Control measures consist of fungicide treatment of soil mix, fungicide drenches, acquisition of clean planting stock, and using a potting medium that drains well. Affects both the foliage and berries. It first shows up on foliage as small, greenish-yellow spots which later turn black. The berries are marked by small, black scabby spots. The disease is favored by long periods of intermittent rains and mild temperatures.
Primary infection is from the previous year's foliage.
Control is obtained by following a regular spray program and sanitation through removal of plant residues. Causes twig dieback and blossom blight. Infected blossoms wilt and turn black rapidly. The disease progresses from the blossoms into the vascular system where it causes extensive twig death. The foliage does not abscise due to the rapid rate of death.