I have window boxes that get baked in the hot sun most of the
day. Can you suggest some annual flowers that can take this
southwest exposure and still look fresh?
You did not say how big your window boxes are, but the following
plants should do well in typically purchased window boxes. These
same plants will also do well in flower beds that have a hot
southwest exposure. When you plant your window boxes, mix about one part compost to two
parts potting soil to help hold moisture and provide some nutrients.