"Vox Humana" wrote in message
...

Strange that you mentioned prunella. I planted prunella grandiflora
'Loveliness' a few years ago with high hopes, but it languished and then
died. I think it was in an area that is too dry. It is a trouble area
for
me at the edge of a woodland with clay soil and on a slope. I haven't had
much luck with plants in that location. At best, things just survive. I
have planted hydrangea macrophilia, hydrangea p. tardiva, viburnum
carlcephalum, viburnum t. Shasta, common daylilies, tradescantia, hostas,
spirea, to name a few with no real success. The Shasta viburnum really
wilts in the summer and watering is very difficult in the area.

Most hydrangeas like regular watering as do viburnums. viburnums like to be
well mulched and require less water with a heavy layer although they still
wilt during dry spells. Even the common daylilies (ditch lilies) did poorly
this summer during a late May early June dry spell. The only thing that seem
to thrive were the common irises that we grow around old homesteads and in
the ditches. Even their blossoms faded and died rapidly this spring when we
had an early hot spell. The one plant that did well during the hot, dry
weather was Mexican Hat Ratibida columnaris, which seemed to enjoy the
weather.

John