On the leaves, necrotic spots of variable sizes and shapes are noticed. Severely affected leaves wither, droop and dry up.
Spraying 1% Bordeaux mixture at 1-1 1/2 month intervals reduces disease intensity, defoliation and flower bud shedding. The spraying has to be commenced just prior to flower bud formation and continued till the harvest of flower buds for effective control. Destruction of the weed Clerodendron from the clove garden is recommended to reduce the disease since the pathogen survives on this weed during adverse conditions.