What Is Root Flare and Why Is It Important?

If you look closely at a healthy tree, you’ll notice the trunk slightly widens right where it meets the ground. This natural widening is called the root flare. It’s the point where the trunk ends and the main roots begin to spread out into the soil.

Root Flare Explained Simply

Think of the root flare like the tree’s foundation. Just like a house needs its foundation visible and supported, a tree needs its root flare exposed and unobstructed to stay strong and healthy.

Why Root Flare Matters

When the root flare is buried under soil, mulch, or landscaping, it can cause serious problems over time, including:

• Poor oxygen flow to the roots

• Increased risk of rot and fungal disease

• Weakened tree stability

• Roots growing upward or circling the trunk

• Higher chance of tree failure during monsoon storms

In Tucson’s desert environment, where trees already face heat and drought stress, a buried root flare can significantly shorten a tree’s lifespan.

Common Root Flare Mistakes

Many trees are unintentionally harmed by:

• Planting too deep

• Mulch piled against the trunk (“mulch volcanoes”)

• Soil buildup from landscaping or irrigation changes

These issues can slowly decline a tree without obvious signs until damage is advanced.

How Tree Toppers Can Help

At Tree Toppers – Expert Tree Trimming in Tucson, AZ, we evaluate root flare exposure as part of our professional tree assessments. If needed, we can:

• Identify buried root flares

• Recommend safe corrections

• Improve long-term tree health and stability

The Bottom Line

A visible root flare is a sign of a properly planted and well-maintained tree. Understanding root flare helps homeowners protect their trees, prevent costly removals, and keep their property safer—especially during Tucson’s storm season.

If you’re unsure whether your trees have proper root flare exposure, contact Tree Toppers for a professional evaluation and free estimate.