Lawn Feed as you Weed
Iron, not herbicide. Keep it off the concrete.
Richgro's granular weed and feed: a 10kg bag that treats 150 square metres at 5-0-0-8, with 50g/kg of iron present as ferrous sulphate. It feeds the lawn and burns out clover, dandelions, thistles and flat weeds. The same iron stains concrete, paving and brick permanently, so every granule has to stay on the grass.
Or call the yard on (08) 9434 2290

Real stock, not a swatch. Blended products vary a little batch to batch, so treat these as a guide rather than an exact colour match.
Lawn Feed as you Weed details
Lawn Feed as you Weed at a glance
- Product type
- Granular weed and feed
- Brand
- Richgro
- Analysis
- 5-0-0-8 (N-P-K-S)
- Active
- 50g/kg iron, as ferrous sulphate
- Pack
- 10kg, treats 150m²
- Warning
- Stains concrete and paving permanently
What Lawn Feed as you Weed suits
What can you use Lawn Feed as you Weed for?
Clover and flat weeds
The broadleaf weeds that actually take over a Perth lawn — clover, dandelions, thistles and flat weeds. Iron burn works on the foliage.
Buffalo lawns
The granular product is buffalo safe, confirmed by Richgro's own FAQ and by the bag. That is a short list among weed and feeds.
Whole-lawn treatment
One pass over the whole area rather than spot spraying and then feeding separately. Monthly is the label frequency.
Anyone avoiding a selective herbicide
The active is iron, not a synthetic herbicide. Worth knowing if that is a decision you have already made about your lawn.
How much weed and feed?
One kilogram per fifteen square metres
The label rate is 1kg per 15 square metres, which puts the 10kg bag at 150 square metres of lawn. That is the rate, and going heavier does not work faster.
Measure the lawn before you buy. This bag covers a good deal less ground than a straight lawn food of the same weight, because it is doing two jobs.
| Lawn | Product | Worth knowing |
|---|---|---|
| A typical front lawn, 100m² | About 6.5kg | Most of the bag. Spread dry and evenly. |
| 150m² | One full 10kg bag | The bag's stated coverage. |
| Front and back, 300m² | Two bags | Treat it in one session so the lawn recovers evenly. |
Sweep or blow every stray granule back onto the grass before you water. Ferrous sulphate marks concrete, paving, brick and driveways permanently.
Lawn Feed as you Weed in Perth
Limestone, exposed aggregate and the Swan
Perth gardens are full of the surfaces this product marks: limestone paving, exposed aggregate driveways, brick paving and poured concrete right up to the grass edge. Ferrous sulphate stains all of them and the mark is permanent, so the sweeping-up step is not optional here — it is the difference between a treated lawn and a spotted driveway.
The other one is water. Do not let it reach drains, streams or ponds. On the coastal plain a stormwater drain is a short trip to a wetland or the river, and nutrient running off lawns is a known problem for both.
Why Lawn Feed as you Weed
Why choose Lawn Feed as you Weed?
Two jobs, one pass
The lawn greens up while the broadleaf weeds are knocked back. Spot spraying and then feeding is two afternoons and two products.
Iron as the active
Fifty grams per kilogram, present as ferrous sulphate. It works by burning weed foliage rather than by a systemic herbicide.
Buffalo safe, in the granular
Richgro confirm it for this product. The liquid in the same range is not, and that catches people out.
A rate you can measure
One kilogram per 15 square metres — 150 square metres from the 10kg bag. There is nothing to gain from going heavier.
Getting Lawn Feed as you Weed home
How to get Lawn Feed as you Weed
Collect from the yard
Open seven days at 222 Barrington St, Bibra Lake. The loader puts it straight into your trailer or ute, and someone will tell you whether what you have brought will carry the load.
Borrow one of our trailers free for two hours to get your load home. No charge, no bond.
Have it delivered
Across Perth's southern suburbs, seven days. For a quote we need the address, how much you need, and anything awkward about access — tight driveways, low branches and side access all change which truck we send. Confirm the current cost when you order.
Formats
- 10kg bags
- Single bags or by the pallet
Using Lawn Feed as you Weed
How to use Lawn Feed as you Weed
Spread it dry, at the rate
One kilogram per 15 square metres, in dry mild weather. Even coverage matters — heavy patches will mark the lawn as well as the path.
Sweep the strays back onto the grass
Before you water, and this is the step people skip. Ferrous sulphate marks concrete, paving, brick and driveways permanently, and once it is wet the mark is made.
Leave it two days, then water in
The iron needs time on the weed foliage to do its work. Water it in thoroughly after that, and mow again seven to ten days later.
Expect it to darken first
The lawn may go darker before it recovers. That is the iron doing its job and it passes — it is not a sign you have overdone it.
When to choose something else
When it is the wrong product
- It stains concrete, paving, brick and driveways permanently. This is the number one complaint with the product, the mark does not wash off or fade, and never tip the bag out anywhere but on grass.
- It is not for lawns running hard up against exposed concrete or pavers, unless you can genuinely keep every granule off them.
- Do not let it reach drains, streams or ponds.
- The granular product is buffalo safe. The liquid Feed as you Weed in the same range is not — do not carry the assumption across.
- Monthly is the label frequency and there is nothing to gain from going heavier than the rate. Keep it out of reach of children, as the pack says.
Customer reviews
What people say
Lawn Feed as you Weed questions
Lawn Feed as you Weed FAQs
Goes with Lawn Feed as you Weed
Other products you may need
If the lawn is clean
More coverage, nothing that stains.
When feeding is not the problem
A lawn that keeps failing usually needs the soil fixed.
Feeds for beds
The garden rather than the turf.
Guides for lawn feed as you weed
Planning your project
Lawn Feed as you Weed quote
Need Lawn Feed as you Weed for your project?
Send us the quantity you need, your suburb, and whether you would like to collect it or have it delivered. If you are not sure how much, put your measurements into the calculator above and we will check it for you.
Or ring the yard on (08) 9434 2290
222 Barrington St, Bibra Lake WA 6163 · Open 7 days
Use the calculator above and the amount lands in the message for you.













