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Species of flowering plant

Andromeda polifolia, common name bog rosemary, is a species of flowering plant in the heath family Ericaceae, native to northern parts of the Northern Hemisphere. It is the only member of the genus Andromeda, and is only found in bogs in cold peat accumulating areas. Andromeda glaucophylla is a synonym of A. polifolia var. latifolia.

The genus was named by Carl Linnaeus who observed it during his 1732 expedition to Lapland and compared the plant to Andromeda from Greek mythology. The specific epithet is a noun in apposition, which Linnaeus based on Johann Christian Buxbaum's pre Linnaean generic designation Polifolia. Buxbaum in turn derived the name from Johann Bauhin, who used it to mean "having polium like leaves". The precise plant that Bauhin meant by polium is uncertain, but it may have been Teucrium montanum. The common name "bog rosemary" derives from the superficial resemblance of the leaves to those of rosemary, which is not closely related.

Many fossil seeds of †Andromeda carpatica have been extracted from borehole samples of the Middle Miocene fresh water deposits in Nowy Sacz Basin, West Carpathians, Poland.

Numerous cultivars have been developed for garden use, all of which require damp acid soil in shade. The cultivars 'Compacta' and 'Macrophylla' have gained the Royal Horticultural Society's Award of Garden Merit. Like most other members of the family Ericaceae, they are acid loving plants (calcifuges), and must be grown in a medium with a low pH.

Bog rosemary contains grayanotoxin, which when ingested may cause respiratory problems, dizziness, vomiting, or diarrhoea.