Once all the infected areas of the tree are cut away, treat the tree with fungicide to prevent the blight from spreading and infecting new parts of the tree. This will help prevent the blight from spreading to healthy parts of the tree. When pruning away potentially infected branches and other parts of trees, dip your pruning shears in bleach before you make each cut. In extreme cases, you might have to remove your tree, though you can try fumigating your soil with chloropicrin first. The tricky part to addressing Verticillium wilt is that it lives in the soil, so pruning dead branches stems with browning leaves might not be enough. One of the most pernicious and dangerous kinds of blight, this wilt affects many kinds of plants, from hemp to vegetables to maple trees. As a precaution, you can inject your elm trees every two to three years with a protective treatment, which will at least reduce their chance of contracting the disease. Dutch ElmĪ type of blight specific to elm trees, this fungal infection can be spread by beetles. There is no cure for chestnut blight, so prune diligently when it pops up. This blight is incredibly deadly and capable of killing entire populations of hardwood trees. Hardwood trees of all kinds, not just chestnut trees, can be infected with chestnut blight. Once all the pruning is complete, use a fungicide to kill the blight and prevent future outbreaks.ĭon't let the name of this tree blight mislead you. Cut away all infected areas of the tree, and cut several inches above these areas to prevent the blight from spreading and ensure it has been fully removed. Over time, dothistroma blight can kill a tree if it's not treated.Īt first signs of either one of these types of blight, the infected tree should be pruned. Dothistroma blight kills needles on evergreen trees. This blight also stunts growth in new shoots, which can ultimately make the tree look malformed. Diplodia blight makes needles of pine trees turn brown. Almost all species of pine can potentially be infected with diplodia and dothistroma blight.
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