[Cob] cob wall planter

[yewberry at wavecable.com]

sly at riseup.net wrote:

>I have been asked to build a wall 
>that has a planter at the top out of 
>cob.  Is this possible?  I was 
>thinking if I put pond liner inside 
>before filling it with dirt maybe it 
>could work but I was worried that watering
>the plants might destabilize the wall.  

I would be easy enough to make the planters completely 
waterproof (personally, I'd just sink waterproof plastic, 
ceramic, or glass containers directly into the cob), but 
most plants also need to drain and can't sit in water.  So 
you'll need to water sparingly and keep an eye out for 
symptoms of over-watering.

Brina