Spanish Slugs Invade Russian Gardens: Best Ways to Protect Your Crops

The Spanish slug, also known as the Lusitanian slug or red slug, has become one of the most destructive invasive pests in Russian gardens and agricultural areas. Originally native to the Iberian Peninsula, the species has rapidly spread across Europe and now threatens crops in regions including the Moscow area. Gardeners report growing infestations as the pests attack vegetables, berries, flowers, weeds, and even decaying organic matter. Experts warn that Spanish slugs reproduce aggressively and adapt well to Russia’s climate due to their resistance to moisture and cold temperatures. Why Spanish Slugs Have Become a Serious Threat Spanish slugs can grow up to 15 centimeters long and usually display reddish-brown or brick-colored bodies with pale undersides. Unlike many local species, they face almost no natural predators in newly colonized regions, allowing populations to explode unchecked.