I'm thinking about planting a palm tree in one of my garden beds and I need advice on what palm best suits my climate and the location I want to put it. I live in Ballarat about an hour from Melbourne in Victoria and we get quite bad frosts and also severe heat sometimes. Here are some pictures of where I want to plant a palm (where the black pot is sitting) and im thinking maybe a cocos palm or a foxtail palm , is it a suitable place to have a palm tree? and will the roots effect the retaining wall? Any advice is appreciated