Claire WhitakerBy Claire Whitaker

Updated November 2026

Calla lily yellow leaves are usually a sign of one of three things: soggy roots, a plant entering its natural dormancy, or a nutrient shortage. This guide walks you through how to tell which one is affecting your plant and what to change so the foliage turns green again. Most calla lilies recover within a few weeks once the real cause is corrected.

Step 1: Check the Soil Before Anything Else

Push a finger about 2 inches into the soil. If it feels wet or muddy, overwatering is the most likely culprit. Calla lilies grow from rhizomes that rot quickly in waterlogged conditions, and rotting roots cannot deliver water or nutrients to the leaves, so the foliage yellows from the bottom up.

Shopping for one? See our guide: Are Calla Lilies Annuals or Perennials? Zone-Based Answer (2026).

If the soil is bone dry and the leaves are crisp at the edges, underwatering is the problem instead. Either way, adjusting moisture is the first fix to try.

Step 2: Determine Whether the Plant Is Going Dormant

Calla lilies naturally die back after flowering or as temperatures drop. Yellowing that starts on the oldest leaves and moves steadily upward, with no new growth, often signals normal dormancy rather than a health problem. Stop fertilizing, reduce watering gradually over two to three weeks, and let the foliage fade completely. Store the rhizomes in barely moist peat or sand at around 50 to 55°F if you are overwintering them.

Step 3: Correct Light, Temperature and Nutrients

If the plant is actively growing and the soil moisture is right, look at the rest of its environment:

  • Light: Bright, indirect light for most of the day. Too little light leads to pale, weak leaves; harsh afternoon sun can scorch and yellow them.
  • Temperature: Keep plants between roughly 60 and 75°F. Cold drafts and sudden swings cause leaf stress.
  • Nutrients: A balanced, diluted liquid fertilizer every 3 to 4 weeks during the growing season supports healthy green leaves. Yellowing between the veins can indicate nitrogen or iron deficiency.

Step 4: Inspect for Pests and Rot

Turn leaves over and check the leaf axils and stems for aphids, spider mites or mealybugs. Mites cause stippled, bronzed yellowing, while aphids leave sticky residue. Gently pull on the rhizome if it is in the pot; a soft, mushy base or a sour smell means rot has set in. Remove affected leaves and cut away any damaged rhizome tissue, then repot in fresh, well-draining mix.

Quick Checklist

  1. Test soil moisture two inches down before watering.
  2. Confirm whether yellowing started on old leaves (possible dormancy).
  3. Move the plant to bright, indirect light if it is in harsh sun or deep shade.
  4. Apply diluted fertilizer only during active growth.
  5. Inspect undersides of leaves and the rhizome for pests or rot.

Common Mistakes to Avoid

  • Watering on a fixed schedule instead of checking the soil.
  • Using pots without drainage holes, which traps water around the rhizome.
  • Fertilizing a dormant plant, which can burn roots and worsen yellowing.
  • Removing green leaves that still have color, which reduces the plant’s ability to recover.
  • Assuming every yellow leaf means disease before ruling out normal aging.
  • Soil moisture meter: Takes the guesswork out of watering and helps you catch overwatering early. View on Amazon
  • Well-draining potting mix: A chunky, aerated mix keeps rhizomes from sitting in water. View on Amazon
  • Balanced liquid houseplant fertilizer: Supports green foliage during the growing season when used at half strength. View on Amazon

If you are also troubleshooting other flowering plants, our guides on Peace Lilies Yellow Leaves: Causes and Fixes That Work and Yellow Leaves on Orchids: Causes and Fixes That Work cover similar moisture and light problems. For general diagnosis, Why Are Plant Leaves Turning Yellow? Causes and Fixes is a useful starting point.

FAQ

Should I cut off calla lily leaves that have turned yellow?

Yes, once a leaf is fully yellow it will not turn green again, so removing it at the base keeps the plant tidy. Leave leaves that are still mostly green, because they continue to feed the rhizome.

Why are only the bottom leaves of my calla lily turning yellow?

Older lower leaves yellow first when the plant is naturally aging, or when soil stays too wet and roots struggle. Check moisture and drainage before assuming anything more serious.

Will yellow calla lily leaves turn green again?

Leaves that have fully yellowed will not recover, but if the plant is healthy and the cause is corrected, new leaves should emerge green. Persistent yellowing on new growth usually means the problem is still active.

Conclusion

Calla lily yellow leaves are almost always fixable once you identify whether the cause is moisture, dormancy, light or nutrients. Start with the soil check, then work through the checklist above. If the rhizome is soft or the problem continues after two to three weeks of correct care, consult a local extension office or experienced nursery professional.

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Claire Whitaker

About Claire Whitaker

Claire Whitaker is part of our editorial team and reviews and edits our plant care Q&A guides, checking product details against manufacturer specifications and owner feedback.