Long Life Leatherjacket Nematodes 20sq.m (280g)

Long life leatherjacket nematodes are slow release pearls that release beneficial nematodes into moist soil to target leatherjacket larvae and reduce root feeding in lawns and planted areas. They help manage leatherjacket larvae in the soil that can weaken grass and young plants below the surface.

Suitable for gardeners, allotment growers and households looking to treat lawns, beds and growing areas where leatherjackets are active.

What long life leatherjacket nematodes do in the soil

Each pearl contains thousands of beneficial nematodes held inside a hydrogel capsule. After watering, the pearls break down gradually and release nematodes into the soil where leatherjacket larvae are present.

This slow release format helps spread activity through the treated area and supports coverage across damp soil.

Where to use leatherjacket nematodes around the garden

Apply these nematode pearls to moist soil in lawns, borders, beds and other outdoor growing spaces where leatherjackets may be feeding below the surface. They are suited to areas where root damage is reducing plant strength or lawn growth.

Good soil contact and even coverage across the area help the nematodes move into the root zone after watering.

How often to reapply long life leatherjacket nematodes

 Another application in the spring may be necessary if you still see lawn damage. The benefit of the long life format is that you can buy in advance and store the product until you are ready to apply, giving you more flexibility over your treatment schedule.

When to apply long life leatherjacket nematodes for best soil conditions

Apply in the evening or during overcast or rainy weather. The minimum soil temperature should be 5°C before use.

After treatment, keep the soil moist for three to four weeks and do not allow it to dry out, as moisture is needed for movement through the soil. Best applied August to October.

How to apply long life leatherjacket nematodes with no mixing required

No mixing is required. Apply at approximately 15g, around one and a half teaspoons, per square metre. Sprinkle evenly over moist soil to achieve good coverage, then water in thoroughly after application.

The pack can be used in stages if required, making it suitable for treating selected areas over time. No need for refrigeration.

Benefits of long life leatherjacket nematodes for lawn and soil pest control

• Long life refers to long shelf life so can be used in stages if required
• Slow release pearl format for gradual release into soil
• No mixing required before application
• Treats up to 20m² per pack
• Suitable for lawns, beds and growing areas with moist soil

Specifications for long life leatherjacket nematodes 20m² pack

• Product type: Long life leatherjacket nematodes
• Format: Slow release pearls
• Coverage: Treats up to 20m²
• Pack size: Approx. 280g
• Application rate: Approx. 15g per square metre
• Minimum soil temperature: 5°C
• Moisture requirement: Keep soil moist for 3 to 4 weeks
• Storage: Store in the original breathable packaging in a cool place
• Long shelf life: The expiry date on the pack tells you how long the product can be stored before use (current batch 03/08/2026)

Frequently Asked Questions

Why are they called "long life"?

The name refers to the extended shelf life of the product. Standard nematodes must be used almost immediately after purchase, while long life nematodes can be stored and used flexibly any time before the expiry date. This makes them ideal if you want to buy ahead of time or apply in stages. Once applied, they work in the same way as standard nematodes. Another application in the spring may be necessary if you still see lawn damage.

Do I still need to reapply?

Another application in the spring may be necessary if you still see lawn damage. The long life format gives you more flexibility over when you apply, but each application works in the same way as a standard nematode treatment.

Can long life leatherjacket nematodes be applied in more than one session?

Yes, the pack can be used in stages if required, provided it is stored correctly in the original breathable packaging and used before the expiry date on the pack.

Why do long life leatherjacket nematodes need moist soil?

Moisture allows the nematodes to move through the soil after the pearls break down. Dry soil can reduce movement through the treated area.

Do long life leatherjacket nematodes need mixing with water first?

No, these are ready to apply pearls. Sprinkle them evenly over moist soil and water in thoroughly after application.

What is the pack size and coverage for long life nematodes?

This pack weighs approximately 280g and treats up to 20m². Apply at around 15g per square metre for even coverage.

How should long life leatherjacket nematodes be stored before use?

Store them in the original breathable packaging in a cool place. Do not transfer them to an airtight container and keep them away from direct sunlight and heat.