Petrea is a genus of evergreen flowering vines native to tropical Americas. The genus was named in honour of Robert James Petre, an English patron of botany. Petrea volubilis is commonly known as purple wreath, queen's wreath or sandpaper vine, native to tropical America, that is valued especially for its display of violet flowers. Petrea will tolerate a range of conditions once established, from moist to dry but perform best in full sun to part shade in moist but well-drained soil. They will tolerate coastal conditions as long as they are protected from strong wind.
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