by Sarah Lord, Baltimore City Forestry Board
Spring is the season to rededicate ourselves to one of Bolton Hill’s best features: our trees.
Our city is underpopulated by trees. Although the City is working hard to reverse these numbers, only 27% of our city is under the tree canopy, well below the desirable goal of 40%.
Our neighborhood is better off than most, but let’s not rest on our laurels (no pun intended).
If you’re a do-it-yourself type, you can adopt a tree pit to help our neighborhood trees thrive.
Studies have shown that tree pits should be 4′ x 8’ or larger, allowing trees to grow to maturity and cool not just pavement, but rooftops where possible. Many of our older tree pits are much smaller, resulting in cramped, less healthy trees. If your tree pit is too small, hire a contractor to make yours longer and wider if necessary.
The ideal tree pit has no fencing around it, not even bricks, so that rainwater runoff can flow into the tree wells rather than bypassing them. The soil or mulch in these pits should be just below the pavement grade. When properly graded, you can watch with delight when rainwater flows into the pits to be soaked up by tree roots, nourishing the tree while diminishing storm water runoff into the Chesapeake Bay.
Or, plant a new shade tree, being sure to leave the trunk flare at its base above the soil line. It’s not a flagpole, so don’t plant it too deep and kill it. Never heap soil or mulch against the tree trunk, and remember to keep the soil level a tad lower than the surrounding sidewalk.
Most of all, help our street trees by watering all the tree pits your hose can reach once the hot dry days of summer are upon us. Do it about once a week, if we have not had a good rain. If conditions have been dry, watering in the fall can be critical to a tree’s survival over winter.