Snowberry

Symphoricarpos albus
Snowberry is a shrub or small tree that grows up to six meters tall. The leaves are large, opposite, divided into five to seven leaflets, and toothed or irregularly lobed. The fruits are white, berry like drupes, and one to one and a half centimeters in diameter.

Sold as 1 gallon pot

Photo courtesy of: H. Zell, CC BY-SA 3.0, via Wikimedia Commons