Slug Killer Nematodes - Phasmarhabditis hermaphrodita

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Dragonfli Slug Killer Nematodes is a biological molluscicide containing invective juveniles of Phasmarhabditis hermaphrodita. Phasmarhabditis hermaphrodita are minute worm-like nematodes that are approximately between 0.3 - 0.5 mm long and are transparent in appearance. They occur naturally in soils in areas prone with molluscs and are very active when observed under microscope. Dragonfli nematodes are easy to apply using a watering can and do not leave any unsightly residues. Each application of nematodes will provide at least six weeks control of slugs. This is generally enough time for seedlings and bedding plants to get well established. The majority of the slugs will die underground, so don't expect to see dead slugs lying around. Apply your nematodes to moist soil. The soil temperature should be 5ºC or over (this is also when plants start to grow). Nematodes are capable of surviving the odd frost; so don't worry if the temperature falls after you have applied.  

Recognising slug damage:

  • Look for irregular holes with smooth edges on leaves.
  • Nearby will be evidence of their slime trials. They are particularly fond of succulent seedlings, which when left unprotected, can be totally destroyed in a single night.
  • As well as attacking the leafy parts of plants, slugs will also feast on your fruit and vegetable crop. Slugs will chew holes in your ripening strawberries and tomatoes.
  • If your seeds do not seem to have germinated, it is possible that slugs have devoured the emerging seedlings underground.
  • Slugs love potatoes, which are of course grown underground, so you cannot see them being attacked