Re: Black walnuts

I understand now why my siberians are not doing well :
 
 they are in is a quare bed of 6m X 6m, in the middle of another square of 10m x 10m formed by 4 big wallnut trees...!
 
 
 The siberians grow, but hardly bloom.
 
Thanks, Jim,  for the info, a little bit of knowledge surely helps!
 i will have to take drastic measures!
 
Loic
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       Loic TASQUIER
       zone 7 - The Nederland
 Email : tasquierloic@cs.com

 www.le-jardin-des-deux-bons-diables.com

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----- Original Message -----
From: j*@kc.rr.com
Sent: Wednesday, March 25, 2009 3:57 AM
Subject: Re: [iris-species] Black walnuts


On Mar 24, 2009, at 9:28 PM, Joan Cooper wrote:

Leaves and roots both emit a poison, juglans,

Actually, the genus is Juglans, the causal agent is juglone.

Here is a paper with basic info: 



Jim

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