If you find pink eggs in your garden, you should act quickly. The distribution of the genus Pomacea is prohibited within the EU.
Apple snails are popular with aquarium owners as algae-eating cleaning crews. Accidental importation via eggs on aquarium and pond plants is also possible. It may currently be too cold for the animals to spread massively here, but climate change could soon make it possible, just as with the Nosferatu spider or the Asian hornet. You can find even more exciting garden topics in the regular newsletter from our partner 24garten.