TURNING OVER A POT of cuttings to uncover small white roots brings a moment of joy like no other. It brings a happiness required in the cold depths of winter when many of us are secluded in our glasshouses. While this feeling is often sought out, some species are not so eager to please us. As we tip the pot we find rot, callusing but no rooting, or sometimes remnants of a cutting once there. This often requires new methods, taking cuttings at new times, or sometimes trying a new species.