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But as 50-year-old Ortíz and other farmers busily bundle clusters of the plant to sell in markets around the capital, they quietly wonder what will be left of their livelihood down the line.

That’s because cempasuchil growers say they’ve been left reeling by torrential rains, stretching drought and other — caused by the burning of fuels like gas, oil and coal – that have grown increasingly common.

Farmers, who depend on the ebbs and flows of the weather to cultivate their crops, are on the . This year alone, cempasuchil producers said they lost up to half their flower crop from heavy rains and flooding.

“This year, we lost a lot. We struggled to even grow the cempasuchil. There were moments in which we didn’t have the money to buy fertilizer we needed,” Ortíz said. “With the cempasuchil plants, we’ve sometimes been left with nothing.”

‘Flower of the dead’

The orange flower has become a symbol of the country’s celebrations that take place every Nov. 1 and 2. Also known as the “flower of the dead”, the cempasuchil is believed to be a point of connection between the worlds of the dead and the living, with bright petals that light the path of dead souls to the altars set out by their family.

The flowers are also a crucial economic engine across Mexico, which commerce groups predict will rake in nearly 2.7 million dollars for farmers in 2025.

Ortíz and her family began growing the flower 30 years ago in their small plot of land in Xochimilco, a rural borough in the south of Mexico City where residents have continued to carry on ancient farming techniques using canals that wind through farmlands like a maze.

Every year, locals begin to plant the marigold seeds in July, and grow the plants as rainy season winds down. But they say that they’ve been dealt a heavy blow for consecutive years as heavy rains, drought, floods and other climate shifts have made it increasingly difficult to keep their crops alive.

This year, torrential rains stretching on for months wiped out more than 37,000 acres of crops across the country, according to government figures. In a visit to cempasuchil fields earlier this month in Xochimilco, Mexico City Mayor Clara Brugada said that as many of 2 million marigold plants were put at risk. Despite that, she said that production this year simultaneously broke a record of 6 million plants as farmers ramp up to meet increasing demand even as growing the flower has become more precarious.

Ortíz said the excess of rain has brought on pests, diseases and rotted the roots of her plants. She estimates she lost at least 30% of her crop, while others say they’ve lost closer to 50%.

The family has been forced to drop money on insecticides, fertilizer and more to save their crops. As they have, razor thin profit margins have turned into losses, and they’ve had to cut back on basics like beef and sweets to make ends meet.

“If I were to take a hard look at all our losses, I’d be incredibly disillusioned and even not want to grow them anymore,” she said. “We’re just trying to push forward and make sure this keeps going on.”

Adapting to climate change

Just down the road from Ortíz’s farm, government scientists are searching for long-term solutions beyond the short-term economic relief provided by the local government. In a small seed bank known as Toxinachcal, men in white suits meticulously pick through sprouts in a lab dish.

The scientists have been at work for a year and a half saving up thousands of seed variants of native plant species, including 20 variants of cempasuchil, in jars lining giant freezers in the hopes that the storage facility will be a key tool in fighting the most averse effects of climate change.

Biologist Clara Soto Cortés, head of the seed bank, said part of the reason that the crop has been devastated is because farmers in recent years have elected to use a hybrid marigold seed variant from the United States.

The seed produces a shorter more uniform-looking plant that are easier to sell en-masse and in places like supermarkets.

But that means farmers have turned away from sturdier, native breeds, which have a longer stocks and widely vary in color, size and texture. The genetic diversity of these Mexican breeds makes them more resilient to drastic climate shifts like the ones seen this year, Soto said.

“These native seeds have adapted to different geographies, in high altitudes and low, in places where there's a lot of rain or there's none at all, or where they need to be resistant to insects,” she said.

“The (hybrid) seeds have bred for another purpose. It doesn't have the genetic diversity needed to take on climate change.”

If more climate events, like the floods that roiled producers wipe out an entire crop, Soto said the bank will make seeds available to local producers to recover their crops – this time with a more resilient variant that their ancestors have been farming for centuries.

Carrying on an ancient tradition

Meanwhile, growers are scrambling to bounce back in the short term, saying the losses also represent a threat to the farming tradition their families have struggled to maintain on the edge of the dense city of 23 million people.

Carlos Jiménez, 61, has long worked the fields of Xochimilco, but began to grow the shorter marigold plants eight years ago when he noticed the hybrid was more marketable. As he's lost more crops and gotten lower prices for the plants because of the mildew gathering at their roots, he said he's begun considering ways to adapt, like building greenhouses.

“The plants get sick, they rot, and our business is snuffed out,” Jiménez said. “And with it goes our tradition because it's our economy."

Producers like Ortíz have considered the same. But their losses mean they have no money to build added infrastructure. Her family and other farmers have called on local authorities for help, but say they've received just pennies on the dollar of what they need to bounce back. Though the local government has said it continues to work to help offset the blow felt by farmers.

She said she's begun to look at other crops she might be able to farm that are more resilient than the crinkled orange flowers.

Others like Jiménez said that while the roots of plants may rot around him, for now he's holding strong.

“This plant has a deeper meaning to our lost loved ones,” he said. “These are traditions we carry down from our ancestors. They can't just disappear.”

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