Identifying and Managing Dead Cymbidium Orchid Bulbs

Cymbidium orchids are a popular choice among plant enthusiasts, but dealing with dead bulbs can be a significant challenge. This article will provide you with the key information you need to identify, prevent, and manage dead Cymbidium orchid bulbs.

Signs of a Dead Cymbidium Orchid Bulb

1. Yellowed and Browned Leaf Tips: Yellowing and browning of leaf tips can indicate a problem with the potting medium, which can lead to the death of the bulb.
2. Leafless, Dormant-Looking Bulbs: Back-bulbs that have lost all their leaves are often considered dead, but they can still be used for propagation.
3. Shriveled and Dry Appearance: As the bulb dies, it will eventually shrivel to almost nothing compared to its original size.

Preventing Cymbidium Orchid Bulbs from Dying

1. Proper Watering: Ensure the potting medium is kept moist but not waterlogged, as this can cause root rot.
2. Good Drainage: Avoid using decorative foil or anything that prevents drainage, as orchids don’t like their roots to sit in water.
3. Repotting: Repot your Cymbidium orchid every 2-3 years to prevent the medium from becoming compacted and to remove dead roots.
4. Fertilization: Fertilize your orchid regularly, but avoid over-fertilizing, which can cause damage.

Dealing with Dead Cymbidium Orchid Bulbs

1. Remove Dead Roots: When repotting, carefully remove any dead roots to prevent the spread of rot and to promote healthy growth.
2. Use Dead Bulbs for Propagation: Dead bulbs can be used to propagate new plants by severing the rhizome and potting them in a suitable medium.
3. Monitor for Rot: Regularly inspect your orchid for signs of rot and remove any affected parts to prevent the spread of disease.

Contaminants and Chemicals to Avoid

1. Scale and Other Insect Pests: Remove old leaf husks to prevent the harbouring of pests.
2. Fungicides: Use fungicides or sealing pastes to prevent infection when cutting or removing dead bulbs.
3. Water Softeners: Avoid using softened water, as it can be detrimental to the plant’s health; instead, use rainwater or bottled spring water.

Additional Tips and Solutions

1. Repotting Technique: When repotting, place old pseudobulbs against the rim of the pot, and new growth towards the center.
2. Sunlight and Shading: Provide bright, indirect sunlight, and shade new bulbs and roots to prevent scorching.
3. Potting Mix: Use a well-draining potting mix specifically designed for orchids to prevent waterlogging.

By following these guidelines, you can effectively manage dead Cymbidium orchid bulbs and ensure the health and prosperity of your plants.

References:
– Repotting Cymbidiums
– Repotting Cymbidium Orchids
– Striking Back Bulbs: Advice for Novice Growers
– Pseudo Bulbs – Dried, Removed
– Cymbidium Orchid Repotting