Black Leg Disease - Houseplants Disease and Control

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Houseplant Disease, Black Leg disease

Black Leg Disease

Black Leg disease is a disease of stem cuttings where the base of the cutting turns black. The symptoms manifest as oval, sunken, light-brown to black cankers with purple-to-black margins near the base of the stem. The cause of the disease is bacteria and the predisposing factors are waterlogging and overcompaction of the soil which prevents proper drainage. Pelargonium cuttings are especially susceptible to black leg disease.

  • Remove and discard the infected cuttings as soon as possible.
  • Ensure the soil is kept drier and well-drained whenever you are rooting stem cuttings.

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