Couch
Cynodon dactylon
A fine-leafed warm-season grass that makes a dense, hard-wearing lawn in full sun and can be mown short. It spreads above and below ground, and thins out in shade.
Also called: Couch grass, Common couch, Hybrid couch, Bermuda grass, Santa Ana, Wintergreen, TifTuf
- Type
- Warm-season grass
- Shade tolerance
- Low
- Wear tolerance
- High
- Drought tolerance
- Medium
- Maintenance
- Medium
Short answer
Couch is a fine-leafed, warm-season grass that makes a dense, hard-wearing lawn in full sun and can be mown short. It spreads above and below ground, so it repairs quickly but creeps into garden beds. It needs at least 5 hours of direct sun a day, goes brown in cold winters and thins out in shade.
Overview
Couch makes the fine, dense surface you see on sports fields and bowling greens, and in a sunny backyard it is tough and quick to recover. It suits people who like a neat, short lawn and don’t mind mowing often in summer.
It needs sun: in shade it thins out quickly. In cooler zones couch goes dormant and brown over winter, then greens up as soils warm in spring. Like kikuyu, it spreads underground as well as on the surface, so it needs edging.
Couch can get a disease called spring dead spot, which shows as dead circular patches at spring green-up. [CONFIRM: reviewer to confirm climate suitability ratings]
How to identify couch
- Leaves
- Fine, narrow leaves, much finer than buffalo or kikuyu.
- Colour
- Mid to dark green; goes brown over winter dormancy in cooler zones.
- Growth
- Spreads by runners on the surface and underground, forming a dense mat.
- Seed heads
- Finger-like seed heads with several thin spikes, seen when it's left unmown.
- Feel
- Fine and dense.
Climate suitability
| Climate zone | Suitability | Notes |
|---|---|---|
| Tropical | Suited | |
| Subtropical | Well suited | |
| Warm temperate | Well suited | |
| Temperate | Suited | Dormant and brown over winter. |
| Cool and highland (including Tasmania) | Marginal | |
| Arid and inland | Well suited | With reliable watering. |
Sun and shade: Low shade tolerance
The Turf Growers Association of WA lists couch as needing at least 5 hours of direct sun a day.
Wear: High
Described by the Turf Growers Association of WA as having excellent wear, recovery and green-up.
Drought: Medium
Described as drought tolerant by the Turf Growers Association of WA.
Maintenance: Medium
Looks best mown often; needs edging to keep it out of beds.
Mowing heights by season
| Season | Height | Notes |
|---|---|---|
| Summer | 10–12 mm | Western Australian figures from the Turf Growers Association of WA. |
| Winter | 12–16 mm | TGAWA figure. |
Couch tolerates lower mowing than buffalo or kikuyu, but scalping in one go still damages it. [CONFIRM: reviewer to confirm LawnMan's recommended mowing range for couch outside WA]
Feeding and watering
Fertilising
Feed in the growing season at the label rate. Couch greens up quickly after feeding once soils warm in spring.
Watering
Water deeply and less often once established, within your local water rules.
Common weeds, pests and diseases in couch
Popular questions about couch
Guides
- application guideHow to apply granular lawn fertiliser
- application guideHow to apply lawn grub and armyworm treatments
- application guideApplying liquid fertiliser
- application guideApplying pre-emergent herbicide
- application guideHow to apply a lawn wetting agent
- GuideGrowing grass in shade: what works, what doesn't and what to do instead
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Who wrote this, and what it's based on
This page hasn't been reviewed by our technical reviewer yet [CONFIRM: reviewer]. Until it is, it isn't listed in search engines. How we write and review
Sources
- Turf varieties, Turf Growers Association of Western AustraliaCouch: sunlight, wear, drought and mowing heights. Accessed 3 October 2026.
- Managing garden weeds: creeping plants (factsheet), NSW Department of Primary IndustriesCouch as a weed of garden beds. Accessed 4 October 2026.
- Turf weed, pest and disease identification guide (poster), Bayer Environmental Science, hosted by Turf AustraliaSpring dead spot in couch. Accessed 3 October 2026.