Does your lawn look a little… sad? Are you tired of patchy green spots and weeds taking over your beautiful grass? You are not alone! Many homeowners feel lost when they stand in front of the fertiliser aisle. So many bags, numbers, and words like “NPK” can make your head spin. Choosing the wrong food for your lawn can lead to wasted money and even grass damage!
Getting that lush, vibrant green carpet you dream about is totally possible. You just need the right fuel. This guide cuts through the confusion. We will clearly explain what fertiliser actually does for your grass. You will learn exactly how to pick the best product for your lawn’s specific needs, whether it’s spring, summer, or fall.
Keep reading to unlock the secrets to a healthier, greener lawn that will make your neighbours jealous. Let’s stop guessing and start growing amazing grass today!
Top Fertiliser For Grass Recommendations
- WHERE TO USE: Lawn fertilizer for grass can be used on any grass type
- GRASS FERTILIZER FOR LAWNS: Scotts Turf Builder Lawn Food feeds and strengthens your grass to help protect against future problems
- STRONG ROOTS: Our pesticide-free lawn food for grass builds strong, deep roots, improving your lawn's ability to absorb water and nutrients (vs unfed lawn)
- HOW TO APPLY: Apply to a wet or dry lawn in spring, summer, or fall
- Up to 2X more powerful dandelion and clover control (vs. previous formula)
- Clears out dandelions and clover—satisfaction guaranteed
- Weedgrip Technology grips the weeds you see—and the ones you don't
- Scotts most powerful weed and feed
- Feeds to thicken lawns and crowd out weeds
- Scotts Liquid Green Max Lawn Food is your go-to liquid fertilizer and iron supplement for greening your lawn in just 3 days, so bring on those last-minute barbecues and an outdoor season chock-full of fun
- The dual-action, 2-in-1 formula feeds and supplements with iron to enhance and deepen the green color of your grass
- Apply to any type of grass, from Kentucky Bluegrass to Bermudagrass; for the best results use regularly from early spring through late fall
- A well-fed lawn leads to a green lawn, which cleans air, prevents runoff and soil erosion, and makes the great outdoors even greater
- Application is as easy as connecting your hose to the bottle, pointing the spray nozzle and letting this liquid fertilizer cover up to 2,000 sq ft—no granules, no spreaders, no hassle
- WHERE TO USE: Lawn fertilizer for grass can be used on any grass type
- GRASS FERTILIZER FOR LAWNS: Scotts Turf Builder Lawn Food feeds and strengthens your grass to help protect against future problems
- STRONG ROOTS: Our pesticide-free lawn food for grass builds strong, deep roots, improving your lawn's ability to absorb water and nutrients (vs unfed lawn)
- HOW TO APPLY: Apply to a wet or dry lawn in spring, summer, or fall
- COVERAGE: One 37.50 lb. bag of Scotts Turf Builder Lawn Food covers 15,000 sq. ft.
- WHEN TO APPLY: Apply pre-emergent weed killer plus lawn fertilizer to a dry lawn when temperatures are consistently between 60°F and 90°F for best results
- TRIPLE ACTION FORMULA: Designed to be used when planting new grass, Scotts Turf Builder Triple Action Built For Seeding prevents dandelion and crabgrass for up to 6 weeks without harming new grass, jump starts grass development, and strengthens new grass
- WEED PREVENTION: This dandelion and crabgrass preventer prevents other listed bothersome lawn weeds including clover, chickweed, ground ivy, henbit, and nutsedge; new weeds will sprout white or turn white and quickly die; will not kill existing weeds
- GRASS TYPES: A weed preventer and lawn food for grass to use on newly seeded, overseeded, or newly planted Kentucky Bluegrass, Tall Fescue, Perennial Ryegrass, Centipedegrass, and Fine Fescues
- COVERAGE: One 4.3 lb. bag of Scotts Turf Builder Triple Action Built For Seeding covers 1,000 sq. ft.
- Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
- Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
- Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
- All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
- Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
- FAST GROWING GRASS SEED MIX: Scotts Turf Builder Rapid Grass Tall Fescue grass seeds for lawns grows grass 2X faster than seed alone (when applied at the new lawn rate, subject to proper care)
- TALL FESCUE MIX WITH LAWN FOOD: Revolutionary grass seed and fertilizer all in one that grows full, green grass in just weeks
- USAGE: This tall fescue grass seed mix is for overseeding large problem areas in your lawn and establishing new grass
- APPLICATION: Apply this lawn care product in the spring or fall when temperatures are between 60°F and 80°F
- COVERAGE: One 5.6 lb. bag of Scotts Turf Builder Rapid Grass Tall Fescue Mix has a new lawn coverage of 615 sq. ft. and an overseeding coverage of 1,845 sq. ft.
- LAWN BARE SPOT REPAIR: Scotts PatchMaster Lawn Repair Mix Sun + Shade Mix is a combination mulch, seed, and lawn fertilizer product specifically designed to provide all-in-one bare spot repair and grass patch repair for lawns
- MULCH: This sun and shade grass seed mix contains 100% recycled mulch that absorbs 3 times its weight in water to help keep the seed moist and in place during establishment
- READY-TO-GROW: Scotts PatchMaster Lawn Repair Mix Sun + Shade Mix has lawn seed that starts to grow in as few as 7 days and feeds for up to 6 weeks
- GRASS FERTILIZER FOR LAWNS: Includes controlled release nitrogen that seedlings need for fast growing and thick results
- GRASS SEED MIX: Premium lawn grass seed mixture of Kentucky Bluegrass seed, perennial ryegrass, and fine fescue grass seed specially selected to blend with your existing lawn
The Ultimate Buying Guide for Lush Green Grass: Fertiliser Facts
Do you dream of a lawn that looks like a vibrant green carpet? Getting that perfect grass takes more than just mowing. You need the right food—fertiliser! This guide helps you pick the best fertiliser for your lawn.
Key Features to Look For
When buying fertiliser, you will see a set of three numbers on the bag, like 10-10-10. These numbers tell you the main ingredients.
The N-P-K Ratio
- N (Nitrogen): This is the most important part for green, leafy growth. High nitrogen makes your grass grow fast and look deep green.
- P (Phosphorus): This helps with strong root development, especially important for new grass or seeding.
- K (Potassium): This builds overall plant health, helping the grass fight off stress like drought or disease.
Release Speed
- Quick-Release: These fertilisers work fast. Your grass turns green quickly, but you need to apply them more often.
- Slow-Release (or Controlled-Release): These feed your lawn slowly over several weeks or months. This gives you steady growth and reduces the chance of burning your grass.
Important Materials in Lawn Food
Fertilisers contain nutrients that plants need to thrive. Understanding the materials helps you choose wisely.
Primary Nutrients
- Nitrogen Sources: Look for urea or ammonium sulfate for quick action. For longer feeding, look for polymer-coated urea.
- Phosphorus Sources: Triple superphosphate is a common source. (Note: Some areas restrict phosphorus if your soil already has enough.)
- Potassium Sources: Potassium sulfate or muriate of potash often supply this nutrient.
Bonus Ingredients
- Weed Killers (Weed and Feed): Some products include herbicides to kill weeds while feeding the grass. This saves you a step!
- Iron: Adding iron can give your grass a darker green colour quickly, even if the soil doesn’t need more nitrogen right away.
Factors That Improve or Reduce Quality
The quality of your fertiliser choice affects your lawn’s health. Good choices lead to strong grass. Poor choices can cause problems.
Quality Boosters
- Slow-Release Coating: High-quality fertilisers often use coatings on the nitrogen pellets. This coating controls how fast the food dissolves, providing consistent feeding.
- Micronutrients: Sometimes, grass needs tiny amounts of other elements like magnesium or zinc. Fertilisers that include these micronutrients offer complete nutrition.
Quality Reducers (Watch Outs!)
- High Salt Content: Some cheap fertilisers have high salt levels. If you use too much, these salts pull water out of the grass roots, which causes “fertiliser burn”—the grass turns brown and dies.
- Poor Granule Uniformity: If the granules in the bag are all different sizes, your lawn will have patchy growth—some spots too green, some spots missed entirely.
User Experience and Use Cases
How you plan to use the fertiliser matters greatly.
When to Apply
- Spring Start-Up: Use a balanced fertiliser high in nitrogen to kickstart growth after winter.
- Summer Maintenance: Choose a slow-release formula during hot weather. This prevents rapid growth that stresses the grass during heat waves.
- Fall Root Building: Use a fertiliser higher in Phosphorus (P) and Potassium (K) in the autumn. This strengthens the roots for the winter ahead.
Application Methods
- Spreader Use: Most granular fertilisers require a spreader (either broadcast or drop type) for even application. Read the bag instructions carefully to set your spreader correctly.
- Liquid Feed: Liquid fertilisers mix with water and spray on. They work very fast but require more frequent application. These are great for a quick colour boost.
10 Frequently Asked Questions (FAQ) About Lawn Fertiliser
Q: What is the best N-P-K ratio for general lawn feeding?
A: A good all-around ratio is one where the first number (Nitrogen) is the highest, such as 20-5-10. This promotes strong green growth.
Q: How often should I fertilise my lawn?
A: Most lawns benefit from fertilising three to four times per year: early spring, late spring, late summer, and fall. Always check your specific product instructions.
Q: Can I burn my grass with fertiliser?
A: Yes, you can burn your grass. This usually happens if you apply too much fertiliser at once, especially quick-release types, or if you apply it when the grass is very dry.
Q: What is the difference between granular and liquid fertiliser?
A: Granular fertiliser comes in tiny pellets you spread on the soil. Liquid fertiliser dissolves in water and is sprayed on. Granular lasts longer; liquid works faster.
Q: Do I need to water the fertiliser in after applying it?
A: Yes, always water the fertiliser in unless it rains soon after application. Watering helps the nutrients move from the surface into the soil where the roots can reach them.
Q: Does fertiliser kill weeds?
A: Only if you buy a “Weed and Feed” product. Standard fertiliser feeds only the grass; it does not kill broadleaf weeds.
Q: When is the worst time to fertilise?
A: Avoid heavy fertilising during the peak heat of summer, especially if you are using high-nitrogen products. This forces too much growth when the grass is already stressed by heat.
Q: Why does my fertiliser bag say “Use a Spreader”?
A: Using a spreader ensures you apply the correct, even amount across the entire lawn. Hand spreading often leads to stripes of too much and too little fertiliser.
Q: How long does slow-release fertiliser last?
A: Slow-release formulas typically feed the lawn effectively for six to twelve weeks, depending on the product and the amount of rainfall.
Q: Should I fertilise bare spots or new seed?
A: For new seed or bare spots, use a starter fertiliser. These products have higher Phosphorus (the middle number) to help those tiny roots get established quickly.