Description
Long life leatherjacket nematodes are supplied as slow-release pearls designed to introduce beneficial nematodes into damp soil. These nematodes work below the surface to target leatherjacket larvae, helping reduce feeding on grass roots and improving lawn condition over time.
Suitable for use in domestic gardens, allotments, and landscaped areas where leatherjackets are known to affect lawns, beds, and planting zones.
How leatherjacket nematodes act in the soil
Each pearl contains a large number of microscopic nematodes enclosed within a gel-based coating. Once watered, the coating softens and gradually breaks apart, releasing the nematodes into the surrounding soil where they come into contact with larvae.
The gradual release supports wider distribution across moist soil, helping reach pests throughout the treated area.
Where to apply leatherjacket nematodes
Apply to damp soil in lawns, borders, and planting areas where leatherjacket activity is suspected. They are particularly useful where root damage is causing thinning grass or weakened plant growth.
Even application and proper watering help move the nematodes into the soil profile where larvae are active.
Reapplication guidance
If lawn damage continues, a follow-up treatment in spring may be beneficial. The extended shelf life allows you to store unused product and apply when needed, offering flexibility across the treatment period.
Best time and conditions for use
Apply during cooler conditions such as evening or when weather is cloudy or damp. Soil temperature should be at least 5°C before application.
After applying, maintain soil moisture for three to four weeks to support movement through the soil. The ideal treatment window is typically between August and October.
Application method
These pearls are ready to use with no preparation required. Apply approximately 15g per square metre (around one and a half teaspoons), distributing evenly across moist soil. Water thoroughly after application.
The product can be used in portions, making it suitable for treating specific areas or applying over time. Refrigeration is not required.
Key features
- Extended shelf life allows staged use
- Slow-release pearl format for gradual distribution
- No mixing or preparation needed
- Covers up to 20m² per pack
- Suitable for lawns and outdoor growing areas
Product specifications
- Type: Leatherjacket nematodes
- Format: Slow-release pearls
- Coverage: Up to 20m²
- Pack weight: Approx. 280g
- Application rate: Approx. 15g per m²
- Minimum soil temperature: 5°C
- Moisture requirement: Maintain moisture for 3 to 4 weeks
- Storage: Keep in original breathable packaging in a cool place
- Shelf life: See pack for expiry date (current batch 03/08/2026)
Frequently Asked Questions
What does “long life” refer to?
It describes the extended storage period. Unlike standard nematodes that need to be used quickly, this format can be stored and applied when needed before the expiry date.
Is repeat treatment required?
A further application may be useful if damage persists, particularly in spring. Each treatment works in the same way as a standard nematode application.
Can the product be used in stages?
Yes, you can apply part of the pack and store the rest, as long as it remains in the original packaging and is used before the expiry date.
Why is moisture important?
Damp soil allows the nematodes to move effectively after release. Dry conditions can limit their ability to spread through the soil.
Do these need mixing before use?
No, they are applied directly. Simply spread over moist soil and water in well.
What area does one pack cover?
This pack treats approximately 20m² when applied at the recommended rate of 15g per square metre.
How should the product be stored?
Store in a cool place in the original breathable packaging, away from heat and direct sunlight. Avoid sealing in airtight containers.