Professional area | Diseases factsheet | Pests | Nematodes : eelworms


Nematodes : eelworms

Various different nematodes are liable to infest cyclamen (cyst nematodes, root-knot nematodes, lesion nematodes, stem and bulb nematode, &c.).  Of them all, the most to be feared are Heterodera marioni and H. rostochiensis, both cyst nematodes.

It is possible to take precautions by using commercial bagged compost.

There are effective chemical and biological means of control.


  • Introduction
  • Root nematodes
  • Nematodes of the upper plant
  • Management measures
  • Biological control
  • Physical control
  • Chemical control


This advice sheet is based on the methods used at the SCEA at Montourey (Fréjus, France). These procedures may need some modification to adapt them to other climatic situations. Before starting to grow cyclamen there needs to be a review of precautions against pests and diseases.   We must point out that our advice and suggestions are offered for information purposes and therefore cannot include any guarantee of specific results; it is a good idea to carry out trials beforehand.


Pests :

S.A.S Morel Diffusion

2565, rue de Montourey
83600 Fréjus - France

International telephone : +33 (0)4 94 19 73 04
Switchboard : + 33 (0)4 94 19 73 00
Fax : +33 (0)4 94 19 73 19
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