Top 3 Tips for a Healthy Buffalo Lawn
Buffalo is one of the most planted lawn types in Australian backyards, and it earns its spot. It’s soft underfoot, it handles kids, pets and backyard cricket, and it tolerates shade better than most other warm-season grasses. Buffalo generally needs a minimum of three to four hours of direct sunlight a day to do well, which is far less demanding than couch and makes it a sensible choice for the tighter blocks and side yards common across newer estates.
So why do so many buffalo lawns end up thin, patchy, spongy or overrun with weeds?
Almost always, it comes down to one of three things: how it’s mown, how it’s watered or what’s being put on it. And to understand why those three matter so much, you need to know one thing about buffalo that separates it from every other common lawn type.
Buffalo spreads by above-ground runners, called stolons. It does not have underground rhizomes the way couch and kikuyu do. That means when a couch lawn gets hammered — scalped, sprayed, stressed — it has an underground network to regrow from. Buffalo doesn’t. Everything it needs to recover is sitting on the surface, exposed. Damage the top and there’s no backup.
Keep that in mind and the rest of this makes sense.
Tip 1: Mow it higher than you think, and never scalp it
The single most common mistake we see on buffalo lawns is cutting them too short.
Buffalo generally likes to be mown somewhere between 20mm and 60mm. For most home lawns, a practical working range is 30–50mm. Yates recommends keeping an established buffalo lawn (at least four to six weeks after laying) between 2 and 5cm, and lifting the height to 5–7cm in heavy shade, because the extra leaf area helps the grass cope with low light. A good rule: the shadier the spot, the higher the cut.
Seasonally, it’s normal to run the mower a little lower through the warmer months and lift the height back up over winter.
The one-third rule
Never remove more than one-third of the leaf in a single cut. If your lawn is sitting at 60mm, take it back to about 40mm — not 25mm. Removing more than a third at once puts the lawn under real stress, slows recovery and opens the door to weeds.
This is why frequency matters more than people expect. Through spring and summer, regular light mowing is far better for buffalo than letting it get away from you and then taking a big cut to fix it. Over the cooler months, growth slows right down and mowing becomes minimal.
Why scalping hurts buffalo more than other lawns
Scalping is when the mower cuts down past the green leaf and into the brown or white thatch layer underneath, or right down to soil. On buffalo, this is a genuine problem rather than a cosmetic one.
Because buffalo has no underground rhizomes, cutting away the surface runners removes the very structure the lawn regrows from. The result is bare, discoloured patches that take a long time to fill back in — and while they’re bare, weeds move straight into them. Cutting too low also strips away the leaf the plant needs for photosynthesis and exposes the soil surface to direct heat, which drives water use up.
If your lawn has crept up in height over a season, drop the mower gradually over several cuts rather than taking it all off in one go.
Correct mowing is also your thatch control
Buffalo builds a thatch layer naturally. Each new generation of runners grows over the top of the old ones, and over time that layer thickens. The problem is that once it gets deep enough, the roots end up living in thatch rather than soil — and thatch doesn’t hold water or supply nutrients the way soil does. That’s when you get a lawn that feels spongy underfoot, sheds water instead of absorbing it, and browns off despite regular watering.
Regular mowing at the correct height is the best day-to-day defence, because it removes runner material before it becomes thatch and pushes the plant to produce leaf instead. Heavy dethatching and aggressive scarifying are risky on buffalo for the same reason scalping is — remove all the above-ground material and there’s nothing left to recover from. If a buffalo lawn genuinely needs renovating, it’s a spring job done carefully, not an aggressive one.
Last thing: keep your blades sharp. Blunt blades tear the leaf rather than cutting it, which leaves a ragged, greyish finish and gives disease an easy entry point.
Tip 2: Water deeply, not often
Buffalo is genuinely drought tolerant once established, and in most seasons rainfall does a lot of the work. Watering is best treated as an as-needed job rather than a fixed daily habit.
Learn to read the lawn
Buffalo tells you when it’s thirsty. Watch for leaves folding or curling in on themselves, wilting, or leaf that’s drying off and browning. Those signs are your cue — not the calendar.
Deep and infrequent beats short and daily
A light sprinkle every evening is one of the worst things you can do to a buffalo lawn. It keeps moisture in the top centimetre or two of soil, which is exactly where the roots will then stay. Shallow roots mean a lawn that can’t survive a hot week without irrigation.
Watering for longer, less often, forces the roots down into the soil profile chasing moisture. That’s what makes a lawn drought tolerant.
As a guide, aim for around 10–15mm of water per session. You don’t need a fancy meter to check this — put a straight-sided container (an empty tuna tin works perfectly) on the lawn while the sprinkler runs and see how long it takes to fill to that depth. Now you know your run time.
Frequency shifts with the season. Through summer, two to three sessions a week is a common pattern. Autumn and spring usually need one, sometimes two. Through winter, buffalo goes semi-dormant and often needs little or nothing beyond rainfall.
An important nuance for hot weather: when a heatwave hits, increase the amount of water per session rather than adding more watering days. More days of shallow watering just retrains the roots to stay shallow.
Lawns on corner blocks, or surrounded by paving, driveways and retaining walls, will need more than a sheltered backyard. All that hard surface radiates heat and drives evaporation.
Water in the morning
Morning is the best time. Less is lost to evaporation, and the leaf has the whole day to dry off. Watering in the late afternoon or evening leaves the lawn sitting damp overnight, which is how fungal problems get started.
If the water is running off instead of soaking in
Over time, the soil surface under a lawn can turn water-repellent, so moisture beads up and runs off rather than penetrating to the root zone. If you’re watering properly and the lawn still looks thirsty, a wetting agent (soil wetter) applied and watered in will help moisture move evenly down into the soil.
And don’t overdo it
Overwatering isn’t a safe error. Too much water encourages soft, excessive growth, increases disease pressure, can cause root rot, and leaves the lawn less drought tolerant than it should be.
Tip 3: Feed it three times a year — and be very careful what you spray
Feeding
Three feeds a year suits most buffalo lawns: once in spring, once in summer, and once in autumn. That’s enough to keep colour and density up without pushing the lawn into growth it can’t support.
Use a quality slow-release granular fertiliser with a balanced NPK ratio. Nitrogen drives leaf growth and colour, phosphorus supports roots, and potassium builds resilience to drought and disease. Soft-leaf buffalo varieties also appreciate iron, which is what gives you deep green colour without forcing a growth surge. As a rough application guide, slow-release granular fertiliser is commonly applied at around 20–25g per square metre.
Always water fertiliser in well. Granules left sitting on the leaf, particularly on a hot day, can burn it.
Resist the urge to feed more. Over-fertilising buffalo produces soft, sappy growth that’s more attractive to pests and more prone to disease, and it accelerates thatch build-up. A well-fed lawn is also your best weed control, because dense turf simply doesn’t leave room for weeds to establish.
The expensive mistake: the wrong weed killer
This is where buffalo owners get caught out, and it’s worth spelling out clearly.
Buffalo is sensitive to herbicides that other lawns shrug off. The two active ingredients to avoid are dicamba and DSMA. These turn up in plenty of general-purpose weed and feed products and in herbicides marketed for summer grass — products that are perfectly fine on couch or kikuyu and will wreck a buffalo lawn.
If dicamba goes onto buffalo, the lawn will typically bleach or yellow, the leaf curls up and dries out, growth stops, and the plant may die outright. The damage is worse when it’s applied in hot weather.
Selective herbicides based on MCPA and bromoxynil are generally safe on buffalo and will handle the usual broadleaf offenders — bindii, clover, creeping oxalis, cudweed, capeweed, dandelion. But don’t rely on the active ingredient alone: buy products that explicitly state they’re safe for buffalo lawns on the label, and read the label before you spray. Every time.
Two timing rules worth following:
- Don’t spray straight after mowing. Freshly cut leaf is essentially an open wound and absorbs herbicide readily, which is how you damage the lawn instead of the weeds.
- Don’t mow straight after spraying. Give the weeds several days to absorb and translocate the chemical before you cut the treated foliage off.
If you’ve accidentally applied a dicamba product, water the area thoroughly and immediately — if you can wash it off the leaf before it’s absorbed, you may limit the damage. Then avoid adding any further stress for a few weeks: no more herbicide, no granular fertiliser, and no low mowing.
Buffalo lawn FAQs
What is the best mowing height for buffalo grass? Most buffalo lawns do best between 30mm and 50mm, within a broader tolerated range of roughly 20–60mm. Raise the height to 50–70mm in heavy shade, and lift it slightly over winter.
How often should I mow my buffalo lawn? Frequently enough that you never remove more than one-third of the leaf in a single cut. In practice that’s roughly weekly to fortnightly through spring and summer, stretching out to every few weeks in autumn and minimal mowing in winter.
Why is my buffalo lawn spongy underfoot? That’s usually thatch — a build-up of old runners beneath the green leaf. Once it’s deep enough, the roots start living in the thatch instead of the soil, which holds neither water nor nutrients well. Consistent mowing at the correct height is the best prevention.
Can I use weed and feed on a buffalo lawn? Only if the product is specifically labelled as safe for buffalo. Many general weed and feed products contain dicamba, which will bleach, curl and potentially kill buffalo grass.
How much sun does buffalo grass need? Buffalo is one of the more shade-tolerant warm-season lawns, but it still needs a minimum of around three to four hours of direct sunlight per day.
Why does my buffalo lawn lose colour in winter? Buffalo is a warm-season grass. It goes semi-dormant as soil temperatures drop, so growth slows dramatically and colour fades. It’s normal, and it greens back up as things warm in spring.
In conclusion
A healthy buffalo lawn isn’t complicated, but it is specific. Mow it high and mow it regularly. Water it deeply and only when it asks for it. Feed it three times a year, and never put a herbicide on it without checking the label first.
Get those three right and buffalo largely looks after itself — which is exactly why it’s such a popular lawn in the first place.
If you’d rather not think about any of it, that’s what we’re here for. Keeping It Green has been mowing and maintaining lawns across Camden and the wider Macarthur region since 2015, and we handle the scheduling so you don’t have to.