Abstract: A method for stimulating growth in biological tissue or sprouts, an apparatus and a use thereof employs fluctuating magnetic fields. The apparatus includes a pulse generator and a plurality of coils in which pulsed currents will cause fluctuating magnetic fields in a predetermined region holding the material to be stimulated. The fluctuating magnetic fields will induce an electric field in the material. An enhanced effect has been detected in the regions where the electric fields are largest. The coils include a number of pairs of coils having, during a given pulse, magnetic fields in opposite directions in order to provide field gradients in the cells, micro organisms or tissue. Selecting a suitable number, size and positioning of coils will provide a homogeneous electric field in the predetermined region, which does not have any undesirable peaked maxima.