Is there enough volume in your planters? Or is it that the brick drinks up all the water?
If it is wicking, you could line it with plastic (or varnish the inside), and try some of the gel water absorber you can get from Stokes or other vendors. If you don't have the volume and it will dry out anyway, you need to try something that loves to be dry. Portulaca is a nice hanging plant - but it is not as trailing as the potato vines. You might try a small watering drip tube that leads to a hidden water source. Hope this helps. |
Here is a link that might be useful: Pics
