Beginner Gardening: Pine tree flowerbed overhaul, 1 by Eleven

Eleven wrote:
Thanks for the replies so far. I added another couple Ajuga "Metallica Crispa" to the bed this weekend as well as filled in a couple hostas. Now they're in a more regular semi-circle bordering the back side of the bed. I'm going to plant the two Rhododendron Impeditum this weekend, probably at the two corners along the sidewalk. Do you think I should get a third to place between them?

I really do like the idea of adding some kind of small but sturdy anchor plant (these only get a foot high) for interest and structure. I guess there's time for things to grow, but right now the bed still looks pretty bare: