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If you want your jasmine to grow freely up a wall or fence, your supports should be far enough out that the vines can twine around the supports and grow loosely. Generally, the lowest wire or wooden batten of your support structure should be at least 12 inches (30cm) above soil level. This will help prevent excessive dampness and rot, and make it easier for you to prune the lower parts of the vines. Jasmine plants typically are started in pots, then transferred to the garden once they've started growing vines. Set bamboo canes directly in the pots, and twine the young vines around these canes. Vines should start to appear within 4 weeks. Allow the plant to grow until its roots fill the starter or seedling pot, then move outside in early spring. Leave the vines trained around the bamboo canes when you move your jasmine outdoors. When you plant your jasmine, set it out 8 to 12 inches (20 to 30cm) from the supports to make sure the roots of the plant will be exposed to adequate rainfall. Make sure the plant is 12 to 18 inches (30 to 46cm) away from the wall or any solid structure, so it has enough room to develop a complete root system. Take the bamboo canes from the potted jasmine and weave them through the wires or wooden battens of your support to help train your vines in the right direction. Adjust the canes into a fan shape. This will give each of your vines room to grow before they start crowding and tangling with each other. Establishing a strong pattern early makes pruning easier as the plant grows. Tie the bamboo canes into place on the trellis or other support using gardening twine to help them stay in place. Once you've established the shape for your jasmine to grow, get rid of any outgrowing stems or branches that don't contribute to that shape. Trim once a week or so until the first flowering season to keep the jasmine growing in the direction you want. You may find you need to add a new row of bamboo canes to help train new growth. Remove the bamboo canes when your jasmine has formed thick woody stems. From this point, it should climb in the right direction on its own. Although winter jasmine can be grown vertically, it isn't really a climber. Tying vertical branches to a fence or trellis helps encourage the plant to grow upwards and cover the structure. String or twine are effective to tie in winter jasmine. You can also use twist ties. Be careful not to tie so tightly that you damage the plant.
Set supports about 2 inches (5.1cm) away from the wall. Start young plants on bamboo canes. Use the canes to angle the vines up the support. Prune away weak growth that detracts from your main framework. Tie in winter jasmine to train the growth.