sentences:  Pruning during wet conditions can potentially increase incidence of disease spread through pruning wounds; therefore, prune only when the foliage and bark are dry.Severely cankered trees cannot be restored to good health and should be completely removed from the site and if possible, burned to remove the source of inoculum.To date, there have been no fungicides which have been able to provide prevention or arrest the development of Leucostoma canker on spruce trees