Tree Risk Checklist

Look from the ground.

Observe from a safe distance without climbing, pulling on branches or digging around roots. Note what has changed, where it is, and when you first noticed it. Photographs taken from a safe location can help explain your concern.

Look up into the canopy.

• Are there dead branches, broken limbs or branches hanging in the canopy?
• Have large branches fallen recently?
• Are leaves unusually small, pale, sparse or dropping at an unexpected time?
• Has the tree been topped or heavily pruned?

Describe the location of any change. A thinning section on one side of the tree can be useful information to share, even if the rest of the canopy looks normal.

Look for changes near the base.

• Are there cracks or splits in the trunk or where major branches join?
• Can you see a cavity, damaged bark or signs of decay?
• Are mushrooms or other fungal growths appearing on the trunk or near the base?
• Does the tree have a new or increasing lean, lifting soil or exposed roots?
• Do several large stems grow from one point?

A visible feature does not, by itself, establish how likely a tree is to fail. An arborist can evaluate its significance in the context of the whole tree and site.

Think about what has changed nearby.

• Have roots been cut or disturbed by digging, trenching, paving or construction?
• Has soil been added or removed around the tree?
• Have nearby trees been removed, died or declined?
• Has a recent storm damaged the tree or changed its position?
• Are people, buildings, parked vehicles or frequently used areas beneath or near it?

Tell the arborist about recent work around the tree, even if it was not tree work. Changes to roots and growing conditions may not be obvious from a quick look at the canopy.

Use your observations to start a conversation.

If you notice a concerning change, arrange a tree risk assessment. Share photographs, the timing of the change and any recent storms or construction.

An assessment can help you understand the concern and appropriate options, which may include monitoring, pruning or removal. Checking “no” to every item does not guarantee a tree is safe.

For urgent storm damage, see our emergency tree service. Keep the affected area clear while help is arranged.