Nemasys Leatherjacket Nematodes are a natural biological treatment for lawns damaged by leatherjackets, the root-feeding larvae of crane flies, often known as daddy long legs. This 100 square metre pack is designed to help reduce leatherjacket activity in the soil and support healthier grass growth.
What are leatherjackets?
Leatherjackets are grey-brown, legless larvae that feed on grass roots below the soil surface. Affected lawns may show thinning grass, yellow patches and weak turf that lifts easily. Birds may also peck at the lawn as they search for the larvae.
How Nemasys Leatherjacket Nematodes work
Nemasys Leatherjacket Nematodes contain beneficial nematodes that are applied with water to moist soil. Once watered in, they move through the soil and help control leatherjackets naturally, reducing further root damage.
When to apply
For best results, apply from late August to October, when crane fly eggs have hatched and young leatherjackets are active near the soil surface. A spring treatment may also help if lawn damage continues after winter.
- Best applied from late August to October
- Can also be used in spring if needed
- Apply to moist soil
- Soil temperature should be above 5°C
- Keep the lawn damp after application
How to use
- Water the lawn before treatment if the soil is dry.
- Mix the nematodes with water following the instructions.
- Apply evenly using a watering can or suitable applicator.
- Water again after application.
- Keep the soil moist for at least 7 days.
Safe biological lawn treatment
This is a live biological treatment and can be used on lawns accessed by pets, children and wildlife when used as directed. There is no need to keep anyone off the treated area after application.
Storage and shelf life
Store in the fridge on arrival. Nematodes are a live product and typically have a shelf life of around two weeks from dispatch. Use before the expiry date. Due to their perishable nature, nematodes are non-returnable.
If these are not available we have another option?
You can also view our Gardening Naturally Leatherjacket Nematodes 100 sq.m.
Frequently Asked Questions
What area does this pack treat?
This pack treats up to 100 square metres of lawn.
When is the best time to apply Nemasys Leatherjacket Nematodes?
The main application period is late August to October, when young larvae are active near the soil surface. Spring application may also be helpful where leatherjacket damage continues.
What are the signs of leatherjackets in a lawn?
Typical signs include yellowing grass, thinning turf, bird pecking and grass that lifts easily because the roots have been eaten.
Are Nemasys Leatherjacket Nematodes safe around pets and children?
Yes, they are a biological lawn treatment suitable for family gardens when used as directed.
