A new study has found that planting strips of wildflowers in apple orchards can attract natural predators of crop-damaging pests. By drawing in insects like ladybirds and hoverflies, farmers could cut pesticide use, protect yields and boost biodiversity, all while potentially saving thousands of pounds each year. The research, led by the University of Reading and published in the Journal of Agricultural Economics, points to a simple but powerful way to let nature work for farmers.
The problem with pests
The rosy apple aphid may be tiny, but it’s a major headache for apple growers. These insects distort young leaves and stunt fruit growth, leading to costly damage. Traditionally, the solution has been chemical pesticides, but these come with downsides: rising costs, growing resistance, tighter regulations and increasing environmental scrutiny.
The new study found that in years of high aphid infestation, orchards with wildflower strips had just 4% apple damage, compared to 12% without. That’s a big difference for something as simple as planting flowers. With farmers increasingly looking for nature-based alternatives, this could be a game-changer.
The flower power solution
So what exactly is a flower strip? It’s a patch of wildflowers planted either along the edges of orchards or between the rows. These flowers provide food and shelter for insects like ladybirds, lacewings and hoverflies, all of which are natural predators of aphids.
“Flower strips create a home for a team of helpful insects – like ladybirds, hoverflies and lacewings – that eat harmful pests such as aphids,” said researchers.
These insect allies don’t just tackle pests. They also help pollinate crops, improve soil health and support local wildlife. Over two years, the team observed 450 trees and measured every single apple, ensuring robust results across multiple conditions.
Dr Charlotte Howard, one of the researchers, explains: “Farmers could save money while boosting biodiversity and letting nature do some of the heavy lifting in looking after their crops.”
How much can farmers really save?
The short answer: a lot. In pest-heavy years, the researchers calculated savings of up to £2,997 per hectare when flower strips were used. Even in low-aphid years, the strips either broke even or proved cheaper than standard management practices, especially when planted in orchard margins rather than replacing productive trees.
Government incentives also help. One existing scheme offers £673 per hectare per year for establishing flower strips, which makes the case even stronger.
As the paper notes:
The flower borders ‘paid for themselves’ compared to standard primarily grass headlands… and provided significant financial benefits in high pest years.
Perhaps most importantly, the research found that where the flowers were planted mattered more than how long they were there, or how much subsidy was received.
Beyond the money: wider benefits
While the financial case for farmers is compelling, the wider environmental benefits are just as important. Wildflower strips boost biodiversity, provide vital habitats for pollinators and birds and improve the appearance and health of farmed landscapes.
They can also support carbon storage, water retention and reduce the need for chemical inputs, which helps protect surrounding ecosystems.
“There may also be non-monetary benefits,” the researchers wrote, “such as improvements to biodiversity, conservation of pollinator species and landscape aesthetics.”
To help farmers adopt this method, the team has produced straightforward guidance to get started, making this a practical, low-barrier innovation.
Caution and next steps
Of course, flower strips aren’t a one-size-fits-all fix. Benefits vary depending on the year, pest pressure and location. Some test sites saw less impact, and more research is needed on the value of planting wildflowers between tree rows rather than at the edges.
As the paper cautions:
The assumed doubling of benefits from a central strip… requires verification since it has yet to be tested in the field.
Still, the message is clear: wildflowers are a promising tool in the farmer’s toolkit, with little to lose and much to gain.
A greener future for farming
Wildflowers aren’t just beautiful, they could be a farmer’s best friend. By planting these strips, growers can reduce chemical use, save money and support a healthier environment. As agriculture faces growing economic and ecological pressures, letting nature help might be one of the simplest and smartest solutions.
More from East Anglia Bylines
