The Met Office has issued a warning about pollen ... grains of pollen in one cubic metre. Alongside grass pollen, there is tree pollen and weed pollen and these categories contain roughly 30 types ...

Cross-pollination: The pollen grain lands on a different flower to the one it originated from. As plants cannot move like animals they must adopt a different method of transferring these pollen ...

It's certainly not the warmer temperatures, but the seasonal allergies they suffer through when all the trees and plants explode, sending massive amounts of pollen grains into the air. It might ...