Quote Originally Posted by altoids
When plants grow, I assume a lot of their energy goes to making roots. What would happen if after harvesting a plant, and leaving the roots in the soil, you grafted a clone on top of the already formed roots? Would it work?

Would there be accelerated growth? Or would it be forever crippled?
Not too sure you can successfully graft an annual like cannabis, (too soft a wood) but I guess it could be possible with enpough experience and time. But why? You would spend more time babying the plant back to health, than it would take to grow from seed, and the stress may cause hermaphrodism.

...But there's always re-vegging or bonsai techniques, which I use often and are quite simple to do properly. (instructions are in my signature)