Las Cruces Yard Guide
Yellow Leaves? How to Fix Iron Chlorosis in Las Cruces
Yellow leaves with green veins are one of the most common plant problems in Las Cruces, and it usually isn’t a lack of fertilizer. Our alkaline soil locks up iron, so plants can’t absorb it even when it’s there. Here’s how to confirm it’s iron chlorosis, which iron products actually work in our soil, and how to keep it from coming back.
Updated September 2026 using NMSU Extension Guide H-171, Iron Chlorosis.
Quick answer
Why are my plant leaves turning yellow with green veins?
Yellow leaves with green veins, especially on new growth, usually mean iron chlorosis. In Las Cruces’ alkaline soil, iron is tightly bound to soil particles, so plants can’t absorb it. Overwatering and poor drainage make it worse. An FeEDDHA iron chelate is the treatment that works best here.
NMSU Extension notes that symptoms usually show up in spring as new leaves emerge and get worse through summer. Adding more general fertilizer won’t fix it.
Is it iron chlorosis?
|
What you see |
Likely cause |
|---|---|
|
Yellow between green veins, new leaves |
Iron chlorosis |
|
Evenly yellow older leaves |
Nitrogen shortage |
|
Yellow, droopy, soil stays wet |
Overwatering |
|
Brown, crispy leaf edges |
Salt or drought stress |
|
Sudden yellowing, whole plant |
Root damage or pests |
Causes
What causes iron chlorosis in Las Cruces?
The main cause is high soil pH. Mesilla Valley soils are alkaline and often contain lime, which binds iron so roots can’t take it up. Wet, compacted or poorly drained soil, caliche, and deep planting all make it worse by damaging the roots that absorb iron.
Is my soil the problem?
Usually. Most Las Cruces soils are alkaline. The iron is there; the plant just can’t use it.
Can overwatering cause yellow leaves?
Yes. Soggy soil starves roots of air, and damaged roots absorb even less iron. Water deeply but less often.
Why only some plants?
Some plants are iron-hungry and struggle in alkaline soil. Desert natives rarely show it.
Causes and symptoms from NMSU Extension Guide H-171, Iron Chlorosis (revised 2026).
At-risk plants
Which plants get iron chlorosis most often?
NMSU lists photinia, willows, mulberry, maples, sycamores, poplars, roses, apples, pears, hawthorn, stone fruits and pecans as commonly affected. Native and desert-adapted plants, like desert willow, Texas sage and mesquite, rarely have trouble.
|
Often yellow in Las Cruces |
Rarely a problem |
|---|---|
|
Photinia, roses |
Texas sage, Apache plume |
|
Maples, sycamores |
Desert willow, chitalpa |
|
Willows, poplars, mulberry |
Thornless mesquite, palo verde |
|
Apples, pears, stone fruits |
Agave, yucca, sotol |
|
Pecans |
Choosing replacements? See 25 plants that thrive in Las Cruces.
Treatment
How do I fix iron chlorosis?
Use an FeEDDHA iron chelate, which stays available in alkaline soil. Spray chelated iron on new spring leaves when it’s below 85°F, or apply FeEDDHA to the soil around the drip line. Fix overwatering and drainage at the same time, or yellowing returns.
1
Confirm the symptom
Yellow between green veins on the newest leaves.
2
Check the watering
Soggy soil or emitters at the trunk? Fix those first.
3
Choose FeEDDHA
NMSU says it performs best in alkaline soil. Other chelates fall short here.
4
Spray in spring
Foliar sprays on new leaves, below 85°F, per the label.
5
Treat the soil
Apply FeEDDHA around the drip line and water it in.
6
Repeat as needed
Plants that are prone to it often need yearly treatment.
Products
Which iron products work in alkaline soil?
FeEDDHA is the chelate that works best in New Mexico’s alkaline soils. FeEDTA works only as a leaf spray, and NMSU notes FeDTPA and FeHEDTA are ineffective in our soil conditions. Check the label for the chelate type, not just the word “iron.”
|
Iron product |
In Las Cruces soil |
Use it for |
|---|---|---|
|
FeEDDHA chelate |
Works best |
Soil and foliar treatment |
|
FeEDTA chelate |
Leaf spray only |
Quick green-up on foliage |
|
FeDTPA, FeHEDTA |
Ineffective here (NMSU) |
Not recommended |
|
Iron sulfate |
Short-lived in soil |
Lawns, quick color |
Does sulfur lower soil pH?
Only briefly in lime-rich soils like ours. It’s rarely a lasting fix on its own.
Does compost help?
Yes, over time. Organic matter improves soil structure and root health, which helps plants take up iron.
What about my Bermuda lawn?
Yellow Bermuda often greens up with iron. Our Bermuda guide covers feeding and iron for lawns.
Prevention
How do I prevent yellow leaves in the future?
Choose plants adapted to alkaline soil, water deeply and less often, keep emitters away from trunks, plant at the right depth, and break through caliche so roots drain. For iron-hungry favorites like roses or fruit trees, plan a yearly FeEDDHA treatment.
Related guides and services
Yellow leaves FAQs
Plants turning yellow?
We check watering, drainage and soil, treat chlorosis with the right iron, and replace plants that will never thrive here. Free, written estimate.
Las Cruces Landscaping Group
1921 Santa Ines Drive, Las Cruces, NM 88011
(575) 270-0676. Mon to Sat, 7 a.m. to 7 p.m.
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