A mossy, fibrous growth on rose bushes caused by a wasp larva, sometimes used decoratively or medicinally.
From Persian 'bedewār' (meaning 'brought by wind'), referring to this plant gall, adopted into English in the 1600s through medical and botanical texts, the term reflecting its mysterious origin.
The bedeguar is nature's sculpture—a wasp lays eggs in a rose stem, and the plant responds by growing this incredible feathery ball that looks like fuzzy coral. Medieval herbalists thought it had magical healing powers!
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