European Cranberry / Cramp bark / Viburnum opulus
A few of these dwarf European cranberry bushes live in our garden, selected for their pretty foliage. I'm thinking of digging them up this year in favor of something better suited to the partly shaded spots where I have them. They need not just more sun, but better airflow because they tend to get fungi, bacterial spots, and spider mites. However, since they are called "cramp bark," I reckon they have medicinal use. Without spending much time looking them up as herbal medicine, I find that they may be helpful for two different health problems in my household-- asthma and muscle spams.
I wonder if anyone here has experience or book study of this plant. If they are worth harvesting and will save nicely, I would like to do so.