warriorswisdomkathy wrote: Doesn't look like you have enough room between the blocks to plant anything. Ya, you may find an ocational weed but to plant it is a different story. Can you add any soil to the base of the wall, 4-6 inches would be great. Then you could plant some perenn vines or annuals, the annuals could fill in faster tho.
Pix: Clematis Prince Charles and Gypsophila paniculata (babies breath).
I can suggest vines if your interested.