Experts are urging UK gardeners to be vigilant about the invasive Spanish bluebell, which is spreading rapidly and threatening the native English bluebell. Originally introduced as an ornamental plant, the Spanish bluebell grows more quickly and produces more seeds, allowing it to dominate and hybridize with native species. Chris Bonnett, a plant expert, emphasizes that gardeners play a crucial role in protecting native bluebells, as even a single population can establish itself in surrounding areas within a few years. The two species can be distinguished by their physical traits: Spanish bluebells grow upright with flowers along the entire stem, while native bluebells arch gracefully and emit a sweet fragrance. Although not listed as invasive in England and Wales, Spanish bluebells are considered invasive in Northern Ireland and the Republic of Ireland. Gardeners are advised to responsibly remove these plants by digging out the entire bulb and disposing of it in household waste to prevent further spread.