In the spring, there are many variations on the "opening day" theme, from the welcome signs on the golf courses and gardening centers to the "play ball" shouts at Fenway Park and "cast your lines" at the fishing streams and lakes. But one of my favorite openers is when the Bloodroot, an extra early and extra gorgeous wildflower, suddenly pushes through the leaf litter and, still jacketed by its own leaves against the chill, opens its brilliant white petals and rich yellow stamens for business. Sanguinaria canadensis, as the local plant is known to botanists—Sanguinaria is a reference to bloodroot's red sap—came into glory late this year, but, with the temperature finally becoming spring-warm, it shot up out of nowhere and began putting on an enticing display. Now, all this fine scene needs is an army of bumblebees, those hard-working pollinators that should, any day now, be answering the Bloodroot's siren song. In the wild section of my garden and along the wooded edges of the local roads where S. canadensis is still commonly found, I'm watching... and waiting.