Affected plants may wilt suddenly and die or they may be unthrifty if only a portion of the root system is infected. A brown discoloration of the wood may be seen in the basal portions of the stems and in the main roots. Plants are much more susceptible when planted in poorly drained areas or planted too deeply. Plant only as deep as the plants originally grew. Drench with a soil fungicide before plants are seriously affected.
Plant are unthrifty or fail to grow.
Select healthy bushes with unrestricted root systems showing active growth for planting. Plant in well-drained soil avoiding sites exposed to full sunlight or to the west sun. Maintain high amount of organic matter in soil and adequate mulch to preserve uniform soil moisture in the root zone. See section on chlorosis.