Global warming could spread US ragweed to UK, causing misery for hayfever sufferers

Climate change could help the invasive weed from north America, that triggers severe allergic reactions, become common across the UK by 2050, experts have warned

Climate change could help a notorious invasive weed known to trigger severe allergy attacks gain a foothold in the UK, experts have warned.

Ragweed (Ambrosia artemisiifolia) is native to North America but since the 1960s has spread rapidly across warmer parts of Europe.