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LockStar 500g

£187.20 inc VAT £156.00 ex VAT
QTYPrice per itemSaving
1 - 3 £187.20 £156.00
4+ £180.00 £150.00 4%
  • 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).
May be sold as an alternative brand

Full Description

LockStar is a 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.

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.

Technical Specification

ProductLockStar 500g
Period Of UseSpring
Pack Size500g
Active Ingredient360g/kg diflufenican, 10g/kg iodosulfuron
Application MethodKnapsack, Boom Sprayer
Knapsack Sprayer Rate12.5g in 10L of water covers 500m²
MAPP No.19101
LERAP CategoryCrop over 5m - see authourisation for details
Boom Sprayer Rate500g per Hectare
Pack Size Coverage10,000m² or 1 Hectare
Treats (Pest / Weed / Disease)Clover, Dandelion, Meadow Grass, Ribwort Plantain, Speedwell
Product LabelDownload


By law, everyone who uses pesticides professionally must have received adequate training in using pesticides safely and be skilled in the job they are carrying out. Upon purchasing this product you and/or the end users are responsibile for ensuring that these products are used in line with industry Approved Codes of Practice. All operators must be trained and certificated in using and applying any Ministry Approved Professional Product (MAPP). Use plant protection products safely. Always read the label and product information before use. Please be aware that by proceeding you are purchasing a professional pesticide product. You must ensure the end user of these products complies with the DEFRA/HSE Code for the Safe use of Pesticides. There are legal responsibilities covering the storage and use of professional use pesticides. These responsibilities are covered by The Food and Environment Protection Act 1985 (FEPA) and Control of Pesticide Regulations 1986 (COPR).
£187.20 inc VAT £156.00 ex VAT
QTYPrice per itemSaving
1 - 3 £187.20 £156.00
4+ £180.00 £150.00 4%
Click & CollectClick & Collect Available within a few days.
DeliveryAvailable for Delivery within a few days.
DeliveryAvailable in a few days.
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