20 March 2007

Laurel wilt disease

Boy, we keep rolling out the good news here.

Laurel wilt disease is the newest problem that may soon reach our area. It is a rapidly spreading non-native fungus spread by the Asian ambrosia beetle that is killing sassafras, laurel, and spicebush (members of the laurel family) in the Southeast. The outlook is not encouraging. This would also be bad news for various swallowtail butterflies adapted to them. This is a very good example of why we need to regulate the provenance of plant material. Tree nurseries have spread many diseases in the past, and it seems, will continue to do so.

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