Autumn Mandrake plant, Mandragora autumnalis, is a sub-species of Mandragora officinalis but in temperate climates produces its leaves. flowers and fruit in autumn. Identical medicinal and magical applications as M. officinalis but less demanding to grow. Note: Very toxic. Autumn Mandrake plantprefers rich, well-drained soil in a protected, part-shade to shaded position. Drought and frost tender. A perennial plant growing to 0.3m x 0.6m. Purple flowers in autumn.