Potato rot nematode

The Potato rot nematode survives on many host plants.

recognize Potato rot nematode on potatoes
Potato affected by potato rot nematode, photo: Bonsak Hammeraas, NIBIO - CC BY-SA 3.0

Potato rot nematode (Ditylenchus destructor) The nematode survives on many host plants, such as clover, iris, dahlia and gladiolus. Hardly spotted on potatoes anymore, but it is on gladioli and dahlias: light brown spots on shriveled skin.

Where to find

  • Potato
  • Clover
  • Lis
  • Gladiolus
  • Tulip


Remove infested plants. Do not put a plant of the same family in the vacant spot (infested soil!).


Because nematodes survive on weeds, weed control is necessary. Crop rotation with gladiolus and dahlias helps prevent damage from Potato rot nematodes.