National Arboretum, NE.  © 2010 Matt Dunn

The Issue: In early September, patrons of H Street NE began to notice H-shaped planters in the empty tree boxes along the sidewalk. There were 40 in all, each brightly painted and complete with an unappealing plant. So who is behind the mysterious “Project H”? That would be the non-profit DC Greenworks, which had the [...]