Winter jasmine blooms from June to October in the Southern Hemisphere, and from March to April in the Northern Hemisphere. Summer jasmine blooms from April through June in the Northern Hemisphere, and from November through January in the Southern Hemisphere. Flowers form on the previous year’s growth. Pruning immediately after flowering gives that growth time to mature so your plant can flower fully next season.
If the vines are tangled, cut away the smaller branches to reveal the main vine. Then you can separate it from others and retrain it.
Once every other year, identify weaker vines that are thin with fewer blooms. Cut them down to ground level as well. This will encourage the plant to grow stronger vines. Aim to cut back no more than ⅓ of the total vines.
Branches that cross other branches will rub against each other and damage each other. Remove the branch that isn’t growing in the right direction relative to your supports and the way you’ve trained the vines. Thinning the growth will keep your jasmine vines looking neat and encourage better flowering.
Shortened vines will grow back within 1 or 2 seasons. Jasmine can handle heavy pruning, so cutting back to this height shouldn’t impact the plant’s flowering next season.
Tie tight enough that the vine will stay in place, but not so tight that you damage the vine. Check your twine once a week or so to make sure it’s not digging into the vine.
In addition to dead or damaged leaves and stems, you can also remove stems that are growing out directly from the fence or other supports.
Once cut back this way, your jasmine may not flower again for 2 or 3 years.
After pruning, use a hoop or wire trellis in the pot to help support the vines if you want your jasmine to grow vertically. You can also let the vines hang over the edge of the pot. Indoor jasmine may bloom year-round, but requires a rest period during the fall. [8] X Expert Source Melinda MeservyPlant Specialist Expert Interview. 18 August 2020. Keep the non-flowering plant in a dark area, don’t fertilize it, and limit watering for 4 to 5 weeks. [9] X Research source
If your jasmine is dropping leaves, this may be a sign that it’s not getting enough sun. Try to move it to a place where it can receive more direct sunlight.
Avoid regular pruning while the plant is blooming, except to remove dead flowers and foliage. Follow up with a hard pruning when blooming has stopped. Give the plant a couple of weeks to recover before resuming your weekly trimming routine.
Repot when roots start growing through drainage holes in the pot, or when you can see roots through the top of the soil. Your jasmine’s new pot shouldn’t be more than 1 or 2 inches (2. 5 or 5. 1 cm) larger than the old one.
The best time to do root-pruning is right after the plant has bloomed. Remove the plant from the pot and cut back 1/3 of the roots from the outside and base. At the same time, cut back the plant’s foliage until it is about 1/3 its original size. Do not root-prune unless you top-prune as well.
Generally, the lowest wire or wooden batten of your support structure should be at least 12 inches (30 cm) 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.
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. [16] X Research source When you plant your jasmine, set it out 8 to 12 inches (20 to 30 cm) 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 46 cm) away from the wall or any solid structure, so it has enough room to develop a complete root system.
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.
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.
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.
