

These tropical evergreen or deciduous, twining vines have showy flowers and a milky sap. Plant these generous long-bloomers outdoors in warm climates only. Fast-growing, they need a trellis or other support, though some are trained to grow in hanging baskets and tubs. Start by cuttings. Plant in site protected from summer sun. Pinch to growth to encourage bushiness. Watch for spider mites.
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Alice du Pont
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