The city of Oslo now has what it’s calling a bee highway – a path of flowering plants designed to keep bees well-fed as they pass through the urban area. Supporters hope that initiatives like this one can help protect bees – one third of Norway’s native bee species are now endangered – and by extension protect the crops that rely on bees for pollination.

The idea is pretty simple: The Oslo Garden Society has placed flowerpots full of bee-friendly plants on roofs and balconies throughout the city, creating a route for bees to travel through without starving. A website shows locals where more flower coverage is needed and encourages them to plant more.

“The idea is to create a route through the city with enough feeding stations for the bumblebees all the way,” Tonje Waaktaar Gamst of the Oslo Garden Society told a local paper in May. “Enough food will also help the bumblebees withstand man-made environmental stress better.”

Agence France-Presse reports that businesses have also joined in, with one accounting firm putting up around $50,000 to cover its terrace in flowering plants and enough beehives to house 45,000 bees.

The decline of the pollinating bee – and the potential causes of that decline, which could include fungi, pests, lack of food and pesticide use – is vigorously debated.

But planting flowers is a fix that’s hard to argue with.