Viability and spore (conidia) production expressed as proportion sporulation of boxwood blight pathogens Calonectria henricotiae (Che) and C. pseudonaviculata (Cps) in diseased detached leaves after increasing exposure to hot water at a) 47.5 C, b) 50 C, or c) 52.5 C (average of two experiments with error bars representing standard error).