Skip to product information
Thistlex Pro – Selective Weed Killer Targeting Thistles in Grassland (5L)

Thistlex Pro – Selective Weed Killer Targeting Thistles in Grassland (5L)

£145.80 Inc VAT
SKU: 4830
  • Selective control of broad‑leaved weeds
  • Safe for use on grass paddocks
  • Professional‑grade formulation
  • Supports healthier pasture
Safe Use Notice

Thistlex Pro weed killer is designed for fast, effective control of creeping and spear thistles in established grassland. Ideal for targeted pastur...

Availability: Out of Stock
See similar products available
Maestro Mastercard Paypal Visa

Order by 1pm weekday for delivery in 3-5 business days

Please log in to start unlocking discounts
Product Detail

Thistlex Pro Grassland Herbicide is a new-generation selective herbicide designed for use on established grassland. It provides rapid, effective control of creeping and spear thistles while also delivering excellent activity against a range of common broad-leaved weeds, including buttercups, dandelions, cow parsley and hogweed.

Containing clopyralid and halauxifen-methyl, Thistlex Pro moves throughout the plant and into the root system to help provide long-lasting control of both perennial and annual weeds. Its fast-acting formulation is rainfast in just four hours, offers excellent crop safety when used in accordance with the product label, and helps maintain productive, weed-free grazing and forage ground. Available in a 5-litre pack, each container treats approximately 3 hectares.

Key Benefits:

  • Powerful control of creeping thistle and spear thistle.
  • Moves throughout the plant and into the root system for long-lasting control.
  • Excellent control of buttercup species, including flowering plants.
  • Effective against a range of broad-leaved weeds including dandelion, cow parsley and hogweed.
  • Rainfast in just 4 hours.
  • Excellent crop safety on established grassland when used in accordance with the product label.
  • Grazing can typically resume 14 days after treatment (always refer to the product label for full guidance).
  • Helps maintain productive, weed-free grazing and forage ground.
  • 5-litre pack treats approximately 3 hectares.
* Always follow the Usage guide and Aftercare advice

Active Ingredient: 120 g/litre clopyralid and 5 g/litre halauxifen-methyl (Arylex™) (HRAC Group 4 Herbicides)

MAPP No. 21489

1.67L/ha in 200–400L/ha of water.

  • Apply to healthy, actively growing weeds for the best results.
  • Treat thistles when they are actively growing and approximately 150–300mm in diameter.
  • Where thistles have reached the flowering stage, top or cut first and spray regrowth once it reaches 150–300mm to achieve the best root kill.
  • Suitable for use on established grassland over 12 months old.
  • Apply between 1st March and 31st July, following label recommendations.
  • Must be applied using approved 3-star drift reduction technology.

After applying Thistlex Pro – Selective Weed Killer Targeting Thistles in Grassland, avoid disturbing the treated area to allow the product to work effectively. Monitor the site over the next few weeks and only re‑treat if fresh growth appears. Rinse application equipment thoroughly with a suitable tank cleaner and dispose of washings safely on treated ground. Keep pets and people away from the area until foliage has dried.

Orders placed by 1pm Monday to Friday are typically delivered within 3 to 5 working days (express delivery 1 to 2 days).

Mainland UK orders up to 15kg

  • FREE delivery on orders over £50
  • Orders under £50: £6.99
  • Express delivery: £10.99

Orders over 15kg

  • Delivery is calculated by weight and postcode and starts from £10.99
  • Express delivery is available on heavier orders for an additional charge

Click & Collect

FREE same day Click & Collect is available on the majority of our products from our Peterborough head office. Simply call our team on 0330 165 5568 to order and arrange collection.

For full delivery charges, pallet deliveries and delivery regions, view our delivery page.

What weeds does Thistlex Pro control?
Thistlex Pro is primarily used to control creeping thistle and spear thistle in established grassland. It also provides excellent control of buttercups and controls a range of broad-leaved weeds including dandelion, cow parsley and hogweed.
When is the best time to apply Thistlex Pro?
For optimum results, apply to healthy, actively growing weeds. Thistles should ideally be treated when they are between 150mm and 300mm across.
Can livestock graze treated grassland?
Yes, grazing can normally resume 14 days after treatment. Always check the product label before use and follow any restrictions that apply.
Do I need protective equipment when using Thistlex Pro Weed Killer?
Always wear appropriate personal protective equipment when handling and applying Thistlex Pro Weed Killer.
Thistlex Pro – Selective Weed Killer Targeting Thistles in Grassland (5L)