To store Fragrant Red Glory begonia bulbs for the winter, follow these steps (for northern regions).
• First, dig up the bulbs after the foliage has yellowed and withered, usually after the first frost.
• Gently remove any excess soil and cut back the remaining foliage to about 1 inch.
• Allow the bulbs to air dry for 1-2 weeks in a well-ventilated area away from direct sunlight.
• Store the bulbs in a paper bag or a breathable container filled with peat moss, vermiculite, or perlite.
• Keep the storage area cool, dry, and dark with a consistent temperature between 40-50°F.
• Check the bulbs periodically for signs of rot or damage and discard any affected bulbs to prevent the spread of disease.
These steps don’t apply to you if you live in a warmer area, such as USDA hardiness zone 9 and up. Within these zones, they can be left outside year-round.