Answer: There are numerous types of jasmine (as well as some plants that are commonly called jasmine, but are not), and some of them are evergreen, some are semi-evergreen, and some are deciduous. You may have a deciduous one that is dropping its leaves seasonally. Lightly scratch some of the bark tissue. If it looks green, I wouldn't worry about it. It will probably start leafing out again. As it starts leafing out, fertilize with a product such as Miracle-Gro (15-30-15) which will help both foliage and bloom. Water thoroughly before and after fertilizing. For the health of your plant, try to monitor it regularly and start a program against the aphids before they get out of control. If you get them early enough, you can blast them off with a hose. Good luck!
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