Physical Control
Dig out all roots.
Disposal
Chemical Control
Spray with Glyphosate + Penetrant.
Rate - Handgun 1 litre Glyphosate + 200 mls Penetrant/100 litres water. Knapsack 100 mls Glyphosate + 20 mls Penetrant/10 litres water.
Biological Control
Recommended Approach