Decided on star jasmine for my back fence. I’ve ordered a 3l pot which is 120cm in height, and want to plant into the ground which is currently still grass. Any tips? Does it need some trellis or similar to get going? The listing said it self climbs but I wonder if that means once it’s established? Undecided whether to plant centrally, or to one side and perhaps add a second one if I don’t get the spread I’d like.