Cold Stored Garlic: The Complete Buyer's Guide for Importers

If you import garlic from China, most containers you receive between October and May are cold stored garlic, sometimes called cold treated garlic. Understanding exactly what happens inside the cold store, and how it changes the product you buy, is the difference between a container that arrives in premium condition and one that arrives with condensation damage, hidden sprouting, or mold. This guide explains the full picture: the biology, the economics, the quality control points, and the practical decisions importers face.

What Is Cold Stored Garlic?

Garlic is a living bulb. After harvest it enters a natural dormancy period of roughly 60-90 days, during which the embryo inside each clove stays asleep even at room temperature. Once that dormancy ends, usually by early autumn, warm temperatures signal the bulb to wake up and sprout. Sprouting consumes the dry matter stored in the clove, softens the texture, shortens shelf life, and slashes commercial value.

Cold storage interrupts this process. By holding garlic at -2 to -3 degrees Celsius, just above the freezing point of the bulb tissue, cold store operators achieve two things at once: the low temperature keeps the embryo dormant or dormant-adjacent, and the consistently low temperature prevents the warm-cycle trigger that initiates sprouting. In industry terms, the garlic is "cold treated." Properly treated bulbs can hold export quality for 8-10 months, which is exactly what makes year-round garlic supply from China possible.

In Shandong, China's leading garlic export province, the sequence works like this: garlic is planted in October, harvested in June, field-cured and dried for 2-3 weeks, then moved into cold stores from July through September. Once inside, it can be drawn down and shipped at any time, with the heaviest export months running from October through May. For more background on the crop cycle, see our China Garlic Harvest Season guide.

Fresh Garlic vs Cold Stored Garlic: The Real Differences

Buyers often ask whether freshly harvested garlic is "better" than cold stored garlic. The honest answer: they are different products suited to different situations. Here is how they compare on the metrics that matter to importers:

For most importers, the practical takeaway is simple: fresh garlic is only a realistic option for shipments booked in July and August with short transit times. Everything else, especially 25-40 day ocean routes to the Middle East, Africa, South America, and Europe, is effectively a cold stored garlic trade. The drier, firmer texture of stored bulbs tolerates container transit far better. If you are deciding between Normal White Garlic and Pure White Garlic for stored-crop shipments, both perform well at -2 to -3 degrees Celsius; pure white simply commands a premium for its brighter skin.

China's Cold Stored Garlic Supply Season

China supplies roughly 80% of globally traded garlic, and Shandong is its core export province. The cold stored supply season follows a predictable annual rhythm:

• June: Main harvest. Bulbs are lifted, field-cured, and moved to drying facilities. Cold store operators begin negotiating purchase prices with growers and traders.
• July-August: Garlic enters cold stores across Shandong. Storage volumes and entry prices set the tone for the entire season. Export of "new crop" garlic runs in parallel.
• September-October: Storage entry completes. This is the moment total season inventory becomes visible, and the market re-prices accordingly.
• October-February: Peak cold stored export window. Steady drawdown, stable quality, holiday demand (Christmas, Ramadan prep, Chinese New Year factory closures).
• March-May: Late storage season. Inventories thin, prices typically reach their seasonal peak, sprouting pressure builds on poorly stored stock, and buyers begin counting down to the June harvest.

The key insight for importers: garlic is financially a "stored commodity" from October onward. Every month it sits in the cold store adds storage cost (electricity, handling, capital) to the seller's basis, and that cost is passed into your FOB price. This is why the same 5.0cm Normal White garlic can be 10-20% more expensive in April than it was in October. For a fuller picture of how this plays out in pricing, read China Garlic Price Trends and our live price list.

Inside the Cold Store: Conditions That Make or Break Quality

Not all cold stored garlic is stored equally. When you evaluate a cold stored garlic supplier, these are the three parameters that decide whether your bulbs will still be tight and dormant months later:

• Temperature: -2 to -3 degrees Celsius. This narrow band sits just above the freezing point of garlic tissue. Warmer than -1 degrees Celsius and sprouting slowly resumes; colder than -4 degrees Celsius risks freeze damage that shows up as translucent, water-soaked cloves. Ask your supplier for their cold store temperature logs, not just a verbal assurance.
• Humidity: 65-70% relative humidity. Too dry and bulbs lose weight and skin integrity; too humid and root growth and mold become risks. Well-managed stores monitor and adjust continuously.
• Ventilation and air circulation. Garlic releases respiration heat and CO2. Stagnant air creates warm pockets and ethylene build-up that accelerates deterioration. Modern Shandong cold stores use forced-air circulation to keep every pallet within a fraction of a degree of the set point.

Also ask whether the store is mixed-use or dedicated. Garlic is pungent and absorbs odors; shared storage with onions or strong-smelling chemicals can taint the bulb. The best export-oriented cold stores in Shandong dedicate chambers to garlic only. For more detail on the receiving end, see our Fresh Garlic Storage Guide.

When to Buy Cold Stored Garlic: Timing the Market

Because cold stored garlic is a depreciating inventory asset for the seller, price generally follows the storage clock. The seasonal pattern that repeats in most years:

• October-December (best value window). Storage is full, sellers compete to move volume, and the embedded storage cost is still small. Quality is also at its most uniform: the crop is sorted, sized, and stabilized. For importers planning Q1 sales programs, this is the window to contract and ship.
• January-February (Chinese New Year disruption). Factories and loading operations slow for 2-3 weeks around the holiday. Book early or expect delays; prices drift upward.
• March-May (late season). Remaining inventory is the most expensive of the year. Quality sorting becomes more important: stock stored in substandard rooms begins to show sprouting and softening, and it gets mixed into the market by less scrupulous sellers. Buy only from suppliers who can verify storage conditions.
• June-September (transition). New crop arrives; prices reset downward. Fresh-crop shipments require curing awareness and faster turnover.

One caution: these are patterns, not guarantees. In years with reduced planted area, weather damage, or heavy speculative storage buying, the curve can steepen or invert. Garlic is famously one of the most volatile agricultural commodities in China. Before committing to any volume, get a current quote, our Get Price page updates FOB Qingdao levels for all sizes and grades.

How to Inspect Cold Stored Garlic Before You Ship

Whether you inspect in person, hire a third-party inspection agency (SGS, BV, and similar firms operate throughout Shandong), or rely on supplier documentation, check these points on cold stored stock:

1. Sprouting rate. Cut a sample of 50-100 bulbs crosswise and check the germ (sprout) inside each clove. Dormant garlic shows a small, pale, flat germ. Advanced germs are elongated, green-tinged, or visibly pushing toward the clove tip. Most export contracts cap visible sprouting at 1-2%; late-season stock should be checked especially carefully.
2. Moisture. Cold stored garlic should feel dry to the touch with tight, rustling skin. Excess moisture at loading is a leading cause of mold in transit. Target moisture content for export bulbs is roughly below 65-70% depending on grade, with no free moisture between skins.
3. Mold and disease. Inspect the basal plate (root end) for black mold (Aspergillus niger) and Penicillium blue-green growth, and check necks for softness that signals neck rot. Reject lots showing more than trace levels.
4. Freeze damage. If the store ran too cold, cloves appear water-soaked or translucent and soften after thawing. This damage is permanent and disqualifies the lot.
5. Size and uniformity. Verify the calibre matches contract: 4.5cm, 5.0cm, 5.5cm, 6.0cm, or 6.5cm and up, measured as minimum diameter. Run a ring gauge on a random sample, not just the showcase bulbs. See our garlic size standard reference for how Chinese sizing works.

Tempering: The Step That Saves Containers

Tempering is the most misunderstood step in the cold stored garlic export process, and skipping it is a classic beginner's mistake. When garlic comes out of a -2 to -3 degrees Celsius cold store into a warm loading environment (in Shandong, autumn days can still reach 20-30 degrees Celsius), the cold bulb surfaces are below the dew point of the surrounding air. Water condenses on the skins, and that moisture trapped inside mesh bags or cartons invites mold during a 25-40 day voyage.

Correct practice is to temper the garlic for 24-72 hours before or during packing, allowing the pulp temperature to rise gradually and, where possible, loading in the cooler hours of the day. The reefer container is then set to -2 to -3 degrees Celsius for the voyage, matching the cold store regime, so the garlic never experiences a disruptive temperature cycle. Experienced exporters in Shandong treat tempering as standard procedure; if your supplier has never heard of it, that is a red flag.

For more on the container side, including how a 40HQ reefer is loaded with 28 metric tons, read our Garlic Container Loading Guide and 40HQ container capacity guide.

Choosing a Cold Stored Garlic Supplier

Because cold stored garlic quality depends so heavily on storage execution, the supplier relationship matters more in this trade than in many others. Questions worth asking before your first order:

• Do you operate or contract dedicated cold storage, and can you share temperature records for the chamber holding my garlic?
• What is your standard sprouting and mold tolerance in the contract, and do you accept third-party inspection before loading?
• What is your tempering and loading procedure, and at what container set-point temperature do you ship?
• Can you supply the same size and grade consistently across repeat orders during the season?

ExCrop ships cold stored garlic from Shandong at a maintained -2 to -3 degrees Celsius chain from cold store to reefer, loading at Qingdao, with a minimum order of one 40HQ reefer (28 metric tons). Every shipment can be inspected by third-party agencies on request. For a broader evaluation framework, see How to Choose a Garlic Supplier in China.

Frequently Asked Questions