Why are my tree's leaves yellow with green veins?

That pattern, pale tissue between green veins, is interveinal chlorosis. It means the leaf cannot get enough of a micronutrient, usually iron or manganese, to make chlorophyll. In Central Texas it is almost always because high-pH alkaline soil has locked those nutrients up, not because they are missing from the ground.

Is chlorosis caused by a lack of nutrients in the soil?

Usually not. The iron and manganese are typically present in the soil but chemically unavailable at high pH. This is why simply adding more fertilizer rarely works. The fix is to make the nutrient available, through chelated iron, trunk injection, or lowering soil pH over time, and to match species to the soil.

Can chlorosis be fixed?

Often yes. A soil-applied chelated iron made for high-pH soils, or a trunk injection for a faster green-up on a high-value tree, can correct the deficiency, while long-term soil management lowers pH. Severe, long-running cases that have caused dieback are harder, which is why catching it early and confirming the cause matters.

Plant Health Care • Central Texas

Yellow leaves, green veins

When a tree's leaves fade to yellow but the veins stay green, that is chlorosis. In Central Texas it usually is not a bug or a disease, it is the soil: high pH locking up the iron and manganese the leaves need. The good news is that, caught in time, it is one of the most fixable problems out there.

Get it diagnosed → Call 512-800-3566

Green veinsThe telltale pattern

High-pH soilThe real cause here

FixableWhen caught early

A chlorotic sweetgum in an Austin yard, its whole canopy faded to a pale yellow-green

Field photo

A red oak leaf showing interveinal chlorosis, with green veins against pale yellow-green tissue

What you are seeing

Read the veins, not just the color

The pattern is the diagnosis. In chlorosis the veins stay green while the tissue between them turns yellow. That is called interveinal chlorosis, and it means the leaf cannot get enough of a micronutrient, usually iron or manganese, to build chlorophyll.

Here is the part that surprises people: the nutrient is usually already in the soil. It is just chemically locked up and unavailable. So the tree starves in the middle of plenty, and a bag of ordinary fertilizer does almost nothing.

Which nutrient

Iron or manganese

Both make the same green-vein, yellow-tissue pattern. Which one, and which tree, points to the right fix.

Most common here

Iron chlorosis

Hits the newest growth at the branch tips first
Common on red oak, pin oak, sweetgum, and other acid-loving species
Severe cases bleach to near white, then leaf edges scorch and die back
Classic on trees planted in our alkaline, caliche-heavy soils

Looks alike

Manganese chlorosis

Same interveinal yellowing, often a bit more banded along the veins
Common on maples and a few other species in high-pH soil
Frequently overlaps with iron, both locked by the same alkaline conditions
Confirmed properly with a soil test, not by eye alone

Why it is so common here

Blame the soil, not the tree

Much of Central Texas sits on alkaline, caliche-rich soil with a pH well above neutral. At that pH, iron and manganese bind into forms roots cannot absorb, no matter how much is present.

That is why the trees that struggle most are the ones that evolved for acidic soils and got planted here anyway, red oaks, pin oaks, sweetgums, some maples. They are doing fine on water and sunlight, but they are quietly starved for a nutrient sitting right under them. Fix the availability, or pick species suited to the soil, and the problem goes away.

How to fix it

Make the nutrient available

The goal is not to dump more iron in, it is to get iron the tree can actually use, and to nudge the soil over time.

What works

Chelated iron made for high pH (an EDDHA chelate) applied to the soil, so it stays available
Trunk injection for a faster green-up on a high-value tree
Lowering soil pH over time with elemental sulfur and organic matter
Right tree, right place, choosing alkaline-tolerant species on the worst sites

What does not

Ordinary nitrogen fertilizer. The nutrient is locked, not missing
A non-chelated iron product that just locks up again at high pH
Expecting overnight color. Green-up takes weeks, and soil fixes take seasons
Ignoring it. Years of chlorosis lead to dieback that is far harder to reverse

Tree going yellow? Let's find out why

Send me a photo of the leaves and I can usually tell chlorosis from the other reasons a tree yellows, then point you to the treatment that actually fits your soil and your tree.

Request an assessment → Call 512-800-3566

This page is educational and does not diagnose any specific tree. Yellowing has several possible causes, and treatment rates and methods should follow a soil test, the product label, and the specific tree and site. When a valuable tree is declining, have it evaluated on site before treating.