Not long ago I planted a hardy geranium under a tree. It has occurred to me since (doesn't it always ) that a blue would probably not "light up" that dark corner. In hindsight I would have preferred the pink one but hey, its' too late now. While I've been driving around I have noticed a lot of gardens have tiny white flowers underneath shrubs and falling over low walls. I would like somethng like that at the edge of the slabs. Something white or pink that will flower throughout the summer. Once the geranium has filled out, I would still like this other plant to spill out underneath and create some light. It doesn't have to be evergreen as the snowdrops and aconites will take over in the winter. Any thought would be appreciated. G. Ps I apologise for the blurred photo. It was raining so it was taken very quickly.