For flower farmers worldwide, the ancient rules of weather have stopped holding. In Kenya’s Rift Valley, a lake that spent decades receding is now rising without warning, swallowing rose farms that once depended on its water. In Colombia, Valentine’s Day harvests swing between killing frosts and record heat that pushes blooms to open ahead of schedule. Dutch tulip fields drown under winter rains that never used to fall. Indian marigold growers coin a new term—”wet drought”—to describe a disaster that defies the old categories of too much or too little.
The global flower trade, worth billions annually and employing more than half a million people in Kenya alone, is becoming an early and unusually visible register of climate change. Unlike grain, flowers cannot be stored against a bad season. Unlike livestock, they cannot be moved out of danger. Their entire economic value depends on narrow, ceremonial windows—a wedding date, a festival, a single retail holiday—that do not move to accommodate the weather.
A Lake That Cannot Decide
Lake Naivasha in Kenya, source of water for dozens of commercial rose farms, has reversed its behavior entirely. After years of drought that saw water levels drop by half a meter in days, the lake has risen sharply since 2015, driven by unseasonable rains on the Aberdare mountain range. Farms have watched water advance onto their land. Lina Jamwa of the Kenya Flower Council describes growers whose production has been disrupted as the lake encroaches. Some five thousand people were displaced by the rising water in a single year, including families with no connection to the flower trade.
On the other side of the Rift Valley, Ethiopia’s Lake Ziway has followed the opposite trajectory—shrinking by roughly eight percent since 2000. Frank Ammerlaan, a second-generation Dutch rose grower whose farm exports more than one hundred million stems annually, describes conditions that once seemed ideal turning precarious. Ethiopia’s highlands, like Kenya’s, now face erratic temperatures, extended droughts, and violent storms.
Heat, Frost, and the Valentine’s Day Window
Colombia’s flower industry, which supplies roughly seventy-five percent of the roses sold in the United States, compresses about fifteen percent of annual production into a ten-to-fifteen-day sprint before Valentine’s Day. That narrow window leaves no margin for climate disruption. In 2010, a severe cold snap destroyed a significant share of holiday production. By Valentine’s 2024, the opposite problem had emerged: record-high temperatures pushed roses to bloom early, throwing off harvest schedules. Elkin Farfán, a planning manager at Colombian producer Phytotech, described El Niño arriving with “clear blue skies and high-temperature records,” making it “a challenging time for the industry.”
Tulips Drowning in Holland
In the Netherlands, Arjan Smit has grown tulips since 1940, but the climate his family business was built around is disappearing. “We have more wet periods,” he says. “Last year, it was just raining, raining, raining.” His fields lost roughly eight to nine percent of planted bulbs to water damage, and an additional four percent were never planted at all—a cumulative loss of at least thirteen percent of the bulbs needed for the following season. Winters that tulips depend on for cold, dry dormancy are becoming milder and wetter, while spring heatwaves arrive earlier. Annual temperatures in the Netherlands have risen 2.3 degrees Celsius since 1901, measurably reducing frost days.
Marigolds and Monsoons in India
Indian marigold farmers, who supply flowers for weddings and festivals including Diwali and Dussehra, have watched unseasonal rain destroy crops just as they approached harvest. In Maharashtra’s Thane district, standing water turned blooms black, and traders refused to buy the blighted flowers. One grower from Karmala described carrying four tons of salvaged flowers through knee-deep water to reach market by train at midnight, only to receive fifty rupees per kilogram—a fraction of the expected price.
Fire and Frost in California and China
In California, the 2017 Thomas Fire forced emergency evacuations at Carpinteria’s flower farms, scorched fields, and halted shipping for nearly a week. “These aren’t crops that can just hang on trees and wait,” said Kasey Cronquist of the California Cut Flower Commission.
In China’s Yunnan province—source of roughly seventy percent of commercially sold flowers in the country—an unusually late frost in November 2025 damaged crops even inside greenhouses, driving wholesale prices for some rose varieties up by about twenty renminbi per bundle.
What the Pattern Means
Each region’s story is different. The underlying plot repeats: a climate that flower farming was built around is no longer the climate that shows up. Growers are adapting with solar arrays, heat-tolerant varieties, improved drainage, and biological pest control. But these measures cannot outpace a shift that has already begun to rewrite the conditions on which a global industry depends.
The flower trade, perhaps more than any other form of agriculture, has become a canary in the coal mine—an early warning of how profoundly the planet’s weather is changing. For growers from the Andes to the Rift Valley, the blooms themselves have become the clearest measure of a world that no longer follows the old instructions.