Serviceberry 'Obelisk' Narrowly upright form of this North American native is a good fit for tight spaces and a good candidate for small street tree and hedging. A profuse crop of small white flowers may be followed by small, edible, tasty fruits. The plant produces beautiful white flowers in early spring and attractive berries in the summer, which are loved by wildlife. It thrives in well-drained soils and full sun to partial shade.