Hi. Seeking advice to help me with a recent acquisition. Fell head over heels for this p. Leuco (Iris Bell (Isel) aka Bosnian because of its incredible trunk. When it comes to large needle pines, am a total newbie aside from the various Aust. & Black pines I acquired over the last six months. So, any suggestions on when to prune, shape/open up branches, optimum soil, mess with potting, or perhaps just let it sit for a while? Not much out there on these yet. This was a costly albeit not regretted impulse buy. Actually stoked - it is so beautiful. Pics don’t do it justice. The chair in second pic give clue as to large size. Thank you in advance.