loads of pots planted. how best to water in?

I've always found that a watering can (10 litre I think) with a coarse rose is best. It needs to be a coarse rose (larger holes) else the holes will block up with the carrier from the nematodes. I mix the entire solution up in a bucket first (as per the instructions on the pack), then fill up the watering can and start watering the pots.

can it be used later than november

Temperature and humidity are important to the success of these biological controls. Nematodes travel by slithering around the soil particles so the soil needs to be kept moist. If it is hot and dry they will either shrivel and die or hide away deep underground. (On the other hand they don't survive very waterlogged ground - they will actually drown within about 2 hours if placed in water). Likewise if the soil is freezing the nematodes will perish. Most beneficial nematodes will not survive a British winter outside and will need to be reapplied each year. (quote from: https://ladybirdplantcare.co.uk/nematodes.htm)

Where is it posted from

If you read the Amazon details you can find: Gardening Naturally Cirencester Road Chalford Stroud GL6 8PE They are the producers / suppliers of this product - it’s likely the product wa sent from their premises or a Amazon Warehouse.

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Nemasys vine weevil killer 12sq m - same-day despatch for Insects

Nemasys vine weevil killer 12sq m - same-day despatch for Insects

Product ID: 49537767

Details

Brand
Nemasys
Item form
Powder
Liquid volume
2 Litres
Specification met
USDA
Target species
Insects

🌱Natural nematode biocontrol

❄️Fridge-stable for 2 weeks

🛡️Safe for kids, pets & wildlife

€ 35.34

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Outsmart vine weevils naturally—because your plants deserve VIP protection!

GENEROUS COVERAGE - Treats up to 12 sqm or 75 x 2L pots per pack—perfect for serious plant parents and garden pros alike.
SEASONAL FLEXIBILITY - Effective anytime indoors and outdoors when soil temps are above 5°C (March to October)—year-round peace of mind.
EASY TO USE READY MIX - Just mix the powder with water and apply with a watering can or hose-end feeder—no complicated setup required.
PREEMPTIVE PEST DEFENSE - Kills vine weevil grubs before they damage your plants—no more waiting for visible damage!
VERSATILE SAFE APPLICATION - Use indoors, outdoors, on edible crops, and delicate pot plants without worry—totally pet and child friendly.

Nemasys Vine Weevil Killer harnesses living nematodes to naturally eliminate vine weevil grubs before they harm your plants. Safe for use on pot plants, edible crops, and anywhere in your garden, it’s a pet- and child-friendly solution that works indoors year-round and outdoors when soil temperatures exceed 5°C. Easy to apply and fridge-stable for two weeks, each pack treats up to 12 square meters or 75 pots, making it the smart choice for millennial gardeners who demand effective, eco-conscious pest control.

Specifications

ASIN	B007RK7MR0
Best Sellers Rank	3,267 in Garden ( See Top 100 in Garden ) 99 in Indoor Multi-Insect Control
Brand Name	Nemasys
Country of Origin	United Kingdom
Customer Reviews	4.3 4.3 out of 5 stars (2,621)
Item Form	Powder
Liquid Volume	2 Litres
Specification Met	USDA
Target Species	Insects

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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€ 35.34

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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