Philodendron Burle Marxii Lava Blue Mint Variegated Mandrake Root (Mandragora officinarum) The Legendary Root Few herbs carry the weight of folklore and mystery quite like mandrake. With its thick, twisting root often resembling the shape of the Sweet Marjoram (Origanum majorana) Plant Erythroxylum Field Museum How to Propagate Philodendron Billietiae Variegated 1 Cut below the root node (choose a stem with 23 leaves). 2 Place in water or moist moss. 3 Keep in bright, indirect light.