Jasmine (genus Jasminum) is a tropical plant with over 200 species native mostly to Asia, Africa, and Europe. For growing in the United States, jasmine plants will grow hardy in zones 9 to 11. Jasmine grows as a woody shrub, trailer, or climber, producing delightfully scented white flowers. If you care for your Jasmine plant correctly, it will grow up to 2 feet (60 cm) each year.
Soil and Light
Jasmine is a fairly flexible plant when it comes to sun and soil. It can flourish in full sun or partial shade, and it can be planted in well-draining sandy loam or considerably clayey garden soil. Jasmine plants should get plenty of sunlight, but they should be kept out of direct mid-day sun if possible. Working compost like moldy leaves into the soil and fertilizing lightly once a year in the spring is helpful. If growing indoors, make sure that Jasmine receives at least 4 hours in a window that gets full sunlight in the winter.
Because of their fast growth, make sure you space Jasmine bushes out considerably. Plant Jasmine with at least 8 feet (2.4 m) of spacing between bushes from June to November. For indoor container planting, start in the autumn. Young plants may need support from staking.
Jasmine will not survive frosty cold weather. Keep air temperatures between 50 and 78 degrees Fahrenheit (10 and 25 degrees Celsius); better yet, maintain air temperature between 60 and 75 degrees (15 and 24 degrees Celsius).
Fertilize Jasmine with fertilizer higher in potassium and phosphorus than nitrogen. Fertilize after a heaving pruning and again in June. Fertilize more often if Jasmine isn't producing much growth or flowers, but no more often than bi-weekly.
Water Jasmine plants immediately after planting. Water weekly or whenever the top inch (2.5 cm) of soil dries out until the plant is fully established. Leaves may fade to yellow or brown if the soil is too dry or moist. Most jasmine plants grow between 10 to 15 feet (3 to 5 m) high and 3 to 6 feet (0.9 to 1.8 m) wide.
Pruning and Pinching
Pinch off new blooms and shoots from spring through August to encourage more growth, especially sideways. If your Jasmine plant grows too large, prune it down to the desired size. Cutting down the entire plant to half its size each spring will help keep Jasmine growing tight and full, and it will encourage a higher number of blossoms. Most Jasmine plants will begin blooming in January (cut down to half size after blooming stops). If growing Jasmine vine as a ground cover, prune off any vertical growth.
Jasmines are most easily propagated by cutting off branch ends with at least 2 or 3 sets of leaves, pulling off the bottom set of leaves, and planting in a pot with dampened peat moss. To retain a moisture-rich environment, cover the pot with a plastic sheet, trying to down to create a tent shape. Keep at around 65 degrees Fahrenheit (18 degrees Celsius) and in a well-lighted area but out of direct sunlight.
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