1. Dig out (small patches only) (all year round). Dispose of root crowns and rhizomes at a refuse transfer station or burn or bury deeply.
2. Stem scrape and paint with undiluted glyphosate immediately. Small patches only.
3. Cut and paint stumps: glyphosate (200ml/L to 500ml/L). Small patches only.
4. Spray (summer-autumn, before leaves become brittle): metsulfuron-methyl 600g/kg (7.5g/15L) or Tordon Brushkiller (60ml/15L) or triclopyr 600 EC (60ml/15L).
1. Introduce biocontrol agents wherever possible – check with your regional council for more information on this.
2. Stump swab: glyphosate (250ml/L) or metsulfuron-methyl 600g/kg (2g/L) or triclopyr 600 EC (250ml/L) or Tordon Brushkiller (100ml/L) or Vigilant gel.
3. Spray (spring-summer): triclopyr 600 EC (20ml/10L) or triclopyr 300 EC (40ml/10L).
4. Spray (autumn-winter): metsulfuron-methyl 600g/kg (5g/10L+ penetrant – knapsack) or (20g/100L + penetrant – spraygun) or Tordon Brushkiller (250ml/100L spraygun).
5. Frilling: With a sharp chisel or axe, make a deep cut into the sapwood at regular intervals around the base of the tree, taking care not to ring-bark the plant. Immediately saturate each cut with undiluted Tordon Brushkiller.
6. Injection method: As each hole is drilled saturate it with undiluted Tordon Brushkiller using a sheep drench pack with a spraygun.
Ragwort: Always ensure plant is ragwort before treating.
1. Weed wipe (spring-summer only): glyphosate (333ml/L + penetrant) or metsulfuron-methyl 600g/kg (5g/L + penetrant) or Tordon Gold (500ml/L).
2. Spray rosette plants (winter-spring only, before stem formed): 2,4-D (50ml/10 litres (knapsack) or 1-3 litres/ha in 300 litres water (boom spraying)).
3. Spray: cut any seedheads and dispose of by burning or deep burial, apply glyphosate (100ml/10L knapsack) or metsulfuron-methyl 600 g/kg (5g/10L knapsack) ensuring entire plant is covered.
4. Granules (all year round): Cut seedheads and dispose of by burning or deep burial, apply Tordon 2G (2g/plant – a half level teaspoon) to the the crushed centre of each plant.
5. Grubbing or pulling ragwort is best done at full to late flowering stage, when the roots are less likely to regrow. Flower heads of pulled plants should be burned.
Damaged plants (from cutting, digging, pugging, mowing or poor spraying) usually regrow, form large additional root crowns (multicrown) and become perennial, ie. flowering annually and not dying. These plants do not respond to 2,4-D herbicide, requiring tougher, more residual herbicides.