Paving blocks, installed in the manner described below are required within each sidewalk tree pit
when specified by Parks. Exceptions to this requirement are allowed on a case by case basis.
Examples include adequate tree pit guards or non-invasive or competitive under plantings. Please
note that Parks will take action if the tree guard, under planting, or paving endangers the long-term
health and survival of city-owned trees. Parks does not allow tree grates to be installed around newly
planted or existing trees.