Posted: 26/02/2015 at 21:11
There are such things as root aphids. these are the same as the ones found on leaves etc, but they live in the soil and feed off the roots. Usually when you remove a plant from its pot the soil appears to be covered in fine white filaments. These aphids cover themselves in a wax like material which makes them waterproof (useful if you live in the soil). Sadly the only way to remove them is with a systemic insecticide.