Most of you are familiar with the allelopathy of black walnuts. Allelopathy is
the tendency of a plant to produce chemicals which kill or stunt neighboring
plants of other species. I have been growing the miniature rush, Juncus
maximowiczii, which makes a cute companion plant. Other Juncus species have
been implicated in allelopathy, but I have not found a reference for this
particular one. However, I have found a couple of times that when a clump of it
in a group planting got to a substantial size, the nearest tree went downhill.
So I would recomment not planting it in a bonsai. It should do fine as a
separately potted accent plant.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)