Otherwise known as Night Blooming Jasmine. They bloom at night and are very fragrant. They like partial sun and regular water, and grow rather fast, so you may have to trim it if it gets out of hand.

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Thanks, yeah my friend got it from her aunt who drove to Chicago to give the plant to her for me! The leaves are kind of drropy though and I thought it is watered a little more than it should be. I was wondering if I should remove part of the soil and replace it with fresh one. The plant has new growth though.