@candyquilt-- Beware of commercial plum teas because many do not even have plums in them.
I bought plum loose tea online and I was shocked to find out that it doesn't have real plums but rather "plum flavoring." It turned out to be mostly a herbal tea mix with hibiscus, cranberry, rose hips and cinnamon. It tasted okay, but it wasn't what I wanted. I wanted plum tea and had imagined small dry pieces of plum in the tea.