I think this is a weed with my helenium double trouble. Can you help?
These two are the questionable plant
This is the helenium
The stems are different. The mystery has smoothe round stem. The helenium has stripes and a "fin" on the stems
Helenium
Mystery
The base of the two next to each other
The leaves are similar. But not quite the same
Any help appreciated! Thanks in advance
