Creeping to Safety

This Creeping Raspberry likes the brick walkway but not the soil.

I planted Creeping Raspberry (Rubus calycinoides) next to our front door a few years ago, ignoring that the soil is extremely moist there. Rubus likes well-drained soil, evidently. An interesting thing happened: It crept to safety, our brick walkway to be specific. This gives me an idea! If I were to situate some "scrap" broken concrete blocks that in the patch to the left, will the Rubus fill in there?