Generally, those plants which produce an edible fruit such as tomato, pepper, eggplant, blackberry, peach, apple, etc., require the full-sun condition. Flowers have different requirements depending on the kind. Placement of porta-plant containers is also very important. Even if a plant requires a full-sun condition, afternoon shading of the intense western sun may be beneficial. Also remember the wind.
Wind can be devastating.
I have found that a northeastern exposure, if available, is the best because of the protection it allows from prevailing strong southern winds and hot evening sun. Protection should be provided when weather cold fronts cause northern wind gusts. If you don't plant the best varieties of plants for your area you are doomed before you begin. The names of best- adapted plants can be obtained from experienced growers, the county Agricultural Extension agent or trustworthy nurserymen. Smaller growing or determinate varieties are best suited for porta-planting because of the limitations of container size.