Here are some blooms from my troughs this spring. Though I threw in a few from the yard as well. All my plants are still small but made it through a couple years, so hopefully will gradually clump up. The plants are:
1. Helianthemum nummularium Henfield Brilliant.
2. Erodium petraeum
3. Saponaria unnamed hybrid from Wrightman Alpines
4. Aethionema saxatile
5. Saponaria lutea
6. Myosotis terglouensis - teeny tiny flowers
7. Minuartia verna. Foliage drapes off the sides of the trough with blooms all along.
8. Alyssum oxycarpum
9. Dianthus Dainty Dame
10. Silene alpestris Flore Pleno
11. Geranium sanguineum
12. Phlox subulata North Hills.
13. Potentilla neumanniana Nana
14. Phlox x Crackerjack.
15. Lewisia 'Constant Comment'
16. Dianthus Grace Bay
17. Rhodohypoxis Hebron Farm Red Eye - has to be overwintered in garage
18. Daphne x hendersonii Fritz Kummert. Still a tiny plant but I love the dark green tiny foliage and deep red buds opening to white flowers with red reverse
19. Marrubium rotundifolium - just for the fuzzy felted leaves. Flowers are forgettable.
20. Erysimum John Codrington
21. Valeriana montana
All of these have made it through several years of totally non-alpine conditions, so hopefully they'll continue to do well.