The Public Design Commission may consider aboveground planters when in-ground tree planting is not possible due to subsurface conditions or historic granite slab sidewalks. As with other unique street design elements, a maintenance plan is required.
The Commission encourages the use of planters that are:
aesthetically pleasing and contextually appropriate;
made of durable materials that can withstand the elements;
appropriate in scale to the site; and
capable of providing suitable soil volume and drainage to allow trees to thrive.