Produce Season Is Here. Is Your Supply Chain Prepared?

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Every spring, the North American freight market shifts. Temperatures rise, crops start moving, and demand for refrigerated capacity tightens across the continent. For shippers of fresh produce — and for anyone whose supply chain depends on reefer equipment — produce season is one of the most operationally demanding periods of the year.

Understanding what happens to the market during this window, and how to prepare for it, can mean the difference between a smooth season and a costly one.

Understanding the Impact of Produce Season on Freight Operations

What Produce Season Actually Means for the Freight Market

Produce season isn’t a single event — it’s a rolling wave of regional harvests that moves north through the continent from late winter through fall. It typically begins in Florida and the Southeast in late March and April, advances through Georgia, Texas, and the Carolinas in May and June, shifts to California’s Central Valley and the Pacific Northwest through summer, and then transitions into fall harvests in the northern states and Canadian growing regions. In some regions, the start of the season is formally defined — for example, the Vidalia onion pack date in Georgia marks the first day growers can legally ship the new crop, ensuring only mature, high-quality onions reach the market and protecting the product’s signature sweetness.

As each region hits peak harvest, demand for refrigerated trucks surges locally. Carriers reposition their reefer fleets toward high-volume produce corridors to take advantage of stronger rates, which tightens capacity in the regions they leave behind. The ripple effect is felt across the entire truckload market — not just by produce shippers.

Historically, dry van and reefer spot rates both peak around the summer months, driven in large part by produce demand. When reefer trucks redirect to agricultural regions, shippers moving other goods — dairy, meat, packaged food, even pharmaceuticals — suddenly face a more competitive equipment market. The capacity crunch is rarely limited to the fields.

The Specific Challenges of Moving Fresh Produce

Fresh produce is among the most demanding freight categories in transportation. The margin for error is thin in a way that most dry freight simply is not.

Temperature sensitivity is unforgiving. Different commodities require different temperature ranges, and even a few degrees of variance can trigger spoilage, discoloration, or accelerated ripening. Leafy greens typically need to be held between 32°F and 36°F; tomatoes do better around 50°F to 55°F; stone fruits and citrus have their own precise requirements. A mixed load requires careful planning to ensure that the temperature profile of one product doesn’t compromise another. Unlike a delayed shipment of auto parts, a temperature deviation on a load of berries or lettuce may not be recoverable.

Pre-cooling matters more than most shippers realize. A reefer trailer cannot cool down a warm load — it is designed to maintain temperature, not generate it. Loading warm product into a trailer and expecting the unit to bring it down to spec often results in uneven cooling: the pallets nearest the air chutes cool first while the interior of the load lags behind. Produce that hasn’t been pre-cooled to pulp temperature before loading is already at risk before the truck leaves the dock.

Transit time is a perishable asset. Fresh produce operates on strict timelines from field to retail shelf. Delays at pickup, in transit, or at delivery directly reduce the shelf life available to the end customer. Scheduling precision and responsive communication from the carrier are not conveniences — they are operational necessities.

Compliance requirements are real and growing. The FDA’s Food Safety Modernization Act (FSMA) Sanitary Transportation Rule establishes specific requirements for the transport of perishable food, including temperature monitoring at staging, continuous monitoring during transit, and temperature documentation available to receivers upon request. Both shippers and carriers carry responsibilities under FSMA. Carriers must pre-cool equipment, maintain safe temperatures throughout the move, and be able to produce detailed temperature logs. For shippers, choosing a carrier that understands and complies with FSMA requirements is not just a quality consideration — it’s a legal one.

Why Capacity Gets Tight and What It Costs Shippers

The math of produce season is straightforward: thousands of shippers who were largely dormant through winter simultaneously re-enter the refrigerated freight market in spring. The supply of reefer trailers doesn’t grow to match them. The result is a competitive scramble for equipment that tends to push spot rates higher, extend lead times, and increase tender rejection rates on committed contracts.

Shippers who aren’t prepared often find themselves in one of a few difficult positions: paying spot market premiums well above their contract rates, experiencing service failures when their freight gets bumped for higher-paying produce loads, or waiting on equipment that’s stuck repositioning from a produce region they didn’t anticipate.

Rates at the peak of produce season can move meaningfully — historically, reefer spot rates have exceeded contract rates by a notable margin during peak periods, and seasonal rate surges are a well-documented feature of the May through August window. Non-produce shippers are not immune. Reefer trucks that typically haul dry goods in temperature-controlled equipment often redirect to produce loads when the premium is high enough, pulling that capacity out of other supply chains.

How Shippers Can Prepare

The shippers who navigate produce season most successfully tend to do the same few things consistently.

Lock in capacity before the market tightens. The single most effective thing a produce shipper — or any reefer shipper — can do is secure capacity commitments well in advance of the spring surge. Waiting until May to source reefer capacity means competing in a market that has already tightened. Contracts and committed carrier relationships established in Q1 provide a buffer against the spot market volatility that defines peak season.

Understand your regional exposure. Produce season affects different lanes differently, and at different times. A shipper in the Southeast faces a very different capacity environment in April than a shipper in the Pacific Northwest does in August. Mapping your freight lanes against the seasonal harvest calendar helps identify when and where your supply chain is most exposed — and where you need to lock in coverage ahead of time.

Have a contingency plan. Capacity can shift overnight during produce season. A carrier that was committed on a lane on Monday may face equipment shortages by Friday if a major regional harvest accelerates. Shippers with relationships across multiple carriers, or with a logistics partner who can access broader capacity, are far better positioned to respond when plans change.

Pre-cool your product — and verify your equipment. Before a load is tendered, confirm that the trailer has been pre-cooled to the required temperature and document it. Verify pulp temperatures where applicable. The best cold chain practices start at the loading dock, not in transit.

Communicate proactively with your carrier. During produce season, information matters. Keeping your carrier informed about load timing, any scheduling changes, and temperature requirements at the outset of each shipment reduces the risk of miscommunication and gives your carrier the best opportunity to protect your freight.

What to Look for in a Refrigerated Carrier During Produce Season

Not all reefer capacity is equal, and produce season is when the differences become most visible. When evaluating a carrier for temperature-controlled freight during peak season, the questions worth asking go beyond rate and availability.

Does the carrier maintain their equipment to a standard that produces reliable temperature performance? Equipment failures during produce season can result in rejected loads, spoilage claims, and a recovery process that falls entirely on the shipper. Carriers with rigorous reefer maintenance programs — regular inspections, access to repair networks, and wash protocols for food-grade compliance — provide a meaningful risk reduction.

Does the carrier have 24/7 visibility and monitoring capability? During peak produce season, a temperature alarm at 2 a.m. needs a response. Carriers equipped with satellite GPS on reefer units, remote temperature monitoring, and around-the-clock customer service teams can catch and address issues before they become losses.

Is the carrier FSMA-compliant? Drivers should be trained in USDA clearance procedures and food safety handling. The carrier should be able to produce temperature logs and documentation upon request. For cross-border moves, compliance requirements add another layer of complexity that carriers without cross-border experience often underestimate.

Does the carrier have the equipment flexibility to handle your specific commodity? Multi-temp trailers, single-zone reefers, and heated trailers serve different needs. A shipper moving a mixed grocery load to multiple store locations has different requirements than one moving a single-commodity full truckload direct to a distribution center.

Produce Season in Canada and Cross-Border Context

For Canadian shippers and retailers, produce season carries additional complexity. A significant portion of fresh produce consumed in Canada during spring and early summer originates in the United States — particularly from Florida, California, and the Pacific Northwest — as well as from Mexico. That means cross-border reefer capacity is under pressure at the same time domestic capacity is tightening.

Delays at border crossings compound the time-sensitivity challenge inherent to fresh produce. Customs documentation errors, carrier compliance gaps, or equipment shortages on one side of the border can turn a two-day transit into a three- or four-day transit — a difference that can meaningfully affect the shelf life of the product on arrival.

For shippers moving produce across the Canada-U.S. border, working with a carrier that has established cross-border infrastructure, trained drivers with USDA clearance, and customs expertise on both sides of the border removes a significant source of risk.

Looking Ahead

The produce freight market continues to evolve. Consumer demand for fresh, locally sourced, and minimally processed produce is driving growth in the cold chain sector. At the same time, regulatory requirements under FSMA are tightening, traceability expectations from retail buyers are increasing, and the technology bar for temperature monitoring and documentation is rising.

For shippers, the takeaway is that produce season rewards preparation and penalizes passivity. The carriers and logistics partners who invest in equipment quality, compliance infrastructure, driver training, and technology don’t just perform better during peak season — they protect their customers’ product and their customers’ margins year-round.

Produce season will tighten the market again this year, as it does every year. The question is whether your supply chain is positioned ahead of the surge, or scrambling to catch up once it arrives.

Bison Transport provides temperature-controlled freight solutions across Canada, the United States, and Mexico. Our refrigerated fleet is equipped with satellite GPS and 24/7 temperature monitoring, maintained to food-grade standards, and operated by drivers trained in FSMA compliance and USDA clearance procedures. From frozen to fresh to protect-from-freeze, Bison has the equipment and expertise to keep your produce moving through peak season and beyond.