Most bakers, and those who enjoy baked goods, are probably familiar with poppy seeds. Pictured here is a poppy seed pod, which is what’s left on the stem once the flower blooms and the petals fall off ...

Otto von Bismarck, the powerful diplomatic deal-maker of 19th century Europe, is famously quoted as saying that politics is “the art of the possible.” Horticulture, by contrast, could be defined as ...