The Lanai is built and now its time to finish the job. I would like to cover up that directly west facing wall in back with some greenery but I need your help. My initial thought is to put some root barrier in and stick some Raphis Excelsa back there. I have some I can put there however, who doesn't like something a little less common, am I right? I was originally planning on bamboo as the background but the thatch ended up being way too close to the wall, inches in fact. So whatever I put there needs to be able to handle heavy shade, not get too wide, and not exceed the 7-9ft height range. I would prefer something that can fill in and hide the wall. The light looks a lot darker in the picture than in reality since this picture was taken at sunset. I guess I should also mention that I am located in central Orange, CA between sunset zones 22 and 23. My garden theme is a SoCal tropical Hawaiian vibe (Original, I know), however I have really lost focus by falling victim to the Dypsis bug. I appreciate all the perspectives and knowledge that is available on PT so I am thankful for anyone who is willing to weigh in.