Broken tree branch showing structural damage, a common safety hazard in Markham Ontario.

Healthy, well-maintained trees add beauty, shade, and value to your property. But when a tree becomes weak, damaged, or unstable, it can quickly turn into a serious safety hazard. In Markham, Ontario, where strong winds, heavy snow, and storms are common, recognizing early warning signs can help you prevent costly property damage—or worse, personal injury.

At Castor Tree Care Services, we believe safety comes first. Here are the top signs that your tree may be a danger and needs immediate professional attention.

1. A Leaning Tree That Wasn’t Leaning Before

It’s natural for some trees to grow at an angle. However, if your tree suddenly develops a lean or the tilt appears to be worsening, it could indicate root failure or instability.

  • Red flag: A tree leaning more than 15 degrees is considered hazardous.
  • What to do: Contact a certified arborist immediately to assess whether it can be stabilized or must be removed.

2. Cracked or Split Trunk

A healthy trunk is strong and solid. Large cracks, cavities, or splits in the trunk weaken the structural integrity of the entire tree.

  • Warning signs: Vertical cracks, deep cavities, or hollow sections.
  • Why it matters: A compromised trunk can cause the tree to snap during storms or under the weight of snow and ice.

3. Exposed or Damaged Roots

Roots are a tree’s anchor. When they are damaged or exposed, stability is at risk.

  • Look out for: Uprooted sections of soil, construction damage, or visible rot near the base.
  • Hazard: Trees with weakened roots are more likely to topple without warning.

4. Dead or Hanging Branches

Falling branches are one of the most common tree hazards in residential neighborhoods.

  • Clues: Large dead limbs, branches without leaves in summer, or hanging “widowmakers” stuck in the canopy.
  • Risk factor: Even a single heavy branch can cause significant injury or damage to vehicles, roofs, or power lines.

 

5. Signs of Disease or Pest Infestation

Tree trunk with visible decay and pest damage, indicating a serious tree safety risk in Markham Ontario.

Tree diseases and pests weaken trees from the inside out.

  • Symptoms to watch: Discolored or spotted leaves, peeling bark, sawdust-like residue, or unusual growths (fungal mushrooms at the base).
  • Why it’s urgent: A diseased tree spreads problems to nearby trees and can deteriorate rapidly.

6. Hollow or Decayed Sections

Decay inside a tree often goes unnoticed until it’s too late.

  • Indicators: Soft or spongy wood, cavities, or fungal growth around the trunk.
  • Hazard level: Hollow trees lose their strength and are at high risk of collapse.

Protect Your Property with Professional Tree Care in Markham

If you’ve noticed any of these warning signs, don’t wait until the next storm to take action. Trees that pose a safety hazard should be inspected by a professional arborist right away.

At Castor Tree Care Services, we provide expert tree inspections, emergency tree removal, and maintenance services to keep your property safe and beautiful. Serving homeowners and businesses across Markham, Ontario, we are committed to protecting your family, your property, and your trees.

Call Castor Tree Care Services Today

Worried about a tree on your property? Contact us for a professional assessment and peace of mind.

Castor Tree Care Services – Keeping Markham’s Trees Safe, Healthy, and Strong.