Cl Columbia has been in commerce, just not in recent years. This thing is 89 years old. How large it gets depends upon how sharp your pruning shears are. I grew it own root as a free standing bush in the old Newhall garden where it remained under seven feet. Even own root, if it has support and time, it can get quite large, but a budded plant will get there faster. These photos were taken at Rosemary's Roses in Columbia, CA May, 2017. Notice in the trees in the back ground, you will see a climbing rose with large, pink flowers. They ARE Cl. Columbia from an own root plant. It has grown there for YEARS.
