On a bank adjacent to a secondary road last year I planted Crown Vetch for...
On a bank adjacent to a secondary road last year I planted Crown Vetch for ground cover which did not take. I think perhaps because of winter application of road salting and plowing / runoff. Can you advise on the best ground cover for a steep bank, poor soil ,salt resistant? Thank You, Jim
Washington County Pennsylvania
While it is true that crown vetch is not tolerant of salt, I doubt that this was the reason it did not get established when you planted it. While there may be some salt accumulating on that bank during the winter, it is probably not persisting through the period of active growth of the vetch. It washes through the soil pretty quickly with snow melt and spring rains.
http://plants.usda.gov/factsheet/pdf/fs_cova2.pdf is a fact sheet on crown vetch, discussing the attributes and the establishment of this ground cover.