What's all that white fluff drifting around France?

If you've been walking around certain areas of France this week, you may have noticed that the air is filled with drifting balls of white fluff. But what is it?
If you've been walking around certain areas of France this week, you may have noticed that the air is filled with drifting balls of white fluff. But what is it?

The Eastern France Tour, France Vacations

Tree fluff – Twenty Degrees East

What's All that White, Sneezy Fluff Blowing Around Everywhere?

Those white puffs floating in the air this time of year are cottonwood seeds

What's that fluff? Cottonwood pollination season will end soon

Mystery objects falling from the California sky may be spider 'balloons

Tree fluff – Twenty Degrees East

Plankton: Wonders of the Drifting World: Sardet, Christian: 9780226188713: : Books

What's Up With All The White Fluff? Why Cottonwood Trees Are Seeding Like Crazy This Year