Under the Greenhouse Glass: The Fight for Heat Protections in the Houseplant Industry

On the day after Labor Day, a small, determined band of activists marched past the gates of a sprawling plant nursery in Leicester, North Carolina. The air was thick and humid, the kind of oppressive heat that turns greenhouses into glass-walled ovens. Inside these structures, rows of lush, vibrant houseplants stood ready for the retail market, tended to by workers laboring in temperatures that often pushed the limits of human endurance.

The activists were not there to purchase greenery; they were there to deliver a petition to the management of Costa Farms, the world’s largest grower of indoor houseplants. Their message was simple, urgent, and centered on a fundamental human right: the protection of the workers who keep the industry alive.

A Call for Human Dignity

Among the leaders of the march was Oscar Rozo, an Episcopal clergy member who has spent years working alongside Spanish-speaking immigrants in western North Carolina. For Rozo, the petition—which demands guaranteed access to water, shade, and paid rest breaks for nursery workers—is a moral imperative.

"We’re part of the community," Rozo stated firmly to the Costa Farms managers who met the group at the facility’s entrance. "The nursery industry has been part of Asheville’s economy for a long time, but that economy cannot be built on the suffering of those who make it possible."

As the activists moved through the hallways, the scene was one of quiet tension. Workers, many of whom hold precarious immigration statuses or are tied to employer-dependent visas, watched the proceedings with a mixture of curiosity and caution, maintaining a distance that spoke volumes about the power dynamics within the industry.

The Geography of a Movement: A Multi-State Effort

The Leicester action was far from an isolated incident. It was part of a coordinated, multi-state day of action organized by WeCount, a worker-led labor and human rights group. The campaign targeted five cities across the United States where Costa Farms operates major nurseries.

Oscar Londoño, co-executive director of WeCount, had spent the earlier part of that same day in Apopka, Florida, delivering a similar petition to another Costa Farms facility. "We consider this a very historic day of action," Londoño said. "We are bringing the reality of the fields and the greenhouses to the doorstep of the corporations. And we know this is only the beginning."

This push is the latest iteration of WeCount’s "Planting Justice" campaign, an initiative designed to protect outdoor and greenhouse workers across the South. By targeting major growers, the campaign hopes to bridge the gap between consumer awareness and corporate accountability, forcing the public to confront the "human cost" behind the houseplants that decorate their homes.

The Erosion of Legislative Protections

The necessity of the Planting Justice campaign is underscored by the recent collapse of governmental protections. Since 2021, WeCount has been at the forefront of advocacy for outdoor workers. Based in South Florida, the group successfully campaigned for a municipal heat standard in Miami-Dade County—a region where heat-related deaths are projected to spike by 600 during extreme weather events.

However, those gains were short-lived. In 2024, responding to pressure from industry groups, Florida Governor Ron DeSantis signed legislation that preempted local governments from enacting their own heat safety standards. Governor DeSantis defended the move by suggesting that local, patchwork regulations "could cause a lot of problems" for businesses.

For advocates like Londoño, this legislative roadblock represents a failure of the political system to protect its most vulnerable residents from the accelerating climate crisis. "We know that every year this crisis is getting worse," Londoño noted, pointing to the record-breaking temperatures driven by human-caused climate change. "But increasingly, legislative avenues are becoming more and more limited. We have to look for other ways to ensure survival."

Data and the "Deadliest Weather"

The urgency of this fight is backed by grim statistics. Heat is officially classified as the deadliest form of extreme weather in the United States, yet the true scale of the crisis is likely masked by systemic underreporting. A two-year investigation by Boston University and NPR revealed that official death counts significantly underestimate the number of fatalities caused by heat exposure.

The regulatory landscape offers little relief. While the Occupational Safety and Health Administration (OSHA) had been inching toward a federal heat standard—a move that would have provided uniform guidelines for employers nationwide—those efforts have stalled amidst political gridlock and congressional opposition.

Agricultural workers, including those in the nursery industry, are particularly exposed. They are explicitly excluded from federal collective bargaining protections under the National Labor Relations Act. Consequently, they possess little leverage to demand safer conditions. Research indicates that agricultural workers are more than 35 times more likely to die from heat-related illnesses than workers in other sectors, a disparity that activists argue is both preventable and inexcusable.

The Model: Worker-Driven Social Responsibility

The strategy employed by WeCount is modeled after the "Fair Food Program," a highly successful initiative launched in 2011 by the Coalition of Immokalee Workers. The program is widely regarded as the "gold standard" for agricultural labor protections in the U.S. It utilizes a worker-driven social responsibility (WSR) model, where major retail buyers agree to purchase produce only from growers who adhere to a strict, worker-enforced code of conduct.

The program has proven that when workers have a seat at the table, conditions improve. This year, for instance, farmworkers under the program successfully negotiated for year-round access to electrolyte beverages, recognizing that hydration is not merely a "summer" issue but a daily health requirement.

WeCount hopes to replicate this success with Costa Farms. Their proposed code of conduct is straightforward:

1. Mandatory Education: Training for both workers and supervisors on the early warning signs of heat illness.
2. Guaranteed Resources: Reliable access to clean water, shaded areas, and mandatory rest breaks.
3. Monitoring Systems: Established, transparent mechanisms to track and respond to heat stress in real-time.

The Corporate Response

Costa Farms, in a statement provided to the press, pushed back against the characterization of their facilities as unsafe. The company emphasized its commitment to employee well-being, citing a history of workplace awards and the presence of a full-time, on-site nurse and a functional medical clinic.

"Our robust heat protection policy is aligned with the proposed OSHA heat safety rules," said Ariana Cabrera de Oña, senior vice president, general counsel, and head of human resources at Costa Farms.

The company detailed several measures, including daily five-minute safety briefings implemented after Hurricane Helene, and a protocol to increase break frequency and hydration stations when specific "wet bulb" temperature thresholds are reached.

However, organizers argue that corporate policies on paper often fail to translate to the realities of the greenhouse floor. Londoño noted that while companies may report providing water, workers across the industry frequently report that the available water is either tepid, contaminated with chemical smells, or served from coolers that have developed mold.

Alejandro Gonzalez, a nursery worker originally from Guatemala, shared a harrowing account at a Florida rally. Describing summer temperatures that occasionally climb above 110 degrees Fahrenheit, Gonzalez stated, "They don’t give us cold or clean water. They don’t provide any breaks or shade."

Implications: A Broader Reckoning

The stakes of this conflict extend beyond the gates of any single nursery. A survey conducted by WeCount found that 86% of houseplant workers industry-wide reported experiencing dangerous incidents, including heat illness, pesticide exposure, and other workplace accidents. More than two-thirds reported being denied basic breaks and days off.

The vulnerability of these workers is compounded by the visa system. Many are employed through the H2-A program or remain undocumented, making them entirely dependent on their employers for housing and legal status. This "tied" relationship creates a chilling effect, where speaking out against unsafe conditions carries the threat of immediate termination and deportation.

WeCount’s next phase involves pressure on the supply chain. By calling on major retailers like Home Depot and IKEA—who serve as the primary conduits for Costa Farms products—to source only from growers who sign the code of conduct, activists hope to force a market-wide shift.

As for the immediate future, the petition delivery in Leicester ended abruptly. Shortly after entering the facility, management requested that the activists leave the premises. They complied, but the petition remained—a document now firmly in the hands of the company.

The march in North Carolina was a symbolic assertion of power, but it was also a warning. As the climate continues to warm and the legislative safety net continues to fray, the movement for worker-driven social responsibility is growing. For the thousands of workers tending to the greenery that fills American homes, the demand for dignity is not just a request—it is a necessity for survival.