How to propagate Cotoneaster by seed

Susan is demonstrating for Kathryn sowing seed of Cotoneaster horizontalis in autumn, these can take up to 18 months to germinate so just leave them in the cold frame for as long as it takes. Pot on when large enough to handle and grow on till big enough to plant in final position in the garden. Seeds of Sorbus aucuparia can also be sown in this way. Look out for Kathryn's amazing red boots and boot liners.