Caragana Species, Russian Peashrub

I very much enjoy the Siberian peashrub, Caragana arborescens, but this one, the Russian species, Caragana frutex, is a disappointment. ...Read MoreIt's far too invasive by root to be part of a garden - much like the common lilac in its suckering habits. The foliage is attractive enough, but the Russian peashrub is much less generous with flowers than the Siberian form. Altogether, for our climate and sandy soils, C. arborescens is a better choice. It has shown no sign of running or suckering, and is perfectly polite in our garden.

Please note, however, that the plant I have as Caragana frutex does have small spines, whereas the description says "spineless." This makes me wonder if I have yet another Caragana here.