Scotts Lawn Builder +Wetting Agent Slow Release Lawn Fertiliser

Scotts Lawn Builder +Wetting Agent Slow Release Lawn Fertiliser

Size: 4kg
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Main product features
Feeds for up to 3 months
Feeds for up to 3 months
Waterlock technology
Waterlock technology
No scorch formula
No scorch formula
Child and pet friendly
Child and pet friendly

This popular lawn fertiliser has an excellent reputation with home gardeners and professional turf managers alike. The 'set and forget' solution to having a great lawn all year round, this product includes a wetting agent that help water soak into the soil

When to use


  • Boosted iron content promotes deeper green and stronger growth. The thicker the lawn, the less chance weeds have of taking hold - they're smothered before they become obvious and need treatment
  • Slow-release of nutrients through controlled feeding, eliminates waste through run-off and leaching and prevents burning and surge growth
  • Wetting agent assists water and nutrients to penetrate well into the soil, reducing water run-off. It encourages deeper roots so less watering is needed and helps make lawns more drought tolerant
  • Traditional lawn foods release or 'dump' most of their nutrients within a couple of weeks of application, causing a rapid surge in growth that quickly drops off again as the food supply diminishes. Scotts Lawn Builderâ„¢ uses patented time-release technology to ensure nutrients are released slowly and continuously over a three month period
  • Wetting Agent has only 0.5% phosphorus, which means it can be safely used anywhere in New Zealand without posing any risk to ground or surface water
  • The recommended low application rate is just 16 grams per m2, not the kilograms often associated with regular lawn foods!
  • When used as directed, this product is safe to use around domestic pets and children. Check paws and feet for granules before allowing pets or children on to paved areas as staining may occur



  • All lawn grasses including all named varieties of buffalo, traditional couch, Santa Ana couch, kikuyu, bent, fescues and carpet grass
  • All grass substitutes such as dichondra (also known as pennywort or kidney weed), lippia, zoysia



  • Scotts Lawn Builder is not recommended for use on plants other than lawn grasses and lawn substitutes
  • Do not use on lawns less than 8 weeks old - from germination of seed or installation of instant turf (use Scotts Lawn Builder Seed & Turf Starter)
  • Do not use if the temperature is expected to exceed 30 degrees C - wait for a cool spell


  • Scotts Lawn Builder is a slow-release fertiliser that provides continuous nutrition over a three month period
  • Every granule of Scotts Lawn Builder + Wetting Agent contains Scotts patented time-release nitrogen
  • The included professional grade wetting agent assists moisture to penetrate deep into the root zone and improves the uptake of nutrients
  • Nutrients are released at about the same rate that grass roots can take up the fertiliser so there is no wastage, run-off to waterways or damaging surge growth



How much will I need?

This Scotts Lawn Builder has a recommended application rate of 16g/m2

To work out how much you will need to fertilise your lawn

  1. Calculate the area of the lawn in square metres (multiply the length by the width)
  2. The area multiplied by the application rate will give the exact amount of Scotts Lawn Builder you need
  3. Use a set of scales to weigh it out and then add it to the spreader ready to apply - do not be tempted to add a 'bit extra for luck' because over-application may result in nitrogen burning


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How do I apply it?

  1. For best results ALWAYS use a Scotts spreader
  2. Check your model and make sure to set it correctly before you start (settings are also on the back label of the product)
  3. If you don't have a spreader, make sure you distribute the fertiliser evenly over the lawn - uneven applications may result in 'hot spot' burning where too much has landed in one spot


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Dry Method

  • If water restrictions are in operation, apply to the lawn without watering in
  • Scotts Lawn Builder is safe on the lawn until it next rains or the lawn needs watering when it has been applied evenly with a spreader and at the rate recommended on the bag
  • Scotts Lawn Builder + Wetting Agent is guaranteed to green the lawn within one week of the lawn receiving moisture


Fast Method

  • Your lawn will be greener in two days with watering
  • For fast results apply to moist lawn, wait 24 hours and then water in thoroughly

For a complete guide on How to Use Scotts Lawn Builder + Wetting Agent Slow Release Lawn Fertiliser, always check the packaging



  • For best results, feed your lawns three times a year - in early Spring, early Summer and Autumn
  • Avoid feeding lawns in cooler regions in Winter
  • The release of nutrients from granules is controlled by temperature
  • In Winter when soil temperatures are low and lawn growth is extremely slow in many areas, the granules will simply 'sit' there



IMPORTANT: This product, when wet, will cause iron stains. Be sure to sweep all granules off paths, coping, paving, driveways, shoes, etc immediately after use. Do not allow the granules to come into contact with these surfaces when they are wet

Store safely out of the reach of children and pets. This product contains iron which can be harmful to dogs' livers if eaten in quantity

SAFETY FIRST: Read the instructions on the product packaging before use and take particular note of any warnings or cautions on the label

See the Safety Data Sheet for this product



NPK 21 : 0.5 : 5

Boosted sulphur and iron for rapid greening

Feeds for 3 months without burning when used as directed and applied at no higher than the rate recommended on the bag

Includes Scotts patented time-release nitrogen and potassium formulated to release nutrients as your lawn needs them

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Find your local store and start growing your garden.

Looking for specialised gardening advice or just searching for a specific product? Visit your local store and get help from dedicated staff.

Find your local store and start growing your garden.

Looking for specialised gardening advice or just searching for a specific product? Visit your local store and get help from dedicated staff.