The smell alone is what attracts people to plant Downy Jasmine. It is a low maintenance plant but it does have some special care.
The plant needs a lot of water, especially when in bloom. Keep the soil slightly moist. Pot should have drainage hole. Water the plant when top soil (1-2 inches) is dry to touch.
Add composted cow manure to enrich soil. The vine-like growth requires regular trimming to keep the plant the height you need and the shape you want. Give it a hard pruning in spring — late March to early April. Do not prune after late summer.