Daglilja : en studie av växtslaget, handelskedjan och sortimentet

Abstract: This thesis describes the genus Hemerocallis, the trading with daylily from hybridizer to seller with emphasis on the Swedish market. The first part describes the daylilies biology its botany, breeding, production, pests and diseases. Also the tobacco ringspot nepovirus recently confirmed in Sweden is described. Since the breeding of daylily is mainly done in Florida topics like hardiness and influence of the climate are included. The first part is mainly based on literature studies, but also interviews with growers and breeders from Sweden, USA, Holland and Germany. The second part describes Swedish horticultural companies, their assortment, its content and volume. Factors affecting the assortment such as demand, marketing and type of customers etc are also taken into account. This part also describes how the companies in Sweden are growing daylilies. The result is mainly based on interviews with horticultural companies in Sweden which grow or sell daylilies.