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The carbon math of flying flowers from South America

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The Carbon Math of Flying Flowers from South America

Every February, millions of roses, lilies, and alstroemeria arrive by cargo jet at Miami International, destined for Valentine’s bouquets from Boston to Boise. What’s less visible: the invisible plume of CO₂ trailing behind each stem–an overlooked detail in America’s love affair with imported blossoms.

Quick Answer: What’s the Carbon Footprint of Flying Flowers from South America?

South American flowers, particularly from Colombia and Ecuador, dominate the US cut-flower market, but their journey comes at a hefty environmental cost. Shipping a single rose from Bogotá to New York (about 2,500 miles) emits roughly 0.2 kg of CO₂, according to a 2024 study by the Carbon Trust. For a typical dozen-rose bouquet, that’s 2.4 kg of CO₂ before it even reaches the florist–about the emissions of driving a gasoline car for 6 miles. Multiply this by the over 5 billion stems imported to the US annually, and the carbon math adds up quickly.


How Did South American Flowers Become the Backbone of US Floristry?

Post-NAFTA Bloom

The US didn’t always depend on Colombia or Ecuador for florals. Domestic greenhouses once reigned. But after the 1991 Andean Trade Preference Act and North American Free Trade Agreement (NAFTA), tariffs dropped, and South American growers surged ahead. By 2026, 78% of all cut flowers sold in the US come from Colombia and Ecuador, as per USDA import data.

Why Not Local?

  • Cost: Labor and land are significantly cheaper in Colombia–florists report wholesale rose prices at $0.50 per stem versus $1.50 for California-grown.
  • Climate: Year-round temperate weather near the equator means predictable, high-volume production without expensive greenhouses.
  • Logistics: Quick air freight and cold chain logistics make overnight delivery routine.

A decade ago, American Grown declared, “Flowers should be as local as lettuce.” But with stiff competition, most US farms can’t match price, color range, or reliability.


The Hidden Emissions Equation

Where Do the Emissions Come From?

Dr. Elena Morales, environmental scientist with the University of Florida, breaks down the typical emissions profile:

  • Growing: Fertilizer, irrigation, and greenhouse heating (where used).
  • Processing: Refrigeration, packaging, and pre-cooling.
  • Air Freight: The biggest factor–cargo jets burning jet fuel.
  • Trucking: From Miami to retailers, often in refrigerated trucks.

“The jet ride is the emissions elephant in the room–accounting for 60% to 70% of a cut flower’s total footprint,” explains Dr. Morales.

The Math in Perspective

Step % of Total CO₂ Example Emissions (per dozen roses)
Growing 15% 0.36 kg
Processing 10% 0.24 kg
Air Freight 65% 1.56 kg
Trucking 10% 0.24 kg
Total 100% 2.4 kg

During peak holidays, over 30 cargo flights land daily in Miami–each carrying up to 100 tons of blooms.


Carbon Math: Comparisons That Hit Home

Valentine’s Roses vs. Other Imports

A bouquet’s CO₂ footprint rivals some surprising items:

Product CO₂ (per kg or unit)
Dozen imported roses 2.4 kg CO₂
1 avocado (shipped by air) 1.1 kg CO₂
1 lb California beef 27 kg CO₂
1 lb local apples 0.3 kg CO₂

So, imported roses aren’t the planet’s worst offenders–but for something so ephemeral, that’s a sizable impact.

The Hidden Miles

  • Average journey: 2,500-3,100 miles (Quito/Miami/NYC)
  • Time in transit: Under 48 hours if all goes to plan

Sustainable Floristry: Are Alternatives Gaining Ground?

The Local Flower Movement

A new generation of US florists, like Brooklyn’s Wildroots Flowers (owner: Lisa Tran, certified in Sustainable Horticulture), prizes US-grown, seasonal flowers:

  • Supports local farmers
  • Drastically lower miles (and emissions)
  • More “garden-inspired” varieties, but less year-round availability

Lisa Tran notes, “In June, I can source 90% of my studio’s stems from New York and New Jersey farms. But in February, it’s 20% at best–and cost triples for comparable roses.”

Direct Comparisons

Source Emissions per bouquet Price per dozen roses Variety (off-season)
South America 2.4 kg CO₂ $10-$15 wholesale Extensive
US Grown 0.5-1 kg CO₂ $18-$30 wholesale Limited

Eco-Certification Schemes

Look for labels like:

  • Rainforest Alliance
  • Veriflora
  • Certified American Grown

These may indicate reduced pesticide use, improved labor standards, or minimized emissions–but standards (and enforcement) vary.


What Can Florists and Consumers Do?

For Florists

  1. Source locally in peak season, supplement in winter from sustainable importers.
  2. Offer “seasonal bouquets” with full transparency about origin.
  3. Offset emissions–some services now plant trees per bouquet sold.

For Flower Lovers

  • Ask florists about origin, certification, and shipping.
  • Try dried or potted plants (cutting recurring demand).
  • Avoid last-minute delivery services; they often require extra flights/trucking.

“Every stem is a little traveler with its own passport stamp. The real luxury is knowing where your flowers grew and how they reached you.”
– Lisa Tran, Wildroots Flowers


FAQ: Flying Flowers and Their Carbon Footprint

How much CO₂ does a bouquet of imported roses produce?

A dozen roses imported by air from South America to the US emits about 2.4 kg of carbon dioxide, mainly from jet fuel. That’s similar to driving a small car six miles.

Why do most US florists use South American flowers?

Because South American farms produce flowers year-round at much lower costs, thanks to ideal climate and cheaper labor. Fast shipping and cold logistics allow US florists to offer a vast selection, even in winter.

Are local US-grown flowers always lower-carbon?

Usually, but not always. In-season, outdoor-grown US flowers have far less air-freight impact. However, if grown in heated greenhouses (especially in cold months), emissions can close the gap–or even surpass flown-in flowers.

Can I buy truly sustainable bouquets in the US?

Yes–look for florists specializing in local, seasonal, or certified sustainable flowers (e.g., Rainforest Alliance). Some online services are transparent about origin and carbon offsets.

What’s the future for eco-friendly floristry?

Expect more demand for local, slow flowers, and for major importers to face pressure to cut emissions (like using biofuels or more efficient supply chains). Certifications and consumer education will play a bigger role.


What’s Next? Rethinking How We Celebrate with Flowers

This Valentine’s, Mother’s Day, or graduation, think like a climate-savvy gift-giver. Ask your local florist where your bouquet began its journey. Try a seasonal bouquet, or mix in a potted plant. Each choice shifts the carbon math–flower by flower, mile by mile.

Alex Melnikov

Александр Мельников – метеоролог, климатолог и автор портала floristcheck.com. В своих статьях он опирается на международные источники, результаты наблюдений ВМО и спутниковые данные.

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