Why are some window boxes so beautiful while others are so blah? It's all about design, according to Sonia Uyterhoeven, the gardener for public education at the New York Botanical Garden in the Bronx.

Last week I jetted to England to attend Masterpiece London, the chic fine-and-decorative-arts fair now marking its sixth anniversary. But when I wasn’t wandering the hundred-plus dealer booths in ...