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Updated: 08 Oct 2025

10 Best Lawn Garden Organic Fertilizer

#1
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Scotts Handy Green Fertilizer Spreader

Brand: Scotts
$29.90
⭐ 4.4
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    The perfect spreader for small yards
  • It comes fully assembled, so you can begin treating your lawn immediately
  • You can use it to apply seed, fertilizer, ice melt, or other products on small areas
  • It is ergonomically designed to reduce wrist fatigue
  • Holds up to 1,000 sq. Ft of scotts lawn products
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#2
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Scotts Lawn Builder - Grub and Insect Slow Release Lawn Fertiliser 2.5kg - Suitable for All Types of Lawn Grass - Kills Weeds not Lawns

Brand: Osmocote
$26.90
⭐ 4.1
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    ADDED BIFENTHRIN is a low - toxicity insecticide effective against lawn pests
  • FEEDS THE LAWN and controls a range of common lawn pests
  • USE AGAINST a range of common lawn pests
  • BEST APPLIED in early Spring, early Summer and in Autumn
  • LAWN BUILDER + Grub & Insect Control is best applied in early spring, early summer and in autumn
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#3
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Charlie Carp Natural Pellet Fertiliser - Plant Fertiliser with 3 Months Slow Release Formula - Odourless All Purpose Garden Fertiliser and Plant Food for Indoor Plants and Gardens - 5kg

Brand: Charlie Carp
$24.60
⭐ 4.1
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    Slow Release Pellets - These pellets work by gradually adding fertiliser to the soil, providing your garden and indoor potted plants with the nutrition they need to thrive. Set and forget - scatter the pellets and there's no need to think about feeding your plants for the next 3 months.
  • Do Good For Your Garden - Charlie Carp pellets can be used for any situation, and are ideal as indoor plant food or as garden plant fertiliser. This all-purpose plant food can be used to improve moisture retention, encourage earthworms and improve overall soil health.
  • Macro and Micro - Rich in protein, these all-purpose fertiliser pellets act quickly and provide protein directly into the soil. Contains natural fish oil which also helps deter garden pests.
  • Environmentally Sustainable - Made from sustainably-sourced European carp - an invasive species that is destroying natural habitats - this garden fertiliser is a responsible choice and a good alternative to many of the chemical fertilisers available on the market.
  • No Odour - Charlie Carp contains none of the fishy, smelly compounds that other fertsilisers contain. Instead, this outdoor plant food is odourless and easy to use. Simply sprinkle a small handful wherever additional fertiliser is needed.
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#4
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Micro Cal - Granular Fine Lime 5 kg | Lime Fertiliser and Soil Amendment | Organic Garden Lime | Lime for Soil and Lawns | Soil Enhancer, Conditioner and Fertiliser

Brand: plantneeds
$32.99
⭐ 4.1
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    Soil Rejuvenation: Micro Cal effectively revitalizes depleted soils through remineralization, restoring essential nutrients and overall soil health.
  • Trace Element Enrichment: Micro Cal increases the levels of crucial trace elements, ensuring a well-rounded nutrient profile for optimal plant growth.
  • Enhanced Soil Carbon Levels: Micro Cal elevates soil carbon levels, improving energy, water, and nutrient-holding capacity for healthier, more productive plants.
  • Pest and Disease Resistance: By raising soil pH and enhancing plant immunity, Micro Cal helps plants and turf resist pests and diseases, ensuring long-term health.
  • Stimulated Growth: Micro Cal stimulates faster growth by increasing cell division, resulting in more robust plants.
  • Enhanced Nutrient Uptake: Micro Cal improves the nutrient uptake efficiency of plants, allowing them to utilize nutrients more effectively.
  • Strengthened Plant Immunity: Micro Cal fortifies plant immunity, making them more resilient to stress and diseases.
  • Increased Fertiliser Efficiency: With Micro Cal, fertilisers become more efficient, improving nutrient transportation in the soil and ensuring maximum utilization of applied fertilisers.
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#5
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Brunnings All Purpose NPK Fertiliser 3 kg

Brand: Brunnings
$16.00
⭐ 4.1
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    Ideal for use on indoor and outdoor potted plants and most garden applications
  • Contains both slow release and fast acting ingredients for quick results and extended feeding
  • Non-acidifying formulation does not alter pH of soils
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#6
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Fish N Phos - Liquid Fish Emulsion Fertiliser 2 L (NPK 8-2-2) | Australian Certified Organic | All-Purpose Organic Nitrogen Fertiliser for Lawns, Turfs, Gardens, and Pastures

Brand: plantneeds
$23.79
⭐ 4.1
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    Certified Organic: Australian Certified Input for Organic Gardens (ACO Cert. No. 11638), ensuring the highest organic standards.
  • Potent NPK Formula: Delivers essential nitrogen (8%), phosphorus (2%), and potassium (2%) for healthy gardens, lawns, and vegetable patches.
  • Ideal for Gardeners: Supports lush growth for both home and market gardeners, perfect for fruits, vegetables, and lawns.
  • Eco-Friendly: Made from upcycled fish using enzymatic processes, free from harmful chemicals, and environmentally safe.
  • Boosts Plant Vitality: Packed with NPK, trace elements, proteins, and vitamins, promoting vigorous plant growth and soil health.
  • Supports Soil Microbes: Nourishes beneficial soil microbes and earthworms, enhancing soil fertility.
  • Safe for the Environment: Leaves no harmful residues and is safe for sensitive water catchment areas.
  • Turf & Lawn Care: Promotes lush green growth for healthy lawns and turf.
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#7
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Grow N Save 2.5 kg Granular - 100% Neem Cake Organic Fertiliser | Australian Certified Organic | Garden Fertiliser and Soil Conditioner | Natural Indoor Plant Slow Release Fertiliser

Brand: plantneeds
$18.75
⭐ 4.8
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    Australian Certified Organic (ACO registered).
  • Pure Neem Power: Utilizes pure Neem Cake for plant health and soil vitality - ideal for organic gardens.
  • Comprehensive Plant Care: More than fertilizer; it shields plants, enriches soil, nurtures microflora - a true plant companion.
  • Soil Guardian: Maintains soil moisture, enhances biology - an effective soil conditioner.
  • Naturally Rich Nutrients: Packed with plant nutrients, perfect for indoor and outdoor plants, lawns, and gardens.
  • Outdoor Excellence: A must for outdoor spaces, a superior garden fertilizer and soil conditioner.
  • Indoor Plant Partner: Perfect for indoor plants, enriching and protecting your greenery.
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#8
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Scotts Lawn Builder - Premium Slow Release Lawn Fertiliser 2.5kg - 3 Months Feed - Thicker Lawn with No Scorch Formula - Child and Pet Friendly

Brand: Osmocote
$22.00
⭐ 4.7
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    ACTS QUICKLY because its nitrogen is highly soluble and available to grasses immediately after application and watering in. It also contains boosted iron and magnesium levels to feed and green your lawn
  • SLOW-RELEASE of nutrients eliminates waste through run-off and leaching and prevents burning
  • TRADITIONAL LAWN foods release ('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 Builder uses patented time-release technology to ensure nutrients are released slowly and continuously over a three month period
  • PREMIUM is phosphorus-free, which means it can be safely used anywhere in Australia without posing any risk to ground or surface water
  • PREMIUM has a recommended application rate of just 16 grams per square metre, not the kilograms often associated with traditional lawn foods! One bag of Premium is equal to three or more bags of traditional fertiliser of the same weight
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#9
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Charlie Carp Certified Organic Fertiliser, 1L - Concentrated Formula Makes up to 300L All-Purpose Liquid Fertiliser - Garden and Fruit Tree Fertiliser

Brand: Charlie Carp
$12.59
⭐ 4.4
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    Improve Plant Growth - Charlie Carp organic fish fertiliser contains added seaweed extract for soil and plant health. Suitable for all gardens, lawns and veggies - this is also an excellent fruit tree fertiliser.
  • 1 Litre makes up to 300 litres - This super-concentrated formula will produce 300 litres of fertiliser when watered-down correctly. Simply connect to your garden hose for instant plant feed!
  • Indoor or Outdoor - Use this liquid fertiliser for garden plants, including citrus, tomatoes and banana trees. Can also be used with house plants and other potted shrubs and outdoor plants.
  • Improved Soil Structure - Give your plants the nutrition they need and be rewarded with more fruit, and benefit from improved soil structure. The seaweed extract acts as a soil tonic, improving the quality of your soil.
  • Play Your Part - This liquid fertiliser is made from European Carp which is the most invasive and destructive fresh water fish in the world, destroying river systems and displacing native fish. Turn something negative into a positive by using this garden fertiliser.
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#10
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Searles 5 in 1 Organic Fertiliser Pellets 2.5 kg

Brand: Searles
$10.98
⭐ 4.7
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    Premium high nutrient organic fertiliser
  • Promotes strong healthy plant growth, brilliant blooms and rich, healthy fruit and vegetables
  • Unique blend of premium grade natural ingredients for superior results
  • Adds long life humus build up to the soil, encouraging healthy microbial and earthworm activity
  • BFA Registered 100% organic and natural
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