How to Care for Swamp Jasmine

Swamp jasmine (Gelsemium rankinii) is also called swamp yellow jasmine and Rankin's trumpetflower. This evergreen twining vine rapidly reaches up to 20 feet and looks similar to Carolina jasmine with its showy yellow, trumpet-like flowers. The flowers that bloom in both spring and fall are not fragrant, however. Swamp jasmine tolerates flooded areas and is native to southeastern regions of the United States, thriving best in USDA Hardiness zones 7 to 9.

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Instructions

- 1
  Plant the swamp jasmine in locations with partial shade to full sun. Choose a site with rich, acidic, moist soil. The ideal pH is 6.8, but it will adapt to most soils.
- 2
  Grow swamp jasmine near a chain-link fence, arbor, trellis or other type of support unless you are growing it as a ground cover. This plant grows well near water gardens and bogs.
- 3
  Water swamp jasmine regularly, particularly for the first season, to ensure the plant's root system becomes well-established. Supply water weekly throughout the growing season whenever rainfall is less than 1 inch. Water the plant more often during hot or dry periods.
- 4
  Apply a balanced fertilizer throughout the growing season as directed on the label. Do not apply any during the winter.
- 5
  Prune the swamp jasmine as needed to maintain size every year in the fall, after the blossoms fade.

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