W>I can tell you this isn't the case in Oklahoma.  I only  know of a few
W>places it grows, and
W>I haven't heard *anyone* complain about it's invasiveness...  I have to get
W>some of this,
  Perhaps I confused you, Wl-Ski. Let me start again. I have two rows in
  my garden of comfrey, which are still where I planted them 25 or more
  years ago. I do not cultivate close to them, because I did, once, and
  ended up with a double row. I saw a friend cultivate through his row
  of comfrey when he decided to tear it out with a tractor. Next year he
  had a half acre of the stuff spread over the entire end of the field.
  I took that lesson to heart! :-)
  Even so, the occasional leaf sprawls beyond its parents' boundary, and
  if we have a lot of moisture, I'll find the row getting wider again.
  Since comfrey makes such good fertilizer, I followed one method I had
  heard of just laying fresh leaves around the plants you wanted to
  nourish. That wet spring, I found comfrey among my cabbages, and
  immediately ripped the baby plants out. Boy, that was a narrow escape!
  Normally my soil is too hot and dry to start leaves that way, but -
  the unexpected happens! :-)
  As long as comfrey does not have its roots cultivated or otherwise
  disturbed, and as long as a wet year doesn't support leaves rooting
  all by themselves, you can confine comfrey. I've found even 6 inches
  is too close for comfort - a full foot beyond the apparent root zone
  keeps things mostly under control. Once the comfrey decides it's happy
  where you want it to grow, do not mulch it, as even mulching favours
  sideways expansion of the row. It will form its own mulch when the
  leaves die back, and after a couple of years, that area is weedfree
  anyway.
W>Well, this has got to be the reason that it doesn't become a problem, here,
W>in Oklahoma... we don't have much "damp soil"!     Well, it doesn't stay
W>"damp" for very long, at least...
  I would gladly send comfrey roots to those who are searching for it,
  but I won't do it illegally. For that matter, I think it can be
  obtained by seed from Richters, an option I never knew existed until I
  just checked their catalogue. AFAIK, comfrey had to be started from
   roots - especially the more medicinal kinds. But if all else
   fails...
W> SP>  * QMPro 1.52 * Of people born in 1839, 100% of carrot eaters are 
ad.
W>Whew, am I glad I wasn't born in *that* year!  :)
  Me too! I love sweet organic carrots. :-)
                  ...Sandra...
---
 * QMPro 1.52 * Well, to be frank, I'd have to change my name.
--- WILDMAIL!/WC v4.12 
---------------