How Often Should You Fertilise Sir Walter Buffalo Grass?
A healthy lawn needs the right balance of nutrients, water, sunlight, and regular care to maintain strong, consistent growth. The Sir Walter Buffalo variety is known for its low-maintenance requirements, shade tolerance, drought tolerance, and ability to handle regular lawn use.
So, how often should you fertilise Sir Walter Buffalo grass? It is recommended to fertilise an established Sir Walter lawn 4–6 times per year, with applications generally made around the change of each season.
Here is a practical guide to fertilising Sir Walter Buffalo. Let’s understand when this lawn variety needs fertiliser, which type of fertiliser to use, how to apply it correctly, and how to avoid over-fertilising. The aim is to help you build a fertilising routine that suits your lawn’s condition and Perth’s growing conditions.
How Many Times Should You Fertilise Sir Walter Buffalo?
You do not need to automatically fertilise six times every year. The 4–6 application range allows the schedule to be adjusted according to the condition of the lawn and its growing environment.
| Applications per year | What it means |
| 4 applications | One application around each change of season. This is the basic annual schedule. |
| 5 applications | Four seasonal applications plus one additional light application mid Spring. |
| 6 applications | Four seasonal applications plus additional light applications in mid-spring and mid-summer when required. |
The additional spring and summer applications are optional, not compulsory. If the lawn is growing well and has recently received fertiliser, another application may not be needed.
For most established lawns, start with the four-season framework and assess the lawn before adding an extra feed.
Is the Fertilising Schedule Different for a New Sir Walter Lawn?
Yes. A new lawn needs a different approach while it establishes its root system.
Greenacres recommends fertilising a new lawn 4 weeks after installation with a granular, slow-release NPK fertiliser. The fertiliser should be applied according to the product label to a dry lawn mid morning and then watered in well to help prevent leaf burn.
NPK fertiliser should be applied at the change of every season once the lawn moves into its ongoing maintenance routine.
This first post-installation application should not be confused with repeatedly fertilising a newly laid lawn. Applying fertiliser too early can burn the leaf and stress developing roots, which is why it is recommended to wait for 4 weeks.
New turf also needs consistent watering while its root system develops. Fertiliser should support establishment rather than be used to force faster growth.
When Should You Fertilise Sir Walter Buffalo Through the Year?
Sir Walter’s fertilising schedule should follow the lawn’s seasonal growth and condition. Greenacres recommends feeding at the change of each season, with optional light applications in mid-spring and mid-summer when required.
- Spring
Spring marks the return of active growth after winter. Apply the seasonal fertiliser as growth increases. Apply a second light application around mid-spring if required.
Before applying that second feed, check the lawn’s colour, growth and previous fertilising history. If it is already growing well, another application may not be necessary.
- Summer
Summer is an active growth period for Sir Walter, but Perth’s heat can also place greater stress on the lawn. Apply the seasonal fertiliser and consider a second light application around mid-summer if required. Avoid fertiliser applications during extreme heat, such as very hot 40°C days.
Watering is particularly important during summer. It is recommended to have a regular, deep watering for established Sir Walter, adjusted according to weather and rainfall.
Fertiliser provides nutrients, but it cannot compensate for inadequate moisture.
- Autumn
As temperatures begin to fall, Sir Walter’s growth slows. Apply the seasonal fertiliser as part of the annual routine, while considering how many applications the lawn has already received during spring and summer.
Adjust the lawn care according to seasonal conditions rather than applying fertiliser beyond the six-application annual maximum. If the lawn is healthy and has already received adequate nutrition, there is no reason to add another feed simply because the calendar has changed.
- Winter
Sir Walter’s growth becomes much slower during winter. Includes winter fertilising within its seasonal maintenance guidance, while Water Corporation advises that winter fertilising depends on the condition of the lawn and whether it has already been fertilised in autumn. Ferilising just before Winter gives it the carbohydrates to carry through the winter months
Winter maintenance should also involve less frequent mowing and reduced watering as rainfall increases.
What Fertiliser Does Sir Walter Buffalo Grass Need?
Use a good-quality, slow-release NPK fertiliser for Sir Walter Buffalo maintenance.
NPK stands for nitrogen, phosphorus and potassium:
- Nitrogen: Promotes leaf development.
- Phosphorus: Promotes root growth.
- Potassium: Helps strengthen the grass and supports healthy growth.
Having a slow-release fertiliser feeds the lawn gradually, helping avoid sudden surge growth and unnecessary extra mowing.
The application rate should also suit the soil. Have frequent but light applications for poor sands, while heavier or improved soils generally require less.
Always follow the fertiliser manufacturer’s recommended application rate rather than increasing the amount because the lawn looks pale or growth appears slow.
How Should You Apply Fertiliser to Buffalo Grass?
Correct application helps the lawn use the nutrients effectively.
1. Check the lawn first.
Look at its colour, growth and general condition. Check when it was last fertilised and whether it has been receiving enough water.
A pale lawn does not automatically mean it needs another feed. Water stress, soil conditions, mowing and other growing factors can also affect lawn appearance.
2. Apply fertiliser to a dry lawn.
Apply fertiliser to a dry lawn. Applying the granules to wet turf can cause them to stick to the leaf, increasing the risk of leaf burn.
3. Spread it evenly.
Apply the fertiliser consistently across the lawn. Uneven application can leave some areas underfed while others receive too much.
4. Follow the product rate.
Do not increase the amount because the lawn looks pale or is growing slowly. Follow the product label for the recommended application rate.
Water Corporation also advises that the manufacturer’s recommended rate should be treated as the maximum amount to apply.
5. Water it in well.
After application, water the fertiliser in thoroughly. Greenacres specifically recommends watering well after applying fertiliser to a dry lawn.
For established lawns, these steps should form part of an ongoing Sir Walter lawn care routine rather than being treated as a standalone treatment.
Can You Fertilise Sir Walter Buffalo Too Often?
Yes. More fertiliser does not automatically mean a healthier lawn. It is recommended to use no more than six fertiliser applications per year. Applying fertiliser too frequently can encourage excessive growth and lead to unnecessary mowing.
Over-fertilising can also result in nutrients being applied when the lawn does not need them. Water Corporation warns that nutrients not used by the lawn can end up in waterways and recommends avoiding over-fertilising.
If the lawn looks pale or growth has slowed, do not automatically add another application. First check when it was last fertilised, how it has been watered, the soil condition, sunlight and mowing practices.
A consistent schedule is more useful than repeatedly adding fertiliser whenever the lawn looks stressed.
How Can You Tell If Your Sir Walter Lawn Needs Fertiliser?
A change in colour or growth can indicate that the lawn needs attention, but fertiliser should not be the automatic solution. Before applying another feed, check:
- When was the lawn last fertilised?
If it was recently fed, another application may be unnecessary. - Is the lawn actively growing?
Sir Walter grows more actively during warmer conditions and slows significantly during winter. - Is it receiving enough water?
Water stress can affect colour and growth even when nutrients are available. Greenacres notes that watering is a major factor in how well Sir Walter performs through Perth summers. - Is the soil holding water and nutrients?
Perth’s sandy soils can require a different fertilising approach from heavier or improved soils. - Is the lawn receiving enough sunlight?
Sir Walter is shade tolerant, but growing conditions still affect lawn performance. - Is it being mowed correctly?
Greenacres recommends maintaining appropriate seasonal mowing heights and avoiding removal of more than one-third of the leaf blade at a time.
Checking these factors first helps prevent unnecessary fertilising.
How Does Perth Soil Affect Sir Walter Fertilising?
Perth and the Southwest have naturally sandy soils that can have difficulty holding water and nutrients. Sandy soils do not hold nutrients for long and require frequent but light fertiliser applications for poor sands. Heavier or improved soils generally require less.
This means the same fertilising routine may not work identically for every Sir Walter lawn.
Soil condition, irrigation, rainfall and the lawn’s overall performance should all be considered when deciding if an additional application is needed.
Water Corporation also recommends improving soil conditions where needed, as suitable soil can help retain moisture and support healthier lawn growth.
What Should You Do Alongside Fertilising for Healthy Sir Walter Growth?
Fertilising works best as part of consistent lawn care.
- Water correctly. Fertiliser cannot compensate for water stress. Use regular, deep watering for established Sir Walter and adjust watering according to weather and rainfall.
- Mow correctly. Mow Sir Walter at approximately 15–20mm during summer and 20–25mm during winter, while avoiding removal of more than one-third of the leaf blade in a single mow.
- Check the soil. If water is not being absorbed properly, adding more fertiliser will not solve the underlying problem. Greenacres notes that Perth’s sandy soils can have difficulty absorbing and retaining water and nutrients.
- Adjust care by season. Watering, mowing and fertilising requirements change as temperatures and rainfall change.
The aim is to make fertilising one part of a consistent routine rather than relying on extra fertiliser to correct every lawn problem.
Closing Thoughts
Good fertilising is about applying the right product at the right time and rate, rather than simply applying more. When combined with appropriate watering, mowing and soil care, a consistent fertilising routine can help keep Sir Walter Buffalo healthy through Perth’s changing conditions.
If you are planning a Sir Walter Buffalo lawn in Perth or need help with its ongoing care, Greenacres Turf Group can provide turf and practical guidance for local growing conditions.
FAQs
Should I fertilise after mowing?
You do not need to fertilise after every mowing session. Follow the planned fertilising schedule and product instructions rather than timing fertiliser around every mow.
Should I water after applying fertiliser?
Yes. Also apply fertiliser to a dry lawn and then water it in well.
Why is my lawn yellow after fertilising?
Yellowing does not always mean the lawn needs more fertiliser. Check the application rate, watering, heat, soil condition and other growing factors before applying another feed. Applying fertiliser too early to newly laid turf can also burn the leaf and stress developing roots.
Is slow-release fertiliser better for Sir Walter Buffalo?
Use a good-quality, slow-release NPK fertiliser for Sir Walter maintenance. Its slow-release formula is designed to provide nutrients gradually and avoid surge growth and unnecessary extra mowing.
What happens if you miss a scheduled fertiliser application?
Do not compensate by applying extra fertiliser. Check the lawn’s condition, the time since its last application, and the current season, then return to the normal schedule using the recommended product rate.
The goal is to stay within the recommended annual fertilising range rather than trying to make up for one missed application with an excessive feed.
