Wild and domestic rose petals, leaves and bark may be used for tea.  Traditional record suggests all of these teas may be helpful in stemming diarrhea.  Take some rose tea with you on vacation for protection from loose bowel problems.

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The fruiting body the rose hip is over rated as a health food.  Most varieties have little edible tissue, typically dry and very seedy.
Roses represents Monks tending the garden in this representation of Medieval Villandry on the Loire River, France.