Take a peek at this plant. She said the tag called it a "Tall Fall Daisy" and it's getting these weird brown stems - apparently they die off one at a time. As you can see from the photo - one is in full "die-mode" and there's one that's met its demise right next to it.
I have no idea what would cause it to do that. The other stems are seemingly happy but apparently they eventually falter too.
Any ideas what might be causing this?