Jasmine Plant Diseases: Identification and Control

Common Jasmine Diseases

Jasmine is relatively hardy but susceptible to a few diseases. Good watering and fertilizing practices reduce risk.

Leaf Blight

Symptoms: Red-brown circular spots on upper leaf surfaces; rapid spread in rainy weather; leaf curling and marginal drying; severe cases affect shoots, buds, young branches. Reduces flowering but not fatal.
Control: Spray with Bordeaux mixture (fungicide/bactericide used for decades on fruits, nuts, vines, ornamentals—per UC IPM).

Rust

Symptoms: Yellow-orange pustules on all plant parts; distortion as disease progresses.
Control: Prune affected tissue; follow with copper or sulfur spray.

Wilt

Symptoms: Sectional wilting; slow root death; blackened, girdled roots with white mycelia.
Control: Treat soil with Bordeaux mixture.

Prevention

Water at base (not foliage), ensure good drainage, avoid overcrowding, sanitize tools.