Potatoes are frequently badly damaged by slugs later in the season. As the potato haulms die back, the slugs tend to migrate from above the soil to beneath it, whereupon they start to attack the tubers themselves.

Historically commercial potato growers have used metaldehyde based slug pellets, similar to the ones available to gardeners. As these pellets are applied to the surface they are only effective on slugs that emerge above ground. Both commercial and domestic potato growers alike are starting to switch to nemaslug to protect their crops. As the nematodes contained in nemaslug penetrate the soil, they kills slugs underground as well as those above. In fact nemaslug is so effective at penetrating the soil that almost all of the slugs it kills will die underground. For gardeners this is a great bonus as it means that there will be no mess as a result of slugs being killed on the surface.

Nemaslug can be applied to the potato crop at anytime, but it is best to apply it directly to the soil before the haulm starts to die back. Repeat applications every six weeks until mid autumn to ensure your potatoes remain slug free until they are harvested.