Posted: 29/07/2014 at 23:56
Im going to suggest an actea for the back. Slightly hesitant because I've suggested this plant a couple of times elsewhere recently. No apologies...it's a lovely plant
Acteas are perfect for heavy or dampish soils or for areas sheltered from direct sun. Beautiful purple brown shaped foliage and growing to 6' when in flower. The flowers are out now,,are scented and delicate but it's the foliage. A classy architectural perennial.
In front of that rudbekia Goldsturn.
To trail ....well at least to partly overhang with foliage, liriope. Liriope is evergreen, grass like and from end of August produces short spikes of purple flowers. Or a geranium like pink spice. This has lovely brown foliage, is compact, mound forming and produces pink flowers all summer. Another mound forming slightly trailing subject is a grass....hackonechloa or acorus Ogon or carex ever gold
Colour from flowers and foliage