Affected branches may show green-brown streaking of the sapwood. What To Do Vigorously growing plants can often compartmentalize the infection within a few branches. Water plants weekly during hot, dry, periods. Maintain adequate nutrient levels with a balanced fertilizer if needed. Prune dead or dying branches to maintain appearance of affected plants.
Available fungicides show only inconsistent results, but research proceeds.
Spores are spread by rain splash and wind , and infect emerging leaves and succulent shoots during cool, wet conditions. The cycle can repeat itself as long as conditions remain wet. In this way, epidemics can develop. Dry weather conditions interrupt the epidemic. What To Look For Symptoms include brown spots along the veins, discrete or blotchy spots anywhere on the leaf, distorted leaves and early leaf loss.