David wrote:
Can anyone suggest a "substantial" flowering perennial (or annual)
for the back of a border in a corner. I had verbena bonariensis
last
year, but it was too see-through and didn't have enough presence.
I
want something heavier and bulkier, with more oomph.

Others will have many suggestions, but it sounds like a case for
delphinums to me, if the aspect's right. Good tall ones, not the
paltry modern runts.

Or sweet peas: again, not the modern abortions, but proper scented
ones.

Mike.