Boxwood Blight Management
Boxwood blight, caused by Calonectria pseudonaviculata (synonyms Cylindrocladium pseudonaviculatum or C. buxicola), is a significant fungal disease affecting multiple species of boxwood across North America. Rain splash, overhead watering, and contaminated tools can all transmit boxwood blight to healthy shrubs. Boxwood blight spreads rapidly when conditions are warm, humid and shady.Download our Boxwood Blight Program
Initial symptoms appear as dark or light brown spots or lesions on the leaves (Figure 1). These lesions often have dark borders. Spots enlarge and then coalesce. Infected leaves then turn brown or straw colored, so infected plants look blighted (Figure 2).
Photos courtesy of Dr. Sharon M. Douglas, The Connecticut Agricultural Experiment Station.
BioSafe Systems’ Management Program
Boxwood blight can be managed successfully through proper sanitation, crop protection, chemigation and rooting health. BioSafe Systems offers a complete and comprehensive management program to prevent and stop the spread of disease.
ZeroTol 2.0 is a broad-spectrum bactericide/fungicide that works on contact to kill plant pathogens and their propagules, including spores. Formulated with our powerful and stable peroxyacetic (PAA) chemistry, use ZeroTol 2.0 starting at propagation through production to protect all greenhouse and nursery crops, including fruits and vegetables.ZeroTol® 2.0