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Agrigem Specialist Amenity Products and Services

LockStar 500g

LockStar 500g
£175.20 Inc VAT £146.00 EX VAT
  • Buy 4 for £142.00 (£170.40 incl. tax) each and save 3%

Availability: In stock

NEW Residual Pre-Emergent Weed Control

Delivery Costs Calculated At Checkout
Click & Collect available

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Key Information

Additional Information

Active Ingredient360g/kg diflufenican, 10g/kg iodosulfuron
MAPP NO19101
LERAP CategoryCrop over 5m - see authourisation for details
Pack Size500g
Pack Size Coverage10,000m2 or 1 Hectare
Knapsack Sprayer Rate12.5g in 10L of water covers 500m2
Boom Sprayer Rate500g per Hectare
Application Method(s)Boom Sprayer, Knapsack
Treats (Pest/Weed/Disease)Clover, Dandelion, Meadow Grass, Ribwort Plantain, Speedwell
Period Of UseFebruary, March, April, May, June
Product LabelDownload


LockStar is a NEW residual, pre-emergent total herbicide for use on amenity and landscape areas. Using a new & innovative active ingredient, iodosulfuron, LockStar is an excellent residual herbicide that offers effective control over many species of weeds, such as dandelion, white clover, ribwort plantain & black nightshade. When applied prior to germination, LockStar can keep treated surfaces weed-free for up to 4 months. To control weeds that are already present, LockStar can be tank mixed with glyphosate or fatty acid.

LockStar helps to keep areas such as public places and landscapes weed-free and pleasing to the eye through safe and long-lasting results.

LockStar is an excellent product for resistance management as it contains two innovative active ingredients with different modes of action. A product containing two active ingredients with differing modes of action allows increased longevity compared to products with only one mode of action. LockStar is a granule that is dispersible in water.


Key Benefits:

- Controls a broad spectrum of weeds.

- Has a residual effect for up to 4 months.

- Contains the innovative active ingredient, iodosulfuron, which is the first new weed control active ingredient to be released in the UK for several years.

- Water dispersible granule.

- Can be used on natural surfaces not intended to bear vegetation, on permeable surfaces overlying soil and on hard surfaces (railway ballast only).


Our Recommendation:

- Always read the product label before use.

- LockStar is best applied before weeds emerge. Apply a single application per season between February and June.

- Mix with glyphosate or fatty acids for post-emergence control.

- For an excellent glyphosate herbicide, take a look at Roundup Pro Vantage 480 5L.

- Save money and time and mix with Blue Dye to ensure no areas are missed or overdosed.

- Always wear protective clothing, such as Chemical Resistant Gloves, when handling LockStar.

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How much LockStar 500g will you need?

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Calculator Disclaimer This is guide only, For crop specific rates please check the product label.