Few heads, mostly young plants, suggest to use black plastic for control. Mapped in FieldMaps not treated, but tall SVG removed from 2 guarded Carex appressa. Same site as in https://canberra.naturemapr.org/sightings/4743078 which shows heads growing out of a guard and around another one.
abread111 Would your propose the control with plastics to the M@F crew? there is still Builders plastics at the big conifer; I'm not sure about pegs to hold plastics in place. I wonder whether any of the Poa and Weeping grass seeds germinated that I broadcasted along the drainage line.