Harvest Prep: The overlooked step that prevents mid-autumn rot

The longevity of onion and garlic harvests depends on the quality of drying before storage. Rushing to cut foliage often interrupts biological ripening—the process where nutrients migrate from the leaves into the bulb. Skipping these preparatory steps typically results in crop rot by mid-autumn.

Drying Requirements: Sun vs. Shade

Onions and garlic require opposite lighting conditions during the drying phase to prevent spoilage.

Garlic is highly sensitive to direct sunlight, which can effectively "cook" the cloves under the husk. It must be hung or spread in the shade with consistent cross-ventilation. The process is complete only when the root neck is fully dried, a stage that typically takes about one month.

Onions benefit from direct sun exposure. Ultraviolet light acts as a natural antiseptic, eliminating pathogens on the surface of the scales. Properly dried onions are identified by a characteristic rustle and a glossy sheen to the husk. During humid weather, bulbs should be moved under a canopy during the day and brought indoors at night.

Sorting and Pruning

Premature pruning exposes vegetables to infections. For garlic, the foliage should only be shortened once it becomes brittle and dry. A stem of 1.18–1.57 inches (3–4 cm) must be left above the bulb to avoid damaging the cloves.

Onions require a different approach: only the roots are removed, as the dry foliage is often used for braiding, which improves ventilation during storage. In both cases, soil must be removed by hand without using sharp tools that could wound the vegetable.

After pruning, vegetables should be left in a cool, dark place for one additional week to allow cuts to seal completely. Any specimens with soft bottoms or spots should be separated and used first.

Climate Control and Storage Locations

The ideal environment is a cool cellar with temperatures between 32°F and 39°F (0°C to +4°C). Onions and garlic should not be stored alongside potatoes or beets, as these root crops release significant moisture that can trigger bud awakening and rot in garlic. Optimal placement is on upper shelves where air is drier or near squash.

In apartments, vegetables can be stored at room temperature in a dry, dark area away from radiators. Plastic bags must be avoided to prevent premature rotting caused by lack of oxygen. To protect garlic from drying out in warm indoor air, the stems can be dipped in melted paraffin to create a moisture-locking seal.

Questions about Harvest Storage

Can onion and garlic be stored in the refrigerator?

This is not recommended. High humidity and poor air circulation in refrigerators often lead to mold growth and premature clove sprouting.

What should be done if the cellar is too damp?

Humidity can be reduced by placing open containers of charcoal or quicklime in the corners. Additionally, a layer of dry sawdust on the floor can absorb excess moisture.

Is it necessary to remove the outer husk before storage?

Dirty layers of husk may be gently removed, but bulbs should not be fully peeled. The scales protect against mechanical damage and dehydration.

Why does garlic turn yellow and dry from the inside?

This typically occurs when high storage temperatures are combined with low humidity, causing moisture to evaporate from the tissues and cloves to lose turgor.

Source: This article was adapted from an original Russian-language publication by Pravda.Ru.