Rhubarb, rhubarb rhubarb
I have two rhubarb plants in recycling containers the black ones for paper I think. Both were bought at the same time as maidens so I didn't take any fruit from it but used the leaves to brew an insect weed killer. This year one plant is looking good apart from some funky browning of parts of the leaves (No chew marks) The healthy ones leaves are around 10" in diameter the other just has stubs of leaves. Could use some advice?? My aunt had rhubarb in her garden that was baked in summer never fed and had barely any soil and thrived I'm at a loss as to the cause.