach a branch while standing on the ground using a pair of hand pruners or a small pruning saw, and the branch is no thicker than about 2 inches in diameter, this is generally safe to handle yourself. Small deadwood removal, sucker pruning at the base, and trimming low branches that obstruct a walkway are all reasonable DIY tasks.

Use clean, sharp tools and make your cuts just outside the branch collar, the slightly raised area where the branch meets the parent limb. Never leave long stubs and never cut flush with the trunk.

Pest Monitoring

Keeping an eye on your trees for early signs of pest or disease problems is something every homeowner should do. Check for unusual leaf discolouration, holes in leaves, webbing, egg masses, mushrooms on trunks, and bark damage. Early detection makes treatment far more effective, and you do not need a degree to spot that something looks wrong.

When to Call a Professional

Any Work Requiring a Ladder or Climbing

This is the most important rule. Falls from ladders are one of the leading causes of serious injury and death among homeowners. Leaning a ladder against a tree is inherently unstable. Climbing into a tree without proper training, harness, and climbing line is extremely dangerous. Professional arborists are trained, equipped, and insured for aerial work. This is not an area to cut corners.

Branches Larger Than 3 Inches in Diameter

Large branches are heavy, and gravity is unforgiving. A 6-inch diameter branch that is 10 feet long can weigh several hundred pounds. Improper cuts can cause the branch to split, swing, or fall unpredictably. Professionals understand the physics of branch removal and use techniques like three-cut methods and rigging to control how and where wood comes down.

Anything Near Power Lines

Alberta law prohibits unqualified persons from working within a certain distance of energized power lines. Even branches that are close to but not touching lines can arc electricity, especially in wet conditions. Only utility-certified arborists or the utility company itself should work on trees near overhead lines. In Calgary, contact ENMAX or your utility provider for trees in power lines.

Tree Removal

Felling a tree safely, especially in a yard with fences, buildings, and other structures nearby, requires knowledge of lean assessment, hinge mechanics, and escape routes. It also often requires a chainsaw, which is one of the most dangerous tools a person can operate. Leave tree removal to insured professionals who do this work every day.

Disease Diagnosis and Treatment

While you can spot that something is wrong, accurately diagnosing a tree disease and recommending effective treatment takes training. Many diseases look similar to nutrient deficiencies or drought stress. Applying the wrong treatment wastes money and delays proper care. A certified arborist can identify the issue and prescribe targeted treatment.

How to Choose the Right Arborist

Look for ISA (International Society of Arboriculture) certification. Ask for proof of liability insurance and WCB coverage. Get at least two or three quotes for comparison. Be wary of anyone who recommends topping, offers unusually low prices, or goes door to door after a storm. A good arborist will explain what they recommend and why, without pressure.