Q.asian jasmine
We have a lot of asian jasmine planted on a slope next to our pond. Weeds are taking over where the jasmine has not yet spread. Can we put down weed barrier plastic to keep the weeds out without causing the jasmine to be stunted?

A weed cloth may prevent some of the vines from attaching to the soil, if your plan is to have the Jasmine cover the area you may want to avoid a weed barrier.
Mulching can help suppress weeds until the Jasmine covers the area.
https://www.gardeningknowhow.com/plant-problems/weeds/weed-barriers-in-gardens.htm
https://www.gardeningknowhow.com/garden-how-to/mulch/best-mulch-for-garden.htm