How about saving us all some time and providing a link to something
explaining what in the heck you are babbling about? Preferably in English!!!


D. Kauhl wrote in message
...
in all the answers I'm missing the hint for allelopathie, the research of
reciprocal
influences of plants, practicized by friends of "Mischkultur", mainly
explained
by mycorrhizal effects in the edaphone -
founded by H. Molisch, university of Vienna, 1937, "Der Einfluß einer
Pflanze
auf die andere - Allelopathie" -
you can hear more of this from orchid friends, it's their primary focus
best regards
kauhl

"Frank Martin" wrote in message
...
Are some plants better planted in a group of their fellows than just
singly?
My grandmother says some plants are like flocks of birds and do better
in
a
group. Does anyone know about this?