Hi I'm new here and hope someone will give some advice.
I would like to add this climber to my garden. The spot I would put it is a wooden planter approx 1m x .5 m and 1m deep on a south facing wall, (in central London) Recently I had a clematis in there which was suffering from wilt i think so I have removed it and most of the roots.

Is this planter is big enough for the star Jasmine ? And what should I condition the soil with if so, when to plant etc?

Thanks in advance
petty at