BLOGS

Pesticides: The Word That Kills Nuance

The entire chain – from grower to exporter to florist – needs to stop rewarding the claim over the craft, and start making room for the full story.

By: THOMAS KERN | 12-05-2026 | 5 min read
Voices of the Industry Sustainability
Pesticides spray

The word "pesticides" does something strange to a conversation. It flattens a complex reality almost instantly. As if an entire greenhouse, with everything that lives, grows, fails, and recovers inside it, can be reduced to one simple question: "Is it pesticide-free?"

A Grower Has to Decide

Anyone who works in a greenhouse every day sees something very different. A leaf that looks just slightly off. Thrips hiding inside a flower bud. A sticky trap catching more than it did the week before. A whitefly hotspot spreading faster than the beneficial insects can keep up with. Then comes the moment when a grower has to decide: wait a little longer, monitor more closely, introduce more beneficial insects, or intervene in a targeted way?

 

Thomas Kern blog pesticides quote

Thomas Kern blog pesticides grower spray roses
Grower checking his flowers. Image by @royalbrinkmanglobal.

 

 

That kind of judgment has almost disappeared from public debate. All that nuance collapses into a single catch-all term: pesticides. It no longer matters whether a product is used as a targeted correction after months of preventive work, or whether a grower relies mainly on chemistry. It no longer matters whether a grower has spent years scouting, using biological control agents, managing climate conditions, and building crop resilience. Once that single word enters the conversation, everything becomes tinged with the same suspicion.

Can a Grower Deliver Pesticide-Free Flowers?

Working at Royal Brinkman, I see it immediately in conversations with retailers. Growers who have changed their systems step by step and are now showing residue levels that would have been unthinkable ten years ago still face the same question: "Can you deliver pesticide-free flowers?" Not how the system works. Not what the actual risks are. Not how many interventions they have managed to avoid. Only whether the final product fits a label.

For decades, crop protection in floriculture relied heavily on chemical corrections. That history left its mark. The public mistrust that followed was not without reason. But when mistrust dominates the entire conversation, it obscures how much has already changed. Many growers have made real progress. Others are still catching up, and some are leaning more on narrative than on genuine system change.

 

Thomas Kern blog pesticides on pink rose
Aphids on a pink rose. Photo courtesy of and licensed to Royal Brinkman.

 

The Wider Story as a Single Claim

That pressure reshapes how even the most progressive growers think. Someone who has spent years building a genuinely integrated system starts measuring that system against a different question: not whether it works, but whether it can prove the absence of pesticides. The wider story – the monitoring, the combinations, the trade-offs, the targeted corrections that still have a role – gets compressed into a single claim. A system that includes a well-chosen product with a better risk profile quietly becomes harder to defend, because it no longer fits the label.

That logic travels through the entire chain. Retailers ask for words that consumers trust. Exporters look for proof that will hold up in a sales conversation. At the very end, the florist is holding a bouquet while a customer asks whether the flowers are chemical-free. By then, the story of monitoring, timing, beneficial insects, targeted corrections, and risk assessment has been compressed so many times that almost nothing survives.

 

Thomas Kern blog pesticides sticky traps
Early detection of pests with sticky traps and signal rolls is essential for staying ahead of potential threats in the greenhouse. Photo by @royalbrinkmanglobal.

 

About the Word "Pesticides"

I regularly hear the word "pesticides" used in political debate as if it describes one single category. Yet the word itself is broader than many people realize. Biological products, pheromones, and microorganisms are also legally classified as plant protection products – yet most people don't know that. When the word “pesticides” becomes the shorthand for everything the public fears, political pressure can easily reach products and tools that help growers reduce their dependence on synthetic chemistry. Growers need exactly that distinction if they are to move away from products with a higher environmental impact, including persistent substances and products that carry greater risks to people and the environment.

 

Thomas Kern blog pesticides florist bouquet
Image by @royalbrinkmanglobal.

 

Anyone working in this field knows the feeling: as crop protection moves further into the public spotlight – television debates, parliamentary hearings, consumer campaigns – the space for an honest conversation shrinks. What's left is mostly defensive: justifying decisions, softening the message, or saying nothing at all. The real work gets no airtime. Spotting pest pressure before it builds. Deciding when not to intervene. Finding the right combination of biological control and low-impact pesticides. Understanding the crop as a system, not a tick-box exercise.

A greenhouse runs on timing, balance, and conditions that shift by the day. That kind of work does not fit into one word. A grower starts with a system of careful decisions. The supply chain reduces it to a simple claim. By the time it reaches the florist's counter, only one question remains: is it pesticide-free, yes or no?

Make Room for the Full Story

The honest answer does not fit on a card attached to a bouquet. Telling a better story will not be enough. Growers who still rely more on narrative than on real change need to stop talking and start making progress. And the entire chain – from grower to exporter to florist – needs to stop rewarding the claim over the craft, and start making room for the full story. When everything is simply called pesticides, the difference between genuine craftsmanship and convenient storytelling disappears. Floriculture has worked too hard to let that distinction fade.

 

Thomas Kern blog pesticides florist white Lisianthus
Photo courtesy of and licensed to Royal Brinkman.

 

Header and feature image courtesy of and licensed to Royal Brinkman.

FAQ

Why is the word "pesticides" so complicated in floriculture?

Because it covers a much wider reality than most people realize. In a greenhouse, crop protection is not just about spraying chemicals. It can include scouting, biological control, climate management, beneficial insects, pheromones, microorganisms, and targeted corrections. When everything gets grouped under one word, the real work behind a healthy crop often disappears.

Can flowers really be completely pesticide-free?

That is the question many retailers and consumers ask, but it is not always the most useful one. A better question is how the crop was grown, how often interventions were needed, what kind of products were used, and how the grower managed pest pressure. Some growers have reduced residues enormously, but the full story is more complex than a simple yes or no.

What role do beneficial insects play in modern crop protection?

Beneficial insects are an important part of integrated crop protection. They help control pests such as thrips, whitefly, and other greenhouse problems before they get out of hand. But they are not a magic button. Growers still need to monitor, adjust timing, manage conditions, and sometimes make targeted corrections when pest pressure becomes too high.

Why do growers sometimes still need targeted corrections?

Even in a strong biological system, pest pressure can change fast. A hotspot can spread, weather conditions can shift, or beneficial insects may not keep up quickly enough. In those moments, a grower has to decide whether to wait, add more biological control, or use a carefully chosen product with a lower risk profile.

What should florists know when customers ask about pesticide-free flowers?

Florists can help by moving the conversation beyond a simple label. Instead of only answering whether flowers are pesticide-free, they can explain that many growers are working with integrated systems, lower-impact solutions, biological control, and careful monitoring. The real story is about progress, responsibility, and craftsmanship in the greenhouse.

Thomas Kern profile picture
Thomas Kern

Thomas Kern is Manager Business Development & Strategy at Royal Brinkman, an international horticulture supplier. He holds board positions in Dutch industry associations active in crop protection, biological control, and distribution.

Thomas has spent more than two decades working with professional growers; long enough to know that the gap between how horticulture is discussed in public and what it actually takes to grow a reliable crop is wider than most people realize. His work sits at the intersection of business strategy, integrated crop management, and sector policy, with a particular focus on high-tech greenhouse production.

In his writing, Thomas takes that gap seriously. He writes about biological control, digital decision support, and the logic behind pesticide regulation in Europe – not from the outside looking in, but from within a sector that is asked to change faster than the systems around it are designed to allow. His recurring question is simple: how do we build a future for horticulture that is ambitious in public debate and workable in the greenhouse?

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