Pollinator pathways through Zürich.

75% of Swiss native bee species are threatened. But while the headlines focus on the collapse, a quieter story is unfolding from one balcony at a time: a growing network of urban pollinator corridors stitching cities back into habitats. Here's the 12-step path your window box can join.

The number behind the headline

Switzerland is home to roughly 615 species of native bees. Most people think of "bees" and picture Apis mellifera — the honeybee. But that's one species. The other 614 are wild, mostly solitary, mostly small, and many are critical pollinators of specific Alpine flora.

According to BirdLife Schweiz's 2023 review, drawing on the Federal Office for the Environment's Red List, about 45% are threatened (vulnerable, endangered, or critically endangered). If you add "near-threatened," the figure rises to roughly 60–75% depending on how you count.^[1]

The reasons are familiar: pesticides, monocultures, habitat fragmentation, climate shift. The reasons are also Swiss-specific: the disappearance of mosaic farming landscapes, the dominance of certain ornamental flora that's nectar-poor, and a 95% reduction in flower-rich meadows since 1900.^[2]

Why cities can actually help

Counterintuitive but true: urban environments can outperform agricultural areas for pollinator diversity — when designed deliberately. A 2022 study across European cities found bee species richness was 20–40% higher in mixed urban green than in surrounding agricultural land.^[3]

The reason: cities can have continuous flowering from March to October if planted right, while monoculture farms have weeks of intense bloom followed by months of nothing. Cities have chemical-free patches (private balconies, sympathetic municipal areas). Cities have microclimates — south-facing walls that warm earlier than open land.

The catch is that almost no city is designed this way yet. Most urban green is decorative monoculture (one species of geranium, mowed grass, identical begonia-filled planters). Building pollinator pathways means re-thinking what "green" means.

"The bees don't need a hectare. They need a corridor — a chain of small flowering patches every 50 meters. Cities can do that. Farms can't."

The 12-step pathway · what works

Drawn from pro biene's "Bienenfreundlicher Garten" framework + the Swiss Mission B initiative + Bee Friendly certification, this is the evidence-backed sequence for turning any space — from a windowsill to a corporate roof — into a working node in the pollinator network.

What the 1% funds

This quarter, PETVITY's 1% pledge supports pro biene — a Swiss NGO running pollinator-pathway certification and the "Bienenfreundlicher Garten" rollout across 240 Swiss municipalities. Members can request a free pathway assessment for their property or apartment block, plus a Mission B starter pack of seeds matched to the local elevation and microclimate.

The work is unglamorous and the science is precise: each new certified pathway adds measurable corridor capacity. The cumulative effect, across thousands of small gardens, is bigger than any single nature reserve could be.

The honest part

This article focuses on practical action. We've left out the bigger conversations on industrial agriculture, glyphosate, and the regulatory politics — not because they don't matter (they matter most), but because pollinator pathways are the layer regular humans can actually move on this month. The systemic work is for slower, longer organizing. Both layers are needed.

"You won't save the bees with a window box. But you might save the species that lives in your specific 50 meters — and 50 meters is what every individual gets to influence."