What Are Common Elm Tree Issues

Elm Trees Damaged by Dutch Elm Disease

Elms once lined the streets of many towns and cities. In the 30's, Dutch elm disease almost completely destroyed these lovelies. But they are making a huge comeback, thanks in part to the creation of resistant types. Elm tree diseases still have a significant role in the life of a tree and thwart their care. Anyone with an elm in their outdoor space must recognize common elm tree issues so they can promptly handle them.

Elm Trees Diseases

Many elm tree leaf diseases create defoliation and discoloration. When the leaves fall, the spots have often grouped, and other discolorations have established, making it difficult to differentiate without testing.

Elm tree diseases that affect the leaves are due to fungi, however elm leaf scorch, due to a bacterium, is slightly different. With this disease, the vein bundles in the leaves get blocked so that water can’t travel in the leaf. This makes the leaf appear scorched.

The most destructive elm tree diseases are elm phloem necrosis and Dutch elm disease. Dutch elm disease is due to a bacteria spread by beetles. White-banded leafhoppers disperse the microscopic bacterium that creates elm phloem disease.

Elm Trees Disease Treatments

Once elm tree leaf diseases get hold, there is no real treatment. Burn and rake leaves to stop the development of the diseases. If you have issues with leaf diseases, try applying an anti-fungal spray in the early part of the next year. This may help stop the disease.

There is also no cure for elm phloem or Dutch elm disease. Trees contaminated with Dutch elm disease sometimes react to pruning. This is a treatment that prolongs the life of the tree for many years if caught early and done correctly. It’s best to employ a certified arborist for the work. Trees infected with elm phloem necrosis must be cut down immediately. 

Since there is no simple cure, it is vital to know how to safeguard your elm trees from any disease. You should watch for the bugs that spread elm tree diseases and begin a control program immediately.

​

---