Pennyroyal (Mentha pulegium)

	Pennyroyal
***

A perennial that is often found in damp pastures. The flowers are purple and will appear in late summer (Jan-Mar).
Treating late in the growth stage seems to give the best results (ie) when fully vegetative through until flowering. (November to February)
The weed has a very distinctive 'minty' smell when the leaves are crushed between your fingers and is an easy method of positive identification.

Control

Broadcast
• Established pastures – 5-6L/ha 2,4-D Amine herbicide is the suggested treatment. This will give approximately 60 - 70% control. It has also been found that Pasture-Kleen* Xtra herbicide applied at 4-5L/ha is equally effective.
• Poor results are obtained if MCPA herbicide is used.
No clover selective option is available (ie) MCPB, Select* and Preside* herbicides are
ineffective against Pennyroyal.

Spot treatment
Tordon* MAX or Tordon Brushkiller will provide good control when applied through a knapsack as a spot treatment. The standard use rate for a knapsack of 6ml/L should be used for both products. No additional wetter is required.

Tordon MAX, Tordon Brushkiller, Pasture-Kleen Xtra, MCPB, Select and Preside are registered to the ACVM Act 1997 No’s P7231, 3737, 0268, 5202, 4815.