Least Favorite Plant: Tree of Heaven
...new metric: the economic health of a city can be judged by the size of its trees of heaven (aka Ailanthus altissima). The higher the Ailanthus altissima, the more likely a city is to economically distressed. Tree of heaven is a super weed much reviled by gardeners and landscapers for its unstoppable ability to grow in nearly every climate in the most inhospitable conditions. In a move that will raise a lot of horticultural hackles, the Detroit Tre...
