Re: Clarence's advice on I. pseudacorus
- To: iris-l@Rt66.com
- Subject: Re: Clarence's advice on I. pseudacorus
- From: "Dustin K. Howarth" <HOWARTH@zool.umd.edu>
- Date: Tue, 4 Jun 1996 19:51:44 +0000
- Comments: Authenticated sender is <HOWARTH@zool.umd.edu>
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Clarence Mahan wrote:
> I. pseudacorus is replacing I. versicolor (which is of course a native American
> species)!!!! Apparently, when I. pseudacorus is introduced into the wild,
> its strong constitution overwhelms the native American species.
> I write this to get the word out that Iris pseudacorus should not be allowed
> to go wild...but this seems almost a futile objective since I have seen this
> iris around many ponds and lakes in VA! And the seed is very hardy and
Too true! I happen to work for the Virginia Natural Heritage
Program, and our botanists consider I. pseudacorus to be a dangerous
alien invasive. While not as noxious as Japanese honeysuckle or
purple loosestrife, pseudacorus should be planted with great care.
It is great in a controlled perennial bed or isolated bog or
pond, but please do not plant it near running water or near a wet
natural area. Most important of all, clipping the stalks before seed
pods form lowers the risk considerably.
(Dustin now performs a dismount from the soapbox!)
Happy irising, but be careful out there!
Zone 7a, Ashland (central) Va