permaculture

[FranksFarm@aol.com]

Hi,

I'm still trying to positively ID a plant some of said may be Canadian 
Thistle.

Any pictures of it on the web?  This plant grows to over 6 ' tall , has large 
sharp pointed leaves, globe like balls that turn into lovely purplish pink 
flowers. When they fade they turn into dried out looking brown heads.

Is this plant poisonous to livestock? Look forward to your replies. Thanks.   
Frank