Collection of 15 Begonia grandiflora

Plant your begonias in a shade or dappled sun, in light and moist soil rich in humus. Begonias dislike heavy soils, so lighten it if necessary with sand. Plant after the last frost: one per 20cm pot, or spaced 25 centimetres (10 inches) apart in open ground. Plant the bulb with the hollow side up, and cover with 5cm (2in) of soil. Like dahlias, you can speed up their growth cycle by planting them as early as February in a pot, keeping them sheltered, and taking them out in May. Water regularly. Apply begonia fertiliser at planting, then twice a month during the season. Remove faded flowers. Dig up the bulbs before the first frost, and store them in a bit of soil in a dry and cool place during winter.