Steinernema feltiae - against Fungus Gnats & Thrips

Steinernema feltiae – Nematodes for Fungus Gnat Larvae and Soil-Dwelling Thrips Stages

If fungus gnats keep coming back, the real issue is usually below the surface. These beneficial nematodes are meant for that zone. They are applied with water and work in damp substrate, where they help reduce larvae before they emerge as another wave of adults.

What they are best for

• Fungus gnat larvae: the main use case in houseplants.
• Soil-dwelling thrips stages: useful in situations where part of the thrips life cycle drops into the substrate.
• Recurrence control: especially helpful when adult insects keep returning after traps alone.

How to apply them

• Mix the powder with lukewarm water according to the selected pack size.
• Drench the substrate rather than spraying the leaves.
• Apply in lower light or in the evening.
• Keep the substrate evenly moist for about 14 days afterwards.

Pack guide

• 2.5 million: about 5 plants
• 5 million: about 10 plants
• 10 million: about 20 plants
• 25 million: about 50 plants
• 50 million: about 100 plants

Storage

• Use as soon as possible after arrival.
• If needed, keep unopened packs refrigerated at 4–8 °C for up to 7 days.
• Once mixed with water, use the solution immediately.