Mullumbimby couch

What to look for

• Fine, grass-like leaves arise from creeping underground stems and can form a low mat.
• A small, compact, rounded greenish head sits above several spreading leaf-like bracts.
• Flowering stems have the sedge’s triangular cross-section.

Confirm it before you treat it

Take a close-up of the complete head and bracts, and carefully lift a small plant to inspect connected stems. Nutgrass usually has a branched head and underground nutlets; other Kyllinga sedges can have similar rounded heads. Do not identify it just because it grows faster than the lawn.

What to do next

1. Check whether damp pockets reflect overwatering, a leak, poor drainage or normal local conditions. Correct the cause where possible.
2. Remove small patches carefully, including connected underground stems. Avoid simply chopping and distributing fragments through clean turf.
3. Map persistent patches and ask for a sedge-specific plan. A broadleaf lawn spray or a grass-weed treatment is not automatically appropriate.

Conditions matter more than dates.

Moist turf and disturbed or thinning surfaces are useful places to scout. Coastal and warmer regions are important watch areas, but the weed is recorded beyond them.

Inspect during active growth, especially warm wet spells or after irrigation. In cooler sites the visible growth window may shorten; drainage and plant identification still take priority over a calendar.

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