Creating colour and interest in a small urban garden by growing a range of flowers and other decorative plants brings with it many rewards. Carolyn Dunster shows you what to grow and how to use your own blooms, leaves and berries in a range of indoor displays and hand-tied bouquets. Locally-grown flowers in season is a significant and welcome trend in floristry, and just as eating a tasteless strawberry in December pricks our consciences, so too does...