Posted: 09/10/2017 at 18:50
Ajuga reptans is nice - the dark leaved one ( name escapes me at the mo ) - blue flower spikes in Spring and the foliage sets off Prims and the mini daffs as mentioned above.
If you want Heucheras - go for the yellow leaved ones ( Marmalade is very attractive ) with Ophiopogon ( Black Grass )for a good contrast.
If you use Heucheras in pots/containers, they seem to be more susceptible to Vine Weevil than when planted in the ground.
Sempervivum also make good container plants - lots of choice in form, size and colour.