Conifers
Austrian Pine
Pinus nigra
This pine has been popular for yard and public plantings for many years. However, a serious needle disease called Diplodia tip blight has infected many trees, causing die-back of branches and, at times, death of trees. Large infected trees are almost impossible to cure with fungicides. Scotch pine is also susceptible to this problem.
Scotch Pine
Pinus sylvestris
This pine is well-known for use as a Christmas tree, and also has been widely planted for a screen or specimen tree. Unfortunately, it is very susceptible to the pine wilt nematode that has spread through the region in recent years. The nematode has no control and is spread by insects to attack other pines, so dead and dying trees should be promptly removed. Stress conditions such as heat and drought can prompt nematode damage.
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