The 'set and forget' solution to having a great lawn all year round, this product includes selective herbicides that will kill most broadleaf weeds with some exceptions. Controls 16 common broadleaf weeds Slow, continuous feeding for three months Thickens lawns to help prevent weeds Superior results compared to traditional lawn fertilisers Growing tipDo not use on buffalo, carpet grass, lippia, dichondra or Santa Ana couch.
The 'set and forget' solution to having a great lawn all year round, this product includes selective herbicides that will kill most broadleaf weeds with some exceptions. Controls 16 common broadleaf weeds Slow, continuous feeding for three months Thickens lawns to help prevent weeds Superior results compared to traditional lawn fertilisers Growing tipDo not use on buffalo, carpet grass, lippia, dichondra or Santa Ana couch.
Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser
The 'set and forget' solution to having a great lawn all year round, this product includes selective herbicides that will kill most broadleaf weeds with some exceptions. Controls 16 common broadleaf weeds Slow, continuous feeding for three months Thickens lawns to help prevent weeds Superior results compared to traditional lawn fertilisers Growing tipDo not use on buffalo, carpet grass, lippia, dichondra or Santa Ana couch.
The 'set and forget' solution to having a great lawn all year round, this product includes selective herbicides that will kill most broadleaf weeds with some exceptions. Controls 16 common broadleaf weeds Slow, continuous feeding for three months Thickens lawns to help prevent weeds Superior results compared to traditional lawn fertilisers Growing tipDo not use on buffalo, carpet grass, lippia, dichondra or Santa Ana couch.
in 8 offers
The lowest price for Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser right now is $39.98 at Bunnings Warehouse, compared across 6 retailers.
The all-time low was $33.90 on 3 Sept 2025 — today's price is 18% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 10 May 2026.
Last updated at 10/05/2026 23:05:19
Scotts Lawn Builder 4kg Weedkill Slow Release Fertiliser
Delivery $10
Scotts Lawn Builder 4kg Weedkill Slow Release Fertiliser
Free next-day delivery
Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser
Delivery $19.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser
Delivery $14.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Scotts With Weedkill Fertiliser 4 Kg
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Scotts Lawn Builder & Weed Killer (Sizes: 4kg)
Delivery between 12–18 May $12
Lawn Builder + Weed Kill 4kg
Delivery between 15–18 May $46.58
Lawn Builder + Weedkill Slow Release Fertiliser 4 Kg | Scotts
Delivery $16
originally posted on bunnings.com.au
Excellent product. Worth the extra cost compared to other brands.
originally posted on bunnings.com.au
Great product. Simple to use with hand spreader. Works very weel to kill of weeds and makes the lawn look much better
originally posted on bunnings.com.au
Very effective at both fertilising your grass and killing broadleaf weeds.
| Total Weight | 4kg |
| Pest Type | Lawn weeds |
| Organic (Yes/No) | No |
Scotts Lawn Builder 4kg Weedkill Slow Release Fertiliser
Delivery $10
Scotts Lawn Builder 4kg Weedkill Slow Release Fertiliser
Free next-day delivery
Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser
Delivery $19.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Lawn Builder 4kg Scotts Weedkill Slow Release Lawn Fertiliser
Delivery $14.99
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Scotts With Weedkill Fertiliser 4 Kg
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Excellent product. Worth the extra cost compared to other brands.
Great product. Simple to use with hand spreader. Works very weel to kill of weeds and makes the lawn look much better
Very effective at both fertilising your grass and killing broadleaf weeds.
I use this product regularly, it does what it says on the packet, keeps the lawn looking lovely and green all year round.
I highly recommend Scotts Lawn Builder with Weed Killer. I've used this product for several years, and it removes the weeds, and makes the grass grow at a rapid rate. It really turned my weed ridden lawn around.
I use this regularly and it does a great job, keeps the lawn looking good and green
Works extremely well and very easy to use
I prefer dry weed killers and this product works against the tough mallow weed! My big naturestrip is infested with mallow weed which are very hard to get rid of. I tried manual weeding, spot spraying with glyphosate but end up killing grass as well. I have tried other dry weed killers (iron based) but this one actually works.
Forget that this fertiliser has herbicides in it for a moment. The nutrients in this is exactly what you are after if you have a cool season lawn. The NPK is 20/1/15 which is ideal for a turf grass where you want strong colour. There's also 2% iron which gives you a dark green colour.Not sure why the range of fertilisers in bunnings have such variations in NPK but if you have ryegrass (likely if you used seed from a box) then this is the fertiliser you should use.For cool season grasses apply in early March, late May, late August, early October if you want to look as lush green carpet all year round.Oh and don't forget to mow and water your lawns more often.
The product is very effective in a gentle way, getting the desired results.
| Total Weight | 4kg |
| Pest Type | Lawn weeds |
| Organic (Yes/No) | No |
