More circles

They seem to be appearing all around the garden, from the circular seating area and most recently the moss circles (from the post here.) Can't resist showing the photo again.

The front garden gives more opportunities to bring in circles.  There will be a circular raised bed for a start, and lots of mounding plants in the gravel.  Two that will definitely be added:

This arenaria aurea seems fairly keen to stay in a circle anyway and the white flowers will go well in the white garden.

Gypsophila aretioides may provide a different challenge, to keep it perfectly circular or to let it just grow how it wants.

No surprise here: scleranthus biflorus. The watering is working, now it is just the big winter test.  There is one in a pot and one in the ground, so hopefully that should give an idea of how it copes.  The one in the pot is growing in a perfect circle, the one in the ground is a bit all over the place.  So may need to select the plant carefully and look at how to keep it nice and circular.

This got me thinking about what other plants could be grown in circles, maybe by giving them something to grow in.  Looking through the greenhouse I spotted the copper slug rings.  They come in different sizes and could be half buried in the gravel or rested on top to give slight different heights.

Photo from slugrings.co.uk

Now for plants. Sempervivums form nice clumps and the smaller forms could be contained by the rings.  It just happened there was a good clump of sempervivum arachnoideum cobweb that needed a new home, so time for a test.

Will be interesting to see if it can be kept within the ring.  There needs to be more, whole groups.

I probably have enough small semps to fill a few of these, but it opens up a whole range of small plants. I am thinking of doing a run of them up the centre of the parking space. Need to get a few more and try joining them together to give large sizes, then the fun can start properly next spring.

So what other plants would work well in these?