Genetically, it is approximately two-thirds Blackberry and one-third European Red Raspberry. The Olallieberry was developed in 1949 by the U.S. Department of Agriculture at Oregon State University by crossing a Loganberry with a Youngberry. While primarily developed in Oregon, it has never been very productive there and is primarily grown in California. Because the olallieberry has blackberry on both sides of its parentage, it exhibits many of the same flavor characteristics of the blackberry. However, olallieberries are much larger in size and generally are sweeter than blackberries grown under the same conditions.
***For our friends at the Phelan Farmers Market, Olallieberries are hardy in Agricultural Zones 7 – 9. Phelan is Zone 8b, so plant on!!!
Site – Olallieberry bushes love full sun but will tolerate partial shade. Berry production will be diminished.
Soil – Select a site with good drainage. Waterlogged roots will cut off oxygen to the plant and cause it to die. Fertile loamy soil is best. Dig hole twice size of the root ball and amend with good quality organic compost. About one shovelful/planting hole. Cover roots and water in well. Cut single cane back to 6 inches.
Spacing – 4 feet between plants.
Watering – one inch/week or twice/week for 30 minutes on irrigation.
Fertilizing – Fertilize with organic fertilizer and compost early spring when flowers appear. Then in fall after cutting canes that have born fruit (florocanes).
Gopher Patrol : If you are plagued by these guys, make a 1 foot tall cylinder out of 1/4 inch wire mesh and plant new Olallieberry cane with 6-8 in. under ground.