The first customer I sent ‘Hummelo’ home with, left the garden center with serious skepticism written all over her face. The plant looked nice and was super healthy. But despite the clean, bright green foliage, it was somewhat lacking from a retail standpoint. Needless to say, she took it home and was calling me the following spring to order more. So what seemingly underwhelming plant became her favorite and also became the Perennial Plant Association’s 2019 Perennial Plant of the Year®?