I was able to finagle my render and scene settings enough to get a version of the scene rendered using path tracing. The glowing plants were eliminated, but I was mildly disappointed at how dark the dense vegetation on the right hand edge of the screen, but if I really think about it, it is probably realistic since the "camera" is focused on the more illuminated background. I'm going to do a bit of post process editing to see if I can get a natural looking version with a bit more light in the shadows.