Stop Leatherjackets From Destroying Your Lawn!

Leatherjackets (crane fly larvae) feed on grass roots, causing yellow patches, thinning turf, and loose grass that pulls up easily. Protect your lawn with safe, effective nematodes, nature’s solution. Simply add these microscopic worms to the lawn to tackle the issue at its source.

How to Spot Leatherjacket Damage:

• Yellow/brown patches in the grass
• Thinning or dead turf
• Grass lifts easily (weak roots)

Not sure if it’s chafer grubs?

Leatherjackets = Grey/brown, worm-like, no legs.

Chafer grubs = White, C-shaped, orange head & 6 legs.

Click here for Chafer Grub nematodes

How does it work?

Nematodes naturally occur within soil in the UK, but in low numbers. By adding more of these leatherjacket-specific nematodes, you can quickly reduce leatherjacket populations. When they come into contact with a leatherjacket grub, they enter through natural openings and feed and multiply. Within days, the grub will stop eating, and within a week, it will die. The nematodes will multiply and spread out in the soil, seeking more grubs to continue to propagate. Most of this occurs below the surface.

How do I use them?

Nemasys nematodes are supplied as a dry powder which can be mixed with water in a watering can and then applied to the area you want to protect. We advise applying them after spotting the first adult daddy long-legs (usually around August) and again after the spring thaw.

Is it safe?

Nematodes are completely natural and prevalent in most gardens throughout the UK. Nemasys predatory nematodes are simply a more precise and effective version, which will only target the local leatherjacket population. They are designed for use where pets and other wildlife are present,

When is the best time to use Nematodes?

The best time to use these nematodes would be when the soil temperature is reliably above 10°C, and the leatherjacket eggs and grubs are likely to be present in the soil. Typically, this will be late August into October. A second round could be applied after the Spring thaw if you suspect there are still some grubs present in the soil. Don't worry too much if the temperature drops after the nematodes have been applied. While they do best when the soil is above 10°C they can survive the odd frost and will continue to work below the surface.

Application Advice

1. Dissolve the entire contents of the pack in a bucket containing 4L of water to create a solution.
2. Stir vigorously and then take 500ml of the solution and add it to a 5L watering can fitted with a coarse rose and fill with water.
3. Apply this to a 5m² area
4. Repeat steps 2 and 3 until the whole area has been treated

In total, you should go through 8 watering cans (40L of water) and cover a 40m² area. For the larger 100m² pack, simply start with 10L of water for the initial solution and apply with 20 watering cans to a 100m² area.