A Checklist for Assessing Tree Health Before Storm Season
October 18, 2026

A Checklist for Assessing Tree Health Before Storm Season

High winds do not create tree failures so much as reveal them. A cypress that has stood straight through a decade of summer heat can still hide a cracked fork, a pocket of rot, or a root plate that has quietly lifted. The weeks before storm season are the right time to look closely—not with a sense of doom, but with a clipboard, a pair of binoculars, and an hour to spare. This checklist is for the kind of careful walk-around that catches small problems while they are still small.

What follows is not a diagnostic manual. It is a way of looking—an order of operations that keeps you from being distracted by the first brown branch you notice and missing the seam in the trunk behind it. Work through it once in late winter, when the structure of a tree is easiest to read, and again a few weeks before the storms you expect. Most of what you find will be ordinary: a dead twig, a rubbed patch of bark, a lean that has been there for twenty years. The value lies in the few items that are not ordinary, and in knowing exactly where they are when the wind gets up.

Start With a Slow Lap Around the Tree

Begin at a distance. Stand where you can see the whole silhouette against the sky, then walk a full circle. A cypress is narrow and upright, which makes it easy to inspect from one side and miss the other. Look for changes in the outline: a sudden kink in the leader, a section that has thinned, a branch that hangs lower than its neighbors.

Do this on a dry, calm day. Bring binoculars, a notebook, and your phone camera. Photographs taken from the same two or three spots each year are more useful than a hundred random close-ups. They show whether a lean is new, whether a crown is filling in, and whether that small crack has grown.

Compare the tree to its neighbors, too. A single cypress leaning a few degrees is unremarkable; one leaning noticeably more than the row it stands in, or leaning in a direction the prevailing wind does not explain, is worth a second look. So is a tree that has recently lost the shelter of a building or a neighboring canopy—exposure changes faster than wood does.

Stay on the ground. Do not climb the tree, lean a ladder against it, or stand beneath a canopy that is creaking or dropping debris. The inspection is a visual exercise first; hands-on work comes later, and only for someone trained to do it.

Read the Crown Before the Wind Does

Deadwood is the most common storm-season finding, and often the least dramatic. In a dense cypress column, dead twigs and branch stubs can be hidden until a gust brings them down. Look for bare branches, brown tips that never green up, and stubs where a limb has broken off. Note anything hanging by a strip of bark or caught in the canopy.

It helps to remember how deadwood actually fails. The limb that comes down in a storm is rarely the largest one; it is the one that has been dead for two seasons, lost its weight at the tip, and is holding on through a hinge of decaying wood. A stub the width of your wrist, fifteen feet up and directly over a driveway, is a more practical concern than a healthy limb twice its size.

Density matters too. A crown that is suddenly sparse, or one side that is thinning while the other stays full, deserves attention. So does a flush of brown patches in summer or autumn. On cypress, such symptoms can point to canker, root trouble, or water stress, and the difference is not always obvious from the ground.

What to note in the crown

  • Dead branches, especially those hanging over a roof, path, drive, or seating area.
  • Broken tips, stubs, and branches rubbing against each other.
  • Sparse inner foliage or an uneven, one-sided crown.
  • Brown patches, resin, or dark streaks on branches within reach of binoculars.
  • New growth that is weak, twisted, or concentrated in a few tufts.
  • Forks that form a tight V rather than a broad U, particularly high in the crown.

Use the binoculars at every major fork. That is where a small defect can become a large one once the crown fills with wind.

The most dangerous branch is rarely the biggest one. It is the one that has been dead for two years, directly above the place you park.

Inspect the Trunk and Every Fork

Walk close enough to see the bark, but keep your eyes moving upward. Work in overlapping bands—base to chest height, chest height to the first fork, then the fork itself—so that no section of trunk goes unexamined. On a mature cypress the trunk is often the least dramatic part of the tree and the most revealing. A crown can lose a limb and recover; a trunk that has begun to fail near the base rarely gives a second warning.

Look for seams: vertical lines where the bark has split and healed over, sometimes in a raised ridge. A single seam low on the trunk is often an old wound closing. Several seams converging near the base, or one that is dark, wet, and weeping, is a different matter. Sunken patches, loose sheets of bark, and streaks of resin all suggest that something is happening beneath the surface, out of sight.

Shelf-shaped conks and other fungal growth are the fruiting bodies of decay, and they usually appear only after the wood inside has been compromised for some time. Their presence does not mean the tree must come down this week, but it does mean the question should be put to someone qualified to answer it.

Pay particular attention to the forks. Cypress planted as screens and hedges frequently develops two or more stems from the same point, and where those stems meet, a crease of trapped bark can form. A sound union shows a raised collar of bark running around the base of each stem; an included union shows a V-shaped crease running straight down into the crotch, with no collar at all. That crease is the tree's weakest point and the first place to check after a windy night.

What to note on the trunk and forks

  • Vertical cracks or seams, especially those that are dark, wet, or widening.
  • Sunken or flattened areas on an otherwise round trunk.
  • Bark that is loose, missing, or peeling in sheets beyond normal shedding.
  • Conks, mushrooms, or fungal growth on the trunk or in a fork.
  • Tight V-shaped forks with a visible crease of included bark.
  • Holes, cavities, frass, or sawdust at the base.
  • Old wounds that have not sealed—a rule of thumb is that a wound wider than roughly a third of the trunk's circumference is worth recording.

A gentle probe with a screwdriver on reachable wood will tell you whether it is soft, but do not excavate; opening a wound to look inside usually does more harm than the information is worth.

Look Down: Roots, Soil, and the Base

Most storm failures begin underground, which is inconvenient, because the ground gives up its information grudgingly. You will not see roots, but you can see what they are doing to the soil.

Walk the whole root zone, not just the trunk. Roots typically extend well beyond the drip line—often one and a half times the height of the tree or more. Look for cracks in the soil radiating out from the base, a mound of turf or soil lifted on the side opposite a lean, and roots newly exposed where none were visible before. Those are signs that the root plate has begun to move, and they are the findings that most deserve a professional opinion.

Look, too, at how water behaves. A shallow depression that holds water for days after rain, a permanently soggy patch beside a tree that used to be dry, or a downspout redirected toward the base all change the conditions roots live in. Mulch piled in a cone against the trunk keeps bark damp and invites decay; it should be pulled back to expose the root flare.

Root-zone red flags

  • Soil cracks, or a lifted mound, on one side of the base.
  • Exposed, severed, or crossing roots near the surface.
  • Mushrooms or conks at the base of the trunk.
  • Mulch or soil banked over the root flare.
  • Recent paving, trenching, grading, or excavation within the root zone.
  • Standing water, or a change in drainage, near the tree.

One of the most common hidden causes of decline is a change in the root zone years earlier—a driveway widened, a patio poured, a trench cut for a cable. Cypress is not especially forgiving of root disturbance, and the symptoms often show up two or three seasons later in the crown, far from the original work.

Keep a Simple Record, and Know When to Call

A walk-around produces a list, and a list is only useful if it is written down. Use three categories, and be disciplined about the middle one.

  1. Note. Photograph the item from a fixed spot and write the date. Most small findings—a stub, a rubbed branch, an old seam—need nothing more than this.
  2. Monitor. For anything that might be changing: a lean, a widening crack, a thinning crown, a fork with a crease. Measure or photograph it in a way you can repeat, then check it again in three months and after the first big wind.
  3. Act. Call a certified arborist for anything involving a target: a dead limb over a roof, a cavity at the base, conks on the trunk, a fork that has opened, roots that have been cut.

Risk has two parts, and it helps to treat them separately: the likelihood that something fails, and the value of what it would hit. A cracked limb over an empty back corner is a different problem from an identical limb over the driveway where the car sits. Sorting by target first will keep you from spending a season worrying about the wrong tree.

Finally, decide in advance what you will do when the wind arrives. Clear the gutters, move the car, keep paths and the ground beneath the largest trees empty during the worst of it, and stay well out from under the canopy while you watch. An inspected and recorded tree is not a guarantee—but it is a better position than a guess, and it turns a season of vague worry into a short list of specific, solvable jobs.

Photo: Michael Burrows / Pexels

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