Quote Originally Posted by Sabina
No they can be used with soil too.



That's what I asked too, but they said something like "that's the whole point".
The root tips close to the holes dry out and die. This causes the plant to create double the amount of roots and at a faster rate...

Double the roots huh?

Sounds right up my alley- BUT, I think I might get one for my cacti, one for my tulsi and one for my african violet- test em on them first…..

But they are interesting looking, cannot wait to hear more about them…..