It appears my poinsettia did not approve of the tea. Wish I had a before and after - yesterday it was merely droopy. Today it is all black spotted and diseased and floppy (floppy being even droopier than droopy).
Oh, well. Lesson learned - poinsettias don't like Solomon's Seal tea (what we call doong-gool-leh). My fittonia, on the other hand, is doing just fine.
So, 1 for 2. I'm ok with that.