Heterohabditis downesi

Hd nematodes are microscopic, indigenous, naturally occurring nematodes of the species Heterorhabditis downesi (Hd).
They are insect pathogens (pathogen=disease-causing), specializing in certain pests, and are used as beneficial insects in biological pest management.

Hd nematodes are more cold-resistant than Hb-nematodes and can therefore be used at lower soil temperatures. While Hb nematodes require a soil temperature of at least 12°C, Hd nematodes can already be used at 8°C soil temperature.

Against which pests can Hd nematodes be used?

  • weevil larvae (Otiorhynchus spp.) including spruce weevils (Hylobius abietis)
  • grubs of welsh chafer (Hoplia philanthus), cockchafer beetles (Melolontha melolontha)


Good to know.

Against many other pests our Sf-nematodes, Hb-nematodes or
Sc-nematodes are in use.
Our Hd-nematodes products:


Control weevil larvae and grubs in colder soil temperatures.

Hd-nematodes from e-nema against black vine weevil and white grubs

Do you have questions?

Feel free to contact us personally.