Bitterbush is usually considered to be dioecious, (having separate male and female forms).  But not always!

At right is a photo of a bitterbush in the nursery.  If you look carefully, you will see both types of flowers mixed together, along with developing fruits.

 Use one, or a group, in well-drained locations, in partial or full sun. 

If left untrimmed, they may get up to 15 ' high by the middle of this century. 

By annual pruning, you can easily maintain them at 7 feet high, or so.

Plant a specimen in the ground or in a pot under your high oak canopy.

Bitterbush has fine ornamental features, making a nice alternative to braided ficus trees and that sort of thing. 

Below are bitterbushes in 3-gal.(24" high) and 10-gal. (5' high).