Alocasia corms are underground storage structures holding essential nutrients. Proper storage ensures their long-term survival and healthy growth.
Why Store Alocasia Corms
Storing Alocasia corms aligns with their natural life cycle. These tropical plants, native to Southeast Asia, enter dormancy in unfavorable conditions, conserving energy during colder months or reduced light and humidity. In colder climates, gardeners store corms to protect them from freezing temperatures, as Alocasia cannot withstand frost outdoors. Storage also allows for propagating new plants, multiplying collections.
Preparing Corms for Storage
Successful Alocasia corm storage requires thorough preparation. Harvest corms when foliage yellows or after the first frost. Carefully dig around the plant’s base to avoid damage, then gently shake off excess soil.
Remove all remaining foliage, cutting it back to 4-6 inches from the corm to prevent rot and mold. Clean corms by gently removing lingering soil or debris with a soft brush or cloth. Air dry them completely for several days to a week in a warm, well-ventilated area. This drying forms a protective callous on the corm’s surface, essential for preventing fungal infections and rot during dormancy.
Storing Alocasia Corms
Correct storage environment and medium are key for Alocasia corm preservation. The ideal temperature ranges from 40-50°F (4-10°C), ensuring they remain cool but do not freeze. Maintain a stable temperature throughout storage. Store corms in a dark location to prevent premature sprouting, as light depletes their energy.
Moderate humidity (50-70%) prevents corms from drying out or becoming too damp, which could lead to rot. Good air circulation prevents moisture buildup and inhibits fungal growth. Avoid airtight containers or plastic bags, as these trap moisture.
Suitable storage mediums include dry peat moss, vermiculite, perlite, or sand, providing insulation and regulating moisture. Newspaper or cardboard boxes with air vents can also be used. Arrange corms within the medium so they are not touching and are completely covered. Periodically check stored corms monthly for rot or desiccation.
Post-Storage Care and Replanting
When removing Alocasia corms from storage (typically early spring), assess their condition. Healthy corms feel solid; discard soft or mushy ones indicating rot. Slight shriveling is normal during dormancy.
Dry corms can be rehydrated with a brief room-temperature water soak, which also softens outer shells for easier peeling and faster germination. Replant corms pointy side up in well-draining potting mix, providing warm, bright, indirect light for new growth.
Troubleshooting Storage Problems
Despite careful preparation, issues can arise during Alocasia corm storage. Shriveled or excessively dry corms indicate insufficient humidity or a too-dry storage medium. Increase moisture slightly in the medium or place a container of water nearby, avoiding over-saturation.
Rotting corms (mushy spots, foul odor) result from excessive moisture, poor air circulation, or inadequate drying. Discard any corms showing significant rot to prevent spread.
Mold growth on corms occurs due to high humidity or insufficient ventilation. While some white fuzzy mold might be harmless, excessive mold suggests overly damp conditions. Improve air circulation and ensure the storage medium is not overly moist to mitigate this issue.