Bacterial Leaf Spot and Blast

Leaf spots develop and shoots wilt or become blighted. This indicates serious bacterial infection. Remove affected material and improve conditions.

Remove and destroy infected stems. Disinfect pruning shears before cutting more stems. Remove affected tissue promptly, cutting into healthy wood. Improve air circulation by thinning dense growth and avoid overhead watering during susceptible periods. Preventive fungicide applications may help where the problem recurs annually.