But whether you have a yard or not, now is the time to look for the berries. They're smaller than a typical cultivated blueberry, but they have the same sepals on the bottom. As they ripen, they turn from magenta to a dark purple. Serviceberries were widely used as a food by Native Americans, and George Washington planted several at Mount Vernon. But they don't ship well, so they've never taken off as a commercial fruit.

There are several species within the genus; native to this area are canadensis, laevis, and arborea. But, William Cullina writes, "They freely interbreed where ranges overlap, creating a vast and notorious hybrid swarm that has driven sober botanists to drink. You really never know for sure what you are going to get." We're usually just happy to know we're looking at an Amelanchier.
In the wild: Serviceberries are scattered through the woods here; they're an understory tree that's rarely more than 2o feet tall, but can reach 40 feet. It may be easier to find some of the ornamental plantings we're aware of: to start with, a few at the corner of Carroll and Laurel in Takoma Park; several large trees at the Lowell School on the edge of Rock Creek Park; and several in the 1600 block of Corcoran St. NW in DC. The densest population of serviceberries we have ever seen is in the Dolly Sods area of Monongahela National Forest, but they won't be ripe there until July or August.
In your yard: Yes, please. Local nurseries carry them in stock. Different species and cultivars have different characteristics (e.g., single stem vs. multi-stem), so be sure you know what you're getting if you have a preference. In general, serviceberries will flower and set fruit better with some sun, but they can also take shade.
Where else have you found serviceberries? Leave a comment if you're willing to give away your spot!