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Does Pink Jasmine Bloom on Old or New Growth?

Pink jasmine (Jasminum polyanthum) is a prolifically-flowering winter-blooming vine hardy to U.S. Department of Agriculture Hardiness zones 8 to 11. This vine can survive temperatures to 20 degrees Fahrenheit, dying down to the ground and reappearing in the spring. It needs indoor winter protection in colder climates. Evergreen in frost free climates, this rampantly-growing, twining vine can reach heights of up to 20 feet and can quickly cover a trellis or fence. Its flowers are strongly aromatic.
  1. Planting

    • Pink jasmine tolerates a variety of soil types but adding 50 percent organic matter to the soil is advisable, especially in clay or sandy soils. This plant enjoys a spot in full sun to partial shade that is never waterlogged. After planting jasmine, sprinkle a cup of Epsom salt around the plant and water it well. The magnesium in Epsom salt helps roots become established. For indoor or greenhouse-grown plants, any quality, organic potting soil is suitable. Plants should be repotted when they become root bound.

    Culture

    • Keep pink jasmine slightly moist in summer and fall but slightly dry in winter and spring. Plants in the ground need a slow-release, high-phosphorous fertilizer applied in early summer and early fall. Pink jasmine rests in the spring, so no fertilization is needed. Feed potted plants twice a month with half-strength liquid bloom fertilizer. Don't fertilize plants in spring when they are resting.

    Pruning and Propagation

    • Pink jasmine flowers on 1-year-old wood, so pruning is best done immediately after flowering in the winter or early spring. Only cut back branches that already bloomed. Four-inch tip cuttings are rooted in early summer in moist soil. Outdoor plants may be ground layered by scraping the bottom of a stem and anchoring it to the soil. Seeds can be dried and planted in the early spring.

    Considerations

    • Greenhouse-grown plants need to be moved outside in late autumn or early winter for six weeks to be exposed to mild chilling temperatures. If it does not detect a change in seasons, it will not set buds. Pink jasmine is a common greenhouse plant in Europe, but has become naturalized in Australia and New Zealand and is considered invasive in some areas.