Re: Seed Exchange

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I've only ever heard of I. pseudacorus as being seriously invasive among members of the genus; it is considered to be a problem around waterways in numerous places. The other "problem" iris that I've heard about are:

• Iris foetidissima - in New Zealand, not anywhere else that I know of
• Iris douglasiana - in cow pastures in its native habitat. It's inedible and seems to like sprouting in ground that's been churned up by cattle.
• Iris missouriensis - same as douglasiana
  

None of these seem to be viewed as invasive plants in general, though you probably couldn't bring them to Hawaii.

While I don't particularly object to keeping "generic" I. pseudacorus seeds out of the seed exchange, I do agree that seeds of plants with uncommon characteristics (large/small/pale flowers/dark flowers/different markings)Â or wild-collected seeds from its native range (not US) are good to include.

Ken Walker

On 9/18/2012 2:04 PM, C*@aol.com wrote: