Redroot Pigweed Amaranth

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Redroot is a common weed in gardens, roadsides, agriculture and waste areas. Also known as Pigweed or Amaranth.

Identify the problem
Redroot grows up to 1 metre tall but is often low growing and spreading. The stems have a reddish colour when mature.
How to solve the problem
In garden beds
- To control redroot seedlings in garden beds, spot treat with Weed Weapon Extra Strength, Weed Weapon Rapid Action or Weed Weapon Natural Power. Weed Weapon Extra Strength is systemic and kills weeds down to the roots within 2-4 days and is an ideal product for use around established trees and shrubs. It is inactive in the soil so planting can be safely carried out soon after treatment. Weed Weapon Natural Power will burn down young weeds within hours and is certified organic by BioGro.
- To control larger mature redrot spray the whole plant with Weed Weapon Extra Strength concentrate with Dye & Stick.
- For best results apply spray in Spring and Autumn when weeds are growing. Control before flowering and seeding to prevent similar problems the following year.
In paths and driveways
- For long term control on paths and driveways use Weed Weapon Long Term. This will kill a wide range of weeds and prevent regrowth for up to 12 months.
- For best results apply spray in Spring and Autumn when weeds are growing.
In lawns
- Apply a selective herbicide such as LawnPro Turfclean Ultra, LawnPro Prickle and Hydrocotyleor LawnPro Turfclean. They will effectively kill clover but leave the lawn grass unaffected.
- Other options include LawnPro Turfclean & Green and All-in-1.
- For best results apply spray in Spring and Autumn when weeds are growing.
Did you know?
- Redroot is Amaranthus powellii