Put the viable seeds in a container and pour boiling water over them and leave to soak in the water overnight.
Prepare a germination mixture of 2 parts potting soil and 1 part compost.
Plant the seeds in this mixture.
Cover the seeds with a thin layer of the germination mixture and put the tray in a warm, shady spot.
Water the seed tray once a week, keep the soil moist but not wet.