In colder climates (USDA hardiness zone 8 and below) it is a must to dig up Double Camelia Red Begonia for the winter. To store Double Camelia Red Begonia bulbs for winter, carefully dig them up after the first frost, taking care not to damage the roots. Gently brush off any excess soil, and allow the bulbs to dry for a few days in a cool, well-ventilated area.
Once dry, remove any remaining foliage and place the bulbs in a container filled with peat moss, vermiculite, or perlite, ensuring they are not touching each other. Store the container in a cool, dark location with a temperature between 40-50°F (4-10°C). Check on the bulbs periodically to ensure they remain firm and healthy, discarding any that show signs of rot or mold.