My Jasmine plant blooms but does not show much leaf growth.
Certified GKH Gardening Expert
This is the reverse of the most common issue that I come across. There is too much phosphorus and potassium in the soil, and not enough nitrogen. Adding a high nitrogen supplement will help with this issue.
This article will give you more tips to care for this plant: https://www.gardeningknowhow.com/ornamental/flowers/jasmine/growing-jasmine-plants.htm