1. Soak seed for 24 hours and then stratify for 3 – 4 months at 1 – 8°c (e.g frigde). Keep them moist for all this time. It can be slow to germinate.
2. Sow onto moist seed sowing compost in trays or pots and just cover with 10mm (½in) of soil. The best soil is with addition of Perlite. Check very often is soil moist enough.
3. Place pots is warm place (electric propagator, greenhouse, place above the heater).When large enough to handle, prick the seedlings out into individual pots and grow them on until they are 20cm or more tall before planting them out in their permanent positions.