Here's a breakdown:

* Full sun: 6-8 hours of direct sunlight per day. This will result in the most abundant blooms.

* Partial shade: 4-6 hours of direct sunlight, with some afternoon shade. This can be a good option in hotter climates or areas with intense afternoon sun.

While star jasmine can tolerate some shade, it will bloom less prolifically and might grow less vigorously in very shady conditions.

Important note: Young star jasmine plants may need a bit more shade during their first year to get established. You can gradually introduce them to more sun as they mature.