Symptoms and control of pseudobulb rot in orchids, and orchid care tips

Symptoms Orchid pseudobulb rot is a bacterial disease. It mainly occurs on tiller buds. Initially, a water-soaked lesion the size of a mung bean appears at the base of the bud, then becomes a large dark green, scalded-looking patch that spreads to the outside of the bud sheath, showing dark brown decay, and the diseased leaves are easy to pull out.

Control Restrict the soil moisture content. For already diseased potted flowers, watering should be stopped, and watering resumed only after the disease is brought under control. When new shoots emerge 4-5 cm above the soil, spraying with a 0.01% boric acid solution or a 1000-fold dilution of diklone or shakujing has a certain effect. Agricultural streptomycin can also be used for control.