Hi Adam:

The invasiveness of Buckthorn apparently is somehow related to the
proximity of Lake Michigan. The closer to the lake the worse the problem
becomes.

On the other hand, downstate where the temps are milder, like near the
lake front, the buckthorn is not a problem. The remainder of zone 5 to
the east and west of this region is also apparently free of buckthorn
gone wild.

A complex issue at best. The more we learn the more we understand how
little we know.

The open sharing of knowledge, not simply information on this listserve
provides for continuous learning which is one of the reasons why I enjoy
Pacific Bulb Society so much. It keeps me young and provides almost
constant opportunities to look at the plant world with a slightly
different perspective every day.

Boyce Tankersley
Director of Living Plant Documentation
Chicago Botanic Garden
1000 Lake Cook Road
Glencoe, IL 60022
tel: 847-835-6841
fax: 847-835-1635
email: btankers@chicagobotanic.org
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