Is That Tree Sick or Just Old? How a Tree Surgeon Tells the Difference

Introduction

Mature trees are a defining feature of many gardens and landscapes in Godalming, Surrey, offering character, shade, and ecological value. But when a tree starts to decline, it can be difficult to know whether it’s simply showing its age or suffering from something more serious. The difference matters—not just for the health of the tree, but for the safety of people and property nearby.

At NS Tree Surgery Godalming, we regularly assess trees that appear to be in decline. Some are gracefully ageing, requiring only light maintenance. Others, however, are battling disease or stress and need prompt attention. In this post, we’ll explore how a professional tree surgeon distinguishes between a tree that’s just old and one that’s actually unwell.

Signs of Ageing vs. Signs of Illness

A tree’s appearance changes naturally over time, and not all visible imperfections indicate disease. Understanding the difference is key.

Natural Ageing Indicators

  • Thicker, rougher bark
  • Slow but consistent growth
  • Small deadwood in the canopy
  • Minor cracks in large limbs (with no fresh damage)
  • Reduced flowering or fruiting as the tree matures

These signs usually indicate the tree is reaching maturity or old age but still structurally sound and biologically stable.

Signs a Tree Might Be Sick

  • Sudden or rapid leaf loss outside normal seasonal change
  • Fungal growth on the trunk or roots (e.g., bracket fungi)
  • Large sections of dieback in the canopy
  • Oozing sap, bleeding patches, or unusual bark texture
  • Cracks or splits that continue to worsen
  • Hollowing or soft areas in the trunk
  • A noticeable lean or unstable root flare

If you notice any of these, it’s important to get a tree surgeon to inspect the tree. Left untreated, disease or structural weakness can lead to significant safety risks.

The Role of a Tree Surgeon in Diagnosis

Tree surgeons do far more than just prune and fell trees—they diagnose issues by combining visual assessment with knowledge of species behaviour, growth patterns, and regional environmental factors. In a place like Godalming, where mature trees often exist in built-up gardens or along heritage landscapes, expertise is essential.

A professional assessment may include:

  • Checking for pests or fungal infections
  • Analysing soil conditions and drainage
  • Testing for decay or hollowness using specialist tools
  • Evaluating canopy structure and leaf condition
  • Identifying stress caused by nearby construction, root restriction, or drought

From this, a tree surgeon can recommend appropriate action—whether that’s selective pruning, disease management, or removal if the tree has become hazardous.

Why It Matters to Act Early

Many tree diseases progress slowly, and symptoms may only appear once the tree is significantly affected. Acting early can often save the tree—or prevent a dangerous situation from developing.

Benefits of early intervention include:

  • Preserving mature trees with high landscape value
  • Avoiding costly damage to property caused by falling limbs
  • Reducing the chance of disease spreading to nearby trees
  • Making informed decisions based on professional evaluation

In some cases, an old tree may simply need a little extra support—such as bracing or crown reduction—to continue thriving safely for years to come.

Conclusion

Not every tree that looks “tired” is in trouble, and not every decline is natural. The key is knowing the difference—and that’s where professional insight is invaluable. At NS Tree Surgery Godalming, we help homeowners across Godalming and the surrounding Surrey area understand their trees and make smart choices that balance safety, conservation, and aesthetics.

If you’re unsure whether a tree in your garden is simply growing old or quietly struggling, contact us today. A professional assessment could be the difference between losing a tree and giving it a second lease of life.

This is a tree laying on the ground of a garden that has just been felled by the operatives from NS Tree Surgery Godalming

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