The Olallieberry is a cross between the Loganberry and the Youngberry. The Loganberry is a cross between the Blackberry and Raspberry, and the Youngberry is a cross between the Blackberry and Dewberry. Rubus hybrids are generally identified as Rubus hybr.*, since they lack an acceptable binomial name. Olallieberry is sometimes called Olallie Berry, and also Olallie Blackberry.
It may be possible to find any olallieberry farms near your location. We have built a map that will show all of the berry farms in our directory!