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Pests

Snails and Slugs on Colocasia

Commonly affects: Colocasia esculenta (Taro / Elephant Ear)

Irregular holes appear in leaves, often with a silvery slime trail visible nearby, especially after rain or in consistently moist growing conditions.

Potential Causes

  1. 1Snails and slugs attracted to Colocasia's moist growing environment and large, soft leaves, which are an easy and favoured food source
  2. 2Outdoor or bog-style plantings being particularly susceptible given the naturally damp conditions
  3. 3Nighttime feeding activity making the pests themselves hard to spot during the day

Solution Steps

  1. 1Hand-pick snails and slugs in the evening or early morning when they're active
  2. 2Use iron phosphate-based slug bait, which is safer around pets and other wildlife than older metaldehyde-based products
  3. 3Create physical barriers like copper tape around containers
  4. 4Remove hiding spots like dense mulch or debris directly around the base of the plant

Prevention Tip

Colocasia's naturally moist growing conditions make it especially attractive to snails and slugs — check leaves for holes and slime trails regularly if grown outdoors.