This answer talks about pruning the roots of a plant when it has
become rootbound. How easy is it and how do you go about it?
Root pruning is typically done when the roots of the plant are
all entangled and have begun growing around in circles. Pruning
is necessary for the continued growth and health of the plant.
Pruning approaches can vary wildly, depending on how badly the
plant is root bound, but the essential goal in each case is the
same: free the roots! I'll describe two ways of doing it,
depending on the severity of root boundedness. 1. Mild –
moderately root bound Here (see examples below), the plant is
just starting to get root bound and the roots outside are mostly
whitish (new roots) or thin. This is perhaps the best stage to
diagnose root boundedness and do the pruning, as most of the
roots can be retained without very heavy pruning. You can start
by gently trying to separate out the roots. Try to squeeze and
separate or use a tool to shake the soil off. You can also use
your fingers to tickle th