Saving Trees from the Inside Out

Why Is My Tree Turning Yellow? The Hidden Threat of Iron Chlorosis—and How to Fix It

Have you noticed your tree leaves turning yellow too early in the season? You might assume it’s just the natural transition into fall—but your tree could be sounding an alarm. That yellowing may be a sign of Iron Chlorosis, a nutrient deficiency that silently damages your tree from the inside out.

What Is Iron Chlorosis?

Iron Chlorosis is a common but often overlooked problem in many Utah landscapes. Despite its name, the issue isn't a lack of iron in the soil. Instead, it's about the tree’s inability to absorb iron properly, often due to:

• Alkaline soil pH

• Poor soil aeration

• Compacted ground

• Overwatering or drainage problems

Signs Your Tree Might Have Iron Chlorosis

Look for these key symptoms:

• Leaves turning yellow while veins stay green

• Slower growth, even during the growing season

• Thin or sparse foliage

• Premature leaf drop

• Overall tree decline or bare patches

If your tree shows these signs, don’t wait—intervention is essential to prevent long-term damage or tree death.