Plant guide:ðŸŒŋ Colocasia (Taro / Elephant Ear)
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Nutrients

Nutrient Deficiency Yellowing in Colocasia

Commonly affects: Colocasia esculenta (Taro / Elephant Ear)

Leaves turn pale yellow-green overall, or develop yellowing between the veins while veins themselves stay green, distinct from simple old-leaf senescence.

Potential Causes

  1. 1Nitrogen deficiency causing overall pale, yellow-green colouring, especially likely given Colocasia's fast growth and heavy nutrient demands
  2. 2Iron deficiency causing interveinal yellowing (veins green, tissue between them yellow), sometimes linked to soil pH
  3. 3Depleted potting mix that hasn't been fed adequately for this fast-growing plant

Solution Steps

  1. 1Feed regularly with a balanced, nitrogen-rich fertiliser during the growing season to support this fast-growing plant's demands
  2. 2Apply a chelated iron supplement if interveinal yellowing (green veins, yellow tissue) specifically is present
  3. 3Check soil pH if iron deficiency symptoms persist despite feeding, since overly alkaline soil limits iron availability
  4. 4Repot into fresh potting mix if it's been a long time since the last repot

Prevention Tip

The specific yellowing pattern matters — overall pale colour points to nitrogen deficiency, while green veins with yellow tissue between them points to iron deficiency.

More Nutrient Deficiencies Problems

See all →
Phosphorus Deficiency — Purple-Tinted Leaves & Stunted Growth — monstera plant care

Phosphorus Deficiency — Purple-Tinted Leaves & Stunted Growth

Zinc Deficiency — Small, Distorted New Leaves & Shortened Internodes — monstera plant care

Zinc Deficiency — Small, Distorted New Leaves & Shortened Internodes

Manganese Deficiency — Young Leaf Interveinal Chlorosis & Pale New Growth — monstera plant care

Manganese Deficiency — Young Leaf Interveinal Chlorosis & Pale New Growth

Boron Deficiency — Deformed New Growth & Hollow Petioles — monstera plant care

Boron Deficiency — Deformed New Growth & Hollow Petioles

Real Colocasia grow diaries

Growers on DailyGrowers log their plant week by week, one photo at a time. Here's how theirs are going.

Colocasia Mania1 week

Colocasia Mania

@ccolocasimania

Colocasia hybrid mania1 week

Colocasia hybrid mania

@ccolocasimania

Colocasia mania1 week

Colocasia mania

@ccolocasimania

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