hello, i have acquired two small plants which were substituted by a garden centre because the plants i ordered were not availabe. the description is the White Valerian which is good for wildlife but unfortunately, from what i can gather, these plants are going to grow to an astronomical size and i'm not sure where to site them.
if they are going to grow really big, they're going to have to put up with an extremely exposed site that gets buffeted by the wind as we live behind school playing fields and have no trees to shelter us from the weather.
can someone tell me if i am correct and what will the eventual size be of these plants ???