Serviceberry Tree Serviceberry is rare in that it offers interest in every season. It kicks off in spring with beautiful white flowers, which develop into tasty purple berries that attract birds in early summer. Or harvest the berries and use them to make delicious jams, jellies, and pies. The plants bright green or bluish green leaves turn stunning shades of red and orange in fall, and its silvery bark offers winter appeal. You can grow serviceberry as a large shrub or small tree.