If there’s one product that consistently earns its place in a serious lawn care routine, it’s Oxafert. A fertiliser and pre-emergent herbicide combined into a single application, it does two important jobs at once — and autumn is the window when applying it makes the most difference.
Whether you’re maintaining a home lawn or managing a larger turf area, understanding how Oxafert works and when to apply it will save you a season of frustration.
What Is Oxafert?
Oxafert is a granular product that combines a balanced fertiliser with oxadiazon, a pre-emergent herbicide that works by preventing weed seeds from germinating in the first place. Rather than killing weeds that have already emerged, it creates a barrier in the soil that stops them before they ever become a problem.
That distinction matters. Once weeds are established, your options for removing them become more limited, more time-consuming, and often more damaging to the surrounding turf. Getting ahead of them with a pre-emergent is simply the smarter approach. Prevention > Cure!
Why Autumn Is the Critical Window
Timing a pre-emergent correctly is everything. Applying it too early will cause it to degrade before the weed seeds germinate, but applying it too late and the seeds have already had a head start.
Autumn is the germination window for many of the most persistent winter weeds. Think annual ryegrass, winter grass (Poa annua), and broadleaf weeds, to name a few. As soil temperatures start to drop in late March and early April, these weeds are gearing up to take hold! Applying Oxafert at the start of autumn puts the barrier in place before that process begins, beating them before they even have a chance.
The fertiliser component works in your favour here too. Your lawn is coming out of summer, and autumn feeding supports root development and recovery as the season transitions. So you’re not just blocking weeds, you’re actively strengthening the turf at the same time.
How to Apply Oxafert
Getting the application right comes down to a few straightforward steps.
Mow first. Mowing your lawn before application helps the granules reach the soil surface rather than sitting in thatch or leaf canopy and it gives you a clean base to work from.
Use a spreader. For even coverage across the lawn, a rotary or drop spreader is the right tool. Uneven application means gaps in your weed barrier, which is exactly what you want to avoid.
Water it in. Oxafert needs to be activated by water. Apply it ahead of rain if possible, or water thoroughly after spreading to help the granules break down and move into the soil profile.
Avoid applying to wet or stressed turf. If your lawn is waterlogged or under heat stress, hold off until conditions improve. Application to stressed turf can reduce effectiveness and, in some cases, cause damage. It is also best to keep off the lawn for 24–48 hours following application, to give the product time to settle and activate before foot traffic resumes.
What to Expect After Application
Oxafert is not an instant fix — it’s a preventative measure, and that means the results are visible over time rather than overnight. In the weeks after application, you should see noticeably less weed germination than in previous seasons. Your lawn should also respond to the fertiliser component with improved colour and a denser growth habit as it heads into the cooler months.
For best results, a single autumn application is usually followed by a spring application to cover the opposite germination window. The team at StrathAyr can walk you through the right programme for your specific turf type and conditions.
Is Oxafert Suitable for Your Turf?
Oxafert is suitable for use on most established warm-season turf varieties including buffalo, couch, kikuyu, and zoysia. It should not be applied to newly laid turf or areas where turf establishment is still underway, because the pre-emergent activity that suppresses weeds can also interfere with turf root development in the early stages.
If you’ve recently laid a new lawn, hold off on Oxafert until the turf has had a full establishment period, typically around the three-month mark. If you’re unsure, just give us a call and we’ll point you in the right direction.
Ready to Get Your Autumn Programme Sorted?
Oxafert is available through the StrathAyr team, and we’re happy to advise on the right rate and timing for your turf type and the size of your area. Whether you have a small backyard or a larger property, getting the application right from the start makes all the difference.
Give us a call today and we’ll help you build an autumn care plan that protects your lawn through winter and sets it up to perform at its best come spring.
Always read and follow the product label prior to application. Application rates and timings may vary depending on turf variety, soil type, and regional conditions.
