Pests of Croton

Major pests of Croton are:-

1.Croton Mealy bug: Planococcus lilacinus 

croton mealy bugSymptom of damage:

  • Infestation – underside of leaves, the base of petioles and nodes of tender shoots.
  • Infested plants give the withering appearance.

Identification of the pest:

  • The body of the scale is covered with white wax like mealy substance.
  • Small, soft-bodied insects.
  • Female is wingless, oval body clothed with white threads.


  • Maintain adequate shade
  • Destroy nets of red ants and cocktailed ant
  • Dust Quinolphos 1.5% or methyl parathion 2% or malathion 5%
  • Spray the affected patches with Quinolphos 25 EC 2ml per lit of water.
  • Conserve natural enemies like predatory ladybird beetle, Cryptolaemus montrouzieri parasitoid Leptomastix dactylopii.


2.Croton Brown scale: Saissetia coffeae

croton scale

Symptom of damage:

  • Feed from the underside of the leaves along the midribs.
  • Affected plants lose their vigour and the leaves dry off.

Identification of the pest:

  • Nymphs – yellow, greenish-brown or dark pink, flat and oval.
  • “H” shaped yellow mark (Half-grown scales)
  •  Adult – Female is a hemispherical, body is covered by a brown hard shield.


  • Control ants as in the case of mealy bugs.
  • Remove and burn weeds which harbour the scale.
  • quinolphos 25 EC 2ml per lit of water.


3.Croton caterpillar: Achaea janata 

croton caterpillar

Symptom of damage:

  • Caterpillars  feed on the  foliage
  • Denuding the leaves leaving veins  and   petioles


  • Hand picking & destruction
  • Grow  seedling on elevated benches
  • Increase  plant  spacing in nurseries
  • Spray malathion or quinalphos at 2ml/lit of water




  • TamilNadu Agritech Portal
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