SPEC: I. pseudacorus
- Subject: SPEC: I. pseudacorus
- From: I* E*
- Date: Tue, 23 Jul 2002 10:16:33 -0500
A few years ago, I ran two conferences on invasive species, one in
Gainsville and one in Ottawa. At that time, I undertook a review of
the yellow flag as a serious invasive and found that it was only a
serious pest in a couple of locations, both lakes in the warmer areas
of British Columbia and Washington State. In most other areas in North
America, it is better desribed as a minor pest and often tolerated as is
the "wild" day lily that one sees in ditches throughout the NE.
The species is, however, a very strong plant and I have measured one
plant in Florida which was 8ft high!
Ian, in Ottawa where a massive application of nematodes seems to be a
significant step towards borer control.
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