'Twist of Lime' is same family as 'Lemon Frost'. I have them growing side by side and it's hard to tell where one ends and the other starts.
'Cracker Crumbs' would probably work well.
http://garden.org/pics/2014-06...
I've never tried dividing it, but I bet 'Dragon Tails' would work well.
http://garden.org/pics/2014-06...
My 'Green Eyes' isn't even close to large enough yet, but I bet it would work well.
http://garden.org/pics/2014-06...
I have 'Kifukurin Ko Mame' as a border in 4 places. In the dryer spots it's not as large as here.
http://garden.org/pics/2014-06...
'Kinbotan' is well on its way to becoming a ground cover here.
http://garden.org/pics/2014-06...
This is the 'Lemon Frost' and at the far left of the border, you can see a bit of 'Twist of Lime'
http://garden.org/pics/2014-06...
'Lakeside Zinger'
http://garden.org/pics/2014-06...
Probably 'Stiletto' would work.
http://garden.org/pics/2014-06...
'Tick Tock' might be a bit higher than ideal, but it forms an extremely dense mound.
http://garden.org/pics/2014-06...
'Tiny Tears' would work well
http://garden.org/pics/2014-06...
I don't have a pic, on this computer, of 'Limey Lisa'. Can add it later. I've tried 'Lakeside Elfin Fire' but it prefers to be grown in a mound. I also have 'X-rated', but I don't think it would work well as a border. I planted mine in three groups when I divided it 3 years ago and it still hasn't really filled out as much as I'd like.
