A flower farmer’s worst fear used to be a single frost. Now it’s a climate that refuses to follow the rules—anywhere on Earth.
The dread arrives before dawn, silent and specific. It is not the roar of a wildfire or the crash of a flood, but the quiet realization that something in the air itself has broken faith. A degree too warm overnight. A millimeter of rain at the wrong hour. A frost three weeks early, or a rainy season that simply never shows up.
Flowers are weather made visible. Their color, stem length, fragrance—the very day they choose to open—are instructions written by temperature, light, and water. For millennia, growers have read those instructions and answered them. Over the past two decades, those instructions have started contradicting themselves. And the farmers who supply the world’s markets, roadside stalls, and Valentine’s Day bouquets are the first to notice when the old rules stop holding.
This story travels from the volcanic highlands of the Andes to the shrinking shores of Kenya’s Rift Valley, from the bulb fields of Holland to the marigold plots outside Pune, from Ethiopian rose greenhouses to a rented flower farm at the foot of California’s Santa Ynez Mountains, and finally to a trading town in southern China where a flower changes hands roughly every four seconds. In each place the crop is different—roses, tulips, marigolds, ranunculus, carnations, chrysanthemums—but the underlying plot repeats itself with the persistence of a rhyme: a climate that flower farming was built around is no longer the climate that shows up.
A Lake That Grows Roses, Then Swallows Them
Lake Naivasha sits ninety minutes from Nairobi’s international airport—close enough that a rose cut on Tuesday morning in Kenya stands in a London vase by Wednesday afternoon. More than fifty commercial farms line its shores, making Kenya one of the world’s top rose-exporting nations, sending flowers primarily to the European Union, the United Kingdom, and increasingly South Korea.
For decades, the story told about Naivasha’s flower industry was a story about drought. Rose cultivation is famously water-intensive: estimates place the water required for a single stem between seven and thirteen liters. Multiply that by millions of stems and the arithmetic becomes sobering. In 2009, what Jane Ngiga, then chief executive of the Kenya Flower Council, called “the worst year in terms of drought, countrywide,” emptied lakes across the Rift Valley and forced growers to reckon publicly with how much of the region’s water was being asked to grow flowers that would be enjoyed and discarded within a week, thousands of miles away.
But the more disorienting turn has been the opposite one. Since around 2015, Lake Naivasha has been rising—not receding. Unusually heavy rains falling on the Aberdare mountain range have pushed water levels up year after year in a pattern that has startled scientists and devastated shoreline communities. Lina Jamwa, head of membership engagement at the Kenya Flower Council, describes farms that have watched the lake advance onto their land. “Some growers have already seen parts of their farms encroached by the rising lake waters, disrupting production activities,” she has said. The council does not yet have a precise figure for how much farmland has vanished beneath the water.
The volatility runs in both directions. Higher average temperatures and shifting rainfall patterns are disrupting the growth cycles that rose varieties were bred to follow. New pests are finding their way into greenhouses that once excluded them by climate alone. An officer with the Kenya Plant Health Inspectorate Service points to the False Codling Moth, a pest “that wasn’t there some years ago” and is now an emerging threat with “a changing behavior”—a shift widely attributed to warming temperatures expanding the moth’s viable range.
Patrick Mbugua, general manager of Wildfire Flowers Kenya, put the compounding pressure in plain terms: “We’ve seen increased disease pressure due to unusual weather patterns, sometimes we have excessive hot weather which sees a jump in the number of pests, and other times unusually low temperatures which increases fungal infections, reducing yields.”
The economic stakes are enormous. Kenya’s flower sector, worth billions of shillings annually, employs more than half a million people directly and indirectly, according to estimates cited by Mohamed Adow, director of the Nairobi-based think tank Power Shift Africa. “Roses are a major part of the Kenyan economy,” Adow has said, framing the industry’s climate exposure as “yet another example of the future we face if governments continue to let the climate crisis wreak havoc.”
A Second Valley, a Second Shrinking Lake
Nine hundred miles north, in Ethiopia’s own arm of the Great Rift Valley, a strikingly similar story unfolds around Lake Ziway. Ethiopia’s floriculture industry is younger than Kenya’s—its transformation “from famine to flowers” has taken place mostly over the past twenty years—but much of that growth has clustered along Ziway’s shores, where volcanic soils, equatorial light, and reliable freshwater once made for near-ideal growing conditions.
Frank Ammerlaan, a second-generation Dutch rose grower, arrived in Ethiopia in 2006 to found AQ Roses, a family-owned nursery that now spans fifty hectares and exports more than one hundred million stems a year. He is candid about how precarious the underlying climate math has become. “Climate-wise, growing roses is not ideal, even impossible in many places,” he has observed.
Lake Ziway has seen its water level drop by roughly a meter over two decades, and its surface area has shrunk by an estimated 8 percent since 2000. Fish populations have declined, surrounding wetlands have dried, and communities report growing scarcity. According to a 2024 Christian Aid analysis, approximately 59 percent of all roses traded internationally originate in just five countries of the Global South—Kenya, Ethiopia, Uganda, Ecuador, and Colombia—all confronting escalating extreme-weather risk.
When Cold Weather Becomes the Emergency
If East Africa’s flower belt is a story mostly of water, South America’s flower-growing highlands tell a story equally shaped by temperature swings that arrive with almost no warning.
Ecuador’s rose industry, centered on the Cayambe and Tabacundo valleys north of Quito at altitudes between 2,800 and 3,000 meters, has built its identity around a specific climatic bargain: near-constant equatorial daylight, cool nights, and intense highland sun that produce roses prized for exceptionally long stems and large blooms. It is a bargain that depends on a narrow band of stable conditions—and narrow bands are the first to break when a system becomes more volatile.
In 2010, an unusually severe cold snap swept through Colombia’s savanna surrounding Bogotá just weeks ahead of Valentine’s Day—the single most important date on the global flower calendar, responsible for roughly 12 percent of Colombia’s annual flower sales. At Unique Collection Farms, workers sprayed water over their rose beds, an old technique meant to release heat as the water froze. It was not enough. “El Niño is already bringing colder than normal nighttime temperatures,” Alejandro Llano, the company’s general manager, told reporters at the time.
That same year brought a second, opposite catastrophe. Colombia’s 2010 rainy season was the worst in sixty years, triggering widespread flooding. Though the floodwaters largely spared flower-growing regions, the lingering humidity drove up costs as growers fought fungal disease. “If you don’t do well in Valentine’s it’s a lost year,” summed up Fernando Arenas of the flower company El Redil.
More recent cycles have repeated the pattern. In the run-up to Valentine’s Day 2024, record-high temperatures pushed roses to bloom earlier than intended, throwing off carefully timed harvest schedules. “El Niño has definitely arrived with clear blue skies and high-temperature records across Colombia,” said Elkin Farfán, a planning manager at the filler-and-foliage producer Phytotech, adding that “it is a challenging time for the industry, and many exporters are struggling to keep afloat.”
The Bulb Fields of Holland, Rewritten by Rain
Six thousand miles northeast, in the flat water-managed landscape of the Netherlands, an entirely different flower and a different kind of weather crisis converge.
Arjan Smit has spent his entire adult life among tulips, cultivating a family business his grandfather started in 1940 in Spierdijk, North Holland. “The climate has changed. We can feel that,” he told a reporter in 2024. “We have more wet periods. Last year, it was just raining, raining, raining, and you can see the result.”
Walking his rows, he points out muddy gaps where entire tulips drowned. “Last winter, it was very wet. In our sector, we lost around eight to nine percent of the bulbs in the field. They were killed by water. And we planted four percent fewer. That means we have lost a minimum of thirteen percent of the new bulbs for next year.”
The physics behind Smit’s losses are well understood: a warmer atmosphere holds more water vapor, translating into wetter winters across northwestern Europe, even as hotter, drier stretches in spring and summer squeeze the plant from both directions. Tulip bulbs require a long, cold, relatively dry winter; without it, stems come up short, flowers emerge lopsided, or fail to bloom at all.
“When I started this work around thirty years ago, we had to water the fields two to four times in a spring season,” Smit said. “In the last ten years, sometimes we have to water every week. That means ten times. It’s much more expensive.”
The consequences have rippled directly into global supply. The autumn of 2023 brought unusually heavy rainfall across the Netherlands, delaying bulb planting. De Vroomen Garden Products, a major wholesale supplier, reported it could source only about 80 percent of the tulip bulbs the market required that year; the shortfall later grew to roughly 30 percent.
Marigolds, Monsoons, and India’s Festival Calendar
In India, the weather’s assault on flower farming plays out on a shorter, more frequent cycle, tied tightly to a ritual calendar that leaves growers almost no room to absorb a bad week.
Marigolds occupy a specific and important place in Indian life: strung into garlands for weddings, temples, and festivals including Dussehra, Diwali, Ugadi, and Onam, they are grown by hundreds of thousands of smallholder farmers as a reliable secondary cash crop. In the autumn of 2025, days of unrelenting, unseasonal rain destroyed large stretches of the crop just as flowers were approaching festival-season harvest. Standing water turned blooms black and rotten; humidity spread a fungal blight local farmers call karpya rog.
“The flowers were just about to bloom when the rain came,” one grower reported. “Within a few hours, everything was destroyed. Now there’s no harvest, no market and no income.” Ganesh Patil, farming two acres of marigold in Bhiwandi taluka, said the rains “completely wiped out” his crop.
One farmer from Karmala recounted a desperate journey to salvage what remained: “I managed to bring four tons of flowers through knee-deep water and arrived in Pune by train at midnight. Even now, I am getting only fifty rupees per kilogram. People are not buying.”
His phrase—”a wet drought”—captures something distinctly modern: the old vocabulary of agricultural disaster, built around the binary of too much rain or too little, increasingly fails to describe conditions that combine the worst features of both, arriving out of season and stripped of predictability.
Fire on the California Coast
In December 2017, the Thomas Fire—then one of the largest wildfires in California’s history—swept toward the seaside city of Carpinteria, home to a concentrated cluster of flower farms. Dani Hahn, owner of Rose Story Farm, watched firefighters set a controlled backburn to stop the advancing blaze. “We know we live in a desert climate and are prone to wildfires, but I don’t think anyone could expect the scope of this,” she said afterward.
Kasey Cronquist, then chief executive of the California Cut Flower Commission, described the region as “pretty fortunate”—the fire had claimed a firefighter’s life and destroyed more than seven hundred homes, but most flower farms survived. What could not be avoided was the interruption to shipping. “These aren’t crops that can just hang on trees and wait until this thing passes,” Cronquist noted. “It’s a very perishable product that just needs to keep moving.”
For growers throughout California’s flower-producing regions, from Carpinteria’s coastal greenhouses to the seasonal ranunculus fields further south, wildfire and the drought that fuels it have become a recurring feature of the growing calendar.
Cherry Blossoms Arrive Ahead of Schedule
In Japan, climate change is rewriting one of the most closely watched natural calendars on the planet—the blooming of the cherry blossom, or sakura—in ways reshaping tourism, tradition, and horticultural science.
Tokyo’s cherry trees, which bloomed on average around March 29 between 1961 and 1990, had shifted to an average bloom date of March 24 by the period between 1991 and 2020, according to Daisuke Sasano, a climate risk management officer at Japan’s Meteorological Agency. In Kyoto, cherry blossoms hit full bloom on March 26 in one recent year—ten days ahead of the historical average and the earliest date since record-keeping began in 1953.
“Our studies have shown that the start of cherry blossom season is closely linked with the average temperature in February and March,” Shunji Ambe, an agency official, has explained. Elizabeth Wolkovich, an associate professor at the University of British Columbia, has called Japan’s long, precise cherry blossom record one of the most powerful windows into the pace of planetary warming: “To me, the cherry blossom record really captures how extreme these changes are.”
But the mechanism carries an unsettling twist. Cherry buds form during summer, then enter a dormant state broken only by sufficient cold; a warmer winter can delay flowering—or, in projections by researchers at Japan’s International Research Center for Agricultural Sciences, prevent it entirely. Their models suggest that under continued warming, Somei-Yoshino cherries could eventually stop flowering at the southern limits of their current range.
A Market Where a Flower Sells Every Four Seconds
In Dounan, on the outskirts of Kunming in China’s Yunnan province, the scale of the modern flower trade becomes almost abstract. Yunnan is known as the “Flower Province,” producing roughly 70 percent of all commercially sold flowers in China from an estimated 800,000 farmers across 70,000 hectares. Wholesale deals in Dounan reportedly close once every four seconds.
But even this favorable climate is not immune. In late November 2025, Yunnan experienced an unusually long rainy season followed by an early, severe frost. Temperatures fell as low as minus 2.2 degrees Celsius, with sub-zero readings recorded inside greenhouses that would ordinarily buffer crops. Major growing districts reported extensive damage, hitting smaller and mid-sized growers hardest. Wholesale prices for some rose varieties rose by roughly 20 renminbi per bundle in the weeks that followed.
What the Growers Are Learning
No single story amounts to proof of a planetary trend; weather has always been variable, and flower farming has always been a gamble. What is harder to dismiss is the pattern that emerges from stacking these stories side by side: a Kenyan lake that reversed direction, displacing the farms once blamed for depleting it. An Ethiopian lake shrinking as the flower economy grows. Colombian growers spraying water to keep roses from freezing one year, then racing against early bloom caused by unprecedented heat a few years later. A Dutch farmer watering ten times a season instead of two to four and still losing bulbs to rot. Indian farmers coining the phrase “wet drought.” A Californian rose farm scorched by wildfire. A cherry blossom record spanning twelve centuries, broken repeatedly within a single decade.
Growers everywhere are adapting—solar power in Kenya, biological pest control in Ecuador, drought-tolerant plant trials in Dutch gardens, disaster relief appeals from Indian cooperatives, fire-preparedness infrastructure across California, and an accelerating push toward domestically bred, climate-resilient flower varieties in Yunnan. None of these responses, on its own, resolves the underlying problem. Taken together, they describe a global, decentralized, labor-intensive industry improvising its way toward a future in which the climatic assumptions built over twenty, fifty, or, in Japan’s case, many hundreds of years can no longer be taken for granted.
What remains constant, across every farm and every crop, is the particular vulnerability of a flower itself: unlike grain, it cannot be stored; unlike livestock, it cannot be moved; its entire economic value depends on a narrow, ceremonial window of time—a wedding date, a religious festival, a single retail holiday—that does not move to accommodate the weather, even when the weather refuses to cooperate. It is that unforgiving combination of biological fragility and calendar-bound demand that makes the flower trade an early and unusually visible register of how much the climate growers depend on has already begun to change.