I have an empty bed in my garden about 4m wide and 3m deep. It is in full view from the kitchen window. It slopes upwards away from the house, and is the upper of several tiers, so it is at a higher level than the house, so I don't want too many dense tall plants to obscure the view of what mischief the kids are getting up to beyond. It will also be viewed from the other side so needs to look reasonable all round. It is in full sun and quite dry because of the slope. We have normal soil. I have no idea where to start to fill this space. Suggestions please........