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Gooseberry Sawfly Killer Nematodes


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*Orders will be shipped out as the weather becomes suitable for effective application from mid to late April*

What Are Gooseberry Sawflies?

Gooseberry Sawfly will lay eggs that develop into larvae and it is these Gooseberry Sawfly larvae that cause most damage to Gooseberry plants. There are three common species of Gooseberry Sawfly larvae that can attack Gooseberry bushes, and such larvae will also attack Red and White Currants. The larvae will shred and defoliate leaves, and are capable of leaving severe damage if left untreated. The larvae look similar to caterpillars in size and shape, and are of green colouring with black dots. 

What Are Gooseberry Sawfly Killer Nematodes & How Can They Help?

Gooseberry Sawfly larvae can be controlled safely and naturally with our Gooseberry Sawfly Killer Nematodes which are deadly to Sawfly larvae but safe to humans, pets and wildlife. Gooseberry Sawfly Killer contains Steinernema carpocapsae nematodes. The nematodes will enter the Sawfly Larvae via a natural opening, such as the mouth, and feed on the inner contents of the larvae. A natural bacterium is produced by the nematodes whilst inside the larvae, which kills the pest. Infected larvae will be completely broken down by the nematodes. The nematodes also reproduce inside the larvae, releasing more nematodes into the surrounding area.

When Should I Apply The Nematodes?

Apply your Gooseberry Sawfly Killer Nematodes when damage to plants is observed or as soon as Gooseberry Sawfly have been observed. The optimum period to apply is from April to October.

How Many Nematodes Do I Need?

The Gooseberry Sawfly Killer Nematodes are supplied as either:

- 1 x 25 Million nematodes to treat up to 35m2 of Gooseberry bushes.

- 2 x 25 million nematodes to treat up to 70m2 of Gooseberry bushes.

What Conditions Do The Nematodes Require?

Choose a humid or wet day to apply your Gooseberry Sawfly Killer Nematodes. Nematodes are UV-sensitive and will not survive long when exposed to bright, sunny conditions. Apply the nematodes early in the morning or early in the evening in order to utilise the optimum humidity levels. Avoid application in frosty conditions.

How Do I Apply The Nematodes?

1. First open and empty the contents of your 25 million sachet of nematodes into a bucket or container of 2.5 litres of water and mix thoroughly.

2. Next, fill your sprayer (hand held sprayers should suffice, with filters removed, or use our Nema Super Sprayer for optimum nematode application) with the mixed 2.5 litres of nematode concentrate and add another 5.5 litres of water so you are left with 8 litres of nematode solution.

3. Finally, spray your plants and ensure plenty of the spray solution is applied and directed where possible directly onto the Gooseberry Sawfly larvae.

Repeat applications may be required for severe applications.

Full instructions are provided on delivery. 

Can I Store Nematodes?

You can store unopened nematode packs in a fridge but it is best to ensure you apply your nematodes as soon as possible for the best results.

Gooseberry Sawfly Killer Nematodes are harmless to humans, pets and wildlife, and safe to apply to edible plants.

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Kath and Rob Connolly
Absolutely brilliant! Works on lots of other plants too!

We didn't have high hopes as we saw our beloved berberis rosy glow shrub being devastated but the caterpillars disappeared and the leaves grew back! We've also had great success with ladybird larvae (different company) against aphids and are now huge fans of natural predators as pest control! We'll be trying some against box tree moth next spring and hope to save our hedge!

Well done Dragonfli!