What causes black spots on orchid leaves

Black spots on orchid leaves are caused by black spot disease, which leads to leaves turning yellow and withering. Therefore, it must be dealt with promptly to help the branches and leaves recover their vitality. Remove the diseased leaves in time, and spray with Bordeaux mixture or Topsin, or Sterilizing Ling, until the disease is completely eliminated. Pay closer attention during subsequent care.

Causes of black spots on orchid leaves

When black spots appear on orchid leaves, they are caused by a disease called black spot disease. In the early stage of black spot disease, small reddish-brown or purplish-brown spots appear on the leaf surface, and as the disease progresses they expand into dark black lesions, eventually causing the leaves to turn yellow and wither in severe cases.

1. Solutions

1. Black spot disease on the dwarf water lily is actually fairly easy to deal with. First, when the disease is relatively mild, promptly remove the diseased leaves, then disinfect with a Duolingjun solution, and finally place the plant in a well-ventilated environment; after some time, the leaves will gradually improve.

2. When black spot disease is relatively severe, pesticides must be sprayed promptly, for example Bordeaux mixture or Topsin, or Sterilizing Ling; spray twice a week until the disease is completely eliminated.

2. Care and management

To prevent black spot disease on the dwarf water lily, keep light adequate during routine care, and be careful not to keep it in shade or full sun for long periods. Keep it in a warm environment year-round, and avoid low or high temperature conditions. Watering and fertilizing must be done in appropriate amounts, and be careful not to give too much or too little.