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[OM] [OT] Fireweed vs. Purple Loosestrife

Subject: [OM] [OT] Fireweed vs. Purple Loosestrife
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Mon, 30 Aug 2004 09:05:19 -0400
Richard's photo of flowering marsh weeds 
<http://people.simons-rock.edu/rlovison/image22.jpg> which he calls 
Fireweed (Epilobium angustifolium) is probably actually Purple 
Loosestrife (Lythrum salicaria).

It's a common mis-identification since Fireweed is a similar looking 
invasive native species in the US while Purple Loosestrife is an even 
more invasive non-native species from Europe and Asia.  I'm sure it must 
be in the UK so perhaps Chris will recognize it now but perhaps it 
doesn't grow so densely there.  Fireweed would prefer to grow in a 
meadow while Purple Loosestrife prefers to have its feet at least damp 
if not wet.

It's a real scourge here since there are no native biological controls 
and the stuff (while pretty) grows so dense that it squeezes out the 
native plants and their dependent wildlife.  My property encompasses an 
acre of eastern Massachusetts wetland and it's everywhere.  It also 
includes a very shallow man-made settlement pond spec'd by the local 
conservation commission.  They couldn't possibly have designed a better 
environment for Purple Loosestrife than that pond... so much for government!

The US Fish & Wildlife Service is now conducting experiments at various 
US refuges aimed at finding imported biological controls... that don't 
also eat everything else.

For much more than you're likely to want to know about Purple 
Loosestrife see:
<http://www.fws.gov/r5mnwr/mnwrls.html> and
<http://www.agron.iastate.edu/~weeds/weedbiollibrary/517%20student%20pages/2000/purple.htm>

Chuck Norcutt


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