Pseudomonas Blight

Pseudomonas blight causes blighting and dieback of shoots and foliage during cool, wet conditions. This bacterial disease spreads through water splash and contaminated tools. Remove infected branches and disinfect tools. Improve air circulation through pruning. Avoid overhead watering and reduce leaf wetness. Apply copper fungicides preventively if needed. This blight is most damaging during cool, wet springs when flower and shoot development is rapid. Monitor plants closely during vulnerable periods.

Avoid excessive and/or late fertilization. Plant resistant cultivars such as Chilcotin, Newburgh, or Nova.