The trees can fruit when grown in the shade ... and chestnut-sided warblers are among the winged creatures who love red mulberries, but some people believe you should think twice before planting ...

Photography by Marie Viljoen. Above: Siberian elm samara in New York City. Like other fruit, nut, and winged seed trees (like maples), elms can have mast years, or a bumper crop, where branches ...