New Zealand flatworm
The New Zealand flatworm is an invasive species that can harm gardens and agriculture. It feeds on earthworms, which weakens soil structure and makes ecosystems less resilient.
Why is it a problem?
- It eats earthworms, which are essential for healthy soil.
- It damages soil structure and nutrient cycling.
- It spreads quickly through plants, soil, and plant pots.
How to recognise the New Zealand flatworm
Appearance: Flat, slimy body in brown or grey with a lighter edge.
Size: 5–15 cm.
Behaviour: Shiny in the light and most active in the evening or in damp conditions.
What can you do?
- Check plants – Remove plants from their pots and inspect the soil.
- Quarantine – Keep new plants separate for at least one week.
- Report sightings – Take a photo and report it at invasivaarter.nu.
- Humane removal – Freeze the flatworm for 24 hours or pour boiling water over it.
- Inform the store – Tell the retailer if you find this species in plants you purchased.
Quick action is important to protect our soils.
Please note that all forms, digital applications (e-services) and some linked websites are currently in Swedish. Contact Citizen Service if you need help in English.
contact
Citizen Service
Email: kommunen@boden.se
Phone: +46 921 620 00