Problem-specific reference photo
under review
Problem-specific reference photo under reviewunder review
Nutrition · Plant health field guide
Possible magnesium deficiency
Magnesium-related chlorosis commonly begins on older foliage, but several root and pH issues look similar.
WatchPossible cause—not a diagnosis. Compare the visible signs, plant identity, and growing conditions before treating.
Signs you may notice
- older leaves pale between veins
- marginal yellowing
Safe first checks
- Compare old and new leaves and check roots, pH, and complete feeding history.
- Photograph the affected area in clear natural light.
- Review recent changes in light, temperature, water, feeding, or location.
- Change one likely cause at a time and record the result.
Can look similar to
Overlapping symptoms are common. Compare these alternatives before choosing a treatment.
- nitrogen deficiency
- root stress
- natural senescence
What to avoid
Do not make several care changes at once; that makes the response harder to interpret.
Record and follow up
Photograph the same area again and record one change at a time. Compare new growth and whether the symptom spreads, stabilizes, or improves.
Seek qualified local help when damage is severe, rapidly spreading, or may involve a regulated pest or disease.
Compare nearby possibilities
