Nematodes for houseplants

Instructions  /  Houseplants

Manual · Houseplants

How to apply nematodes

Applying nematodes is not complicated. The most important thing is that they are spread evenly over moist soil, so they can seek out the larvae of pests in the potting soil themselves.

Soil temperature 10–25 °C First results 1–2 weeks Storage fridge ± 5 °C 🌱 Safe for people, pets & plants
Nematodes for houseplants

Important to know

  • Nematodes need enough water to work
  • Not using right away? Store in the fridge around 5 °C
  • The mixing ratio is not critical — even spreading in moist soil is what counts
  • Treat all plants at once to avoid spreading the pest

Step by step

How to apply the nematodes

1

Calculate the water

Work out how much water your plants need together:

  • Small plant: ± 200 ml
  • Medium plant: ± 300 ml
  • Large plant: ± 400 ml
2

Make the concentrate

  • Dissolve the entire sachet of nematodes in 1 litre of water
  • Add NemaCharge straight away (if available)
  • Stir well and let it stand for 5 minutes
3

Dilute if needed

Few plants (e.g. 5 small ones)? Use the concentrate directly, without diluting. More plants? Calculate the total (number × ml per plant) and top up the concentrate to that volume.

Example10 medium plants × 300 ml = 3 L total. Make 1 L of concentrate, top up with 2 L of water. A 1 L watering can? Three rounds, each ⅓ concentrate + water up to 1 L.
4

Apply

  • Give each plant its normal amount of water
  • Spread the mixture evenly over the whole pot
  • Preferably in the morning or evening
5

Aftercare

  • Keep the soil lightly moist for 10 to 14 days
  • Do not let it dry out, but do not soak it either
  • The nematodes seek out the larvae themselves and do their work
✓

Guideline per plant

Always use the full pack per treatment and only use what you apply that same day.

RememberSmall ± 200 ml · Medium ± 300 ml · Large ± 400 ml. Spread so the entire root zone is reached.

What happens after treatment

The nematodes at work

Day 1

Nematodes spread actively through the moist soil, searching for larvae.

Day 3–4

First results visible — clearly fewer adult flies around the plants.

Day 10–14

The pest is usually fully under control. Keep the soil lightly moist.

Optimal soil temperature

Between 10 °C and 25 °C

Within this range the nematodes are most active. Avoid bright sunlight on the soil and do not use chemical products before, during or after treatment.

Storage advice

Give them a cool spot

Nematodes are living organisms. Keep them in the fridge around 5 °C. That keeps them fresh until you use them — ideally as soon as possible after delivery.

Frequently asked questions

Good to know

Are nematodes safe for pets and children?

Yes. Nematodes are completely natural and harmless to people and animals.

Can I combine nematodes with plant food?

Yes, as long as the food does not contain chemical pesticides.

How quickly will I see results?

Usually within 1 to 2 weeks. With a heavy infestation it may take a little longer. For a persistent pest you can repeat the treatment after a few weeks.

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Nematodes for your houseplants

Tackle fungus gnats and other soil pests at the source — safe, biological and free of poison.

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