In places with harsh winter conditions, consider that living walls may have a dormancy period and may need extra attention to appear attractive all year.
Consider the management needed for plants that will grow vertically and the reach needed to manage/harvest these plants. Also consider the use of basic pulley systems for maintaining hanging baskets.
Maintain overall street visibility by ensuring visual connection between different users of the street, including pedestrians, bicyclists and automobiles, and nearby neighbors, such as residences and businesses. This encourages eyes on the street approach.