Urban street trees are usually planted in wells with less space for roots and are often surrounded by hard surfaces that stop rain from watering the tree. The Grella stormwater tree trench on Remembrance Drive uses a different approach. Stormwater tree trenches are a form of low impact development that connects rows of trees through a built underground system that controls, treats, and holds stormwater runoff. The trenches support tree health by providing space for roots and watering the trees with stormwater. Tree trenches are usually built beside sidewalks, like the Grella tree trench, but can also be built in center medians or plazas. Stormwater tree trenches support climate change adaptation by creating cooler, shaded and natural walkways for pedestrians and improving air quality, biodiversity, and storing carbon.​