Cardamine hirsuta
Christian Lachaud (Fri, 05 Apr 2013 23:13:39 PDT)

Russ,

Many thanks for your kind advice.

One major problem with hunting this weed regularly is that it has important
size variations. The tiniest specimens will hardly measure more than 1cm.
They will produce just one or two flowers and a few seeds, enough to
generate 5 to 10 descendants. These invisible specimens will always escape
the gardener's hunt. But you are also correct : there is no other choice
than performing a systematic tracking in order to keep the problem under
control.

*Dr. Christian M. Lachaud, PhD*
_________________
http://www.saffron-crocuses.com/