Bulk Liquid Fertilisers for Farming, Turf and Green Spaces – Sustainable Fertiliser Solutions

At Plant Doctor, we supply a full range of high-quality bulk liquid fertilisers trusted by farms, commercial growers, horticultural operations, landscapers, turf managers, councils and sports field professionals across Australia. Our formulations are designed to strengthen

At Plant Doctor, we supply a full range of high-quality bulk liquid fertilisers trusted by farms, commercial growers, horticultural operations, landscapers, turf managers, councils and sports field professionals across Australia. Our formulations are designed to strengthen soil health, improve plant vitality and support sustainable land management at any scale. Whether your priority is boosting nutrient availability, improving soil structure or achieving more consistent growth and yields, our bulk liquid fertilisers deliver reliable, cost-effective performance for every type of operation.

High-Quality Bulk Liquid Fertilisers for Agriculture, Turf and Landscape Management: Plant Doctor’s bulk liquid fertilisers provide essential nutrients in a readily available form, helping plants establish stronger roots and more resilient growth. These products are suitable for broadacre farming, horticulture, turf renovation, amenity landscapes, nurseries and large-scale green spaces. Each formulation is developed to support healthier soils and more productive plants regardless of site conditions or operational size.

Sustainable Fertiliser Solutions for Responsible Land Management: Sustainability is a core focus at Plant Doctor. Our bulk liquid fertilisers are produced with natural ingredients wherever possible to encourage long-term soil fertility while reducing reliance on harsh synthetic inputs. The formulations are engineered to support nutrient cycling, minimise leaching and run-off and improve soil biology. This creates healthier, more productive growing environments for farms, parks, sports fields and landscaped areas.

Cost-Effective Options for Large-Scale Operations: We understand the importance of operational efficiency. Our concentrated liquid formulations are easy to apply and help reduce input costs while improving plant performance. With strong nutrient density and excellent uptake, Plant Doctor products offer reliable value for broadacre farms, turf contractors, nurseries, councils and commercial landscape managers looking to stretch their budgets without compromising on quality.

Why Choose Plant Doctor Bulk Liquid Fertilisers: Plant Doctor’s liquid fertilisers deliver fast nutrient uptake and support strong plant response across a wide range of environments. The formulations improve soil structure, support microbial activity and enhance nutrient absorption. With the right balance of macro and micro elements, our fertilisers are designed to optimise soil potential and produce healthier, more resilient crops, turf and landscaped areas.

Our Range of Bulk Liquid Fertilisers: Explore our full selection of agricultural, horticultural and turf-focused liquid fertilisers. The range includes organic options, mineral blends and soil-enhancing liquid inputs formulated to improve overall soil health and plant performance. Each product is developed to deliver consistent results from initial soil conditioning through to peak growth.

Complementary Products for Complete Soil and Plant Management: Alongside our bulk liquid fertilisers, we supply soil conditioners, wetting agents, biostimulants and other soil health solutions that integrate seamlessly into existing programs. These products help improve water retention, nutrient efficiency and long-term soil structure, supporting better results across farming enterprises, urban landscapes and professional turf settings.

Supporting the Future of Agriculture, Turf and Environmental Management: Plant Doctor is committed to supporting better outcomes across all industries that rely on healthy soil and thriving plants. Our goal is to help growers, land managers and turf professionals build more productive, sustainable systems that support future generations. We focus on delivering products that strengthen soil biology, improve plant resilience and reduce the long-term environmental impact of land management.

Ready to Improve Your Productivity and Plant Performance: Browse the full range of Plant Doctor bulk liquid fertilisers for agriculture, turf management, horticulture and commercial landscaping. If you require tailored advice or wish to place an order, our team is ready to assist. Together we can improve soil health, support stronger plant growth and create more sustainable outcomes for your operation.

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Quantum H | Liquid Humic Acid | Bulk 1000L IBC | Frees locked-up soil | Rates from 6 L per hectare

Quantum H | Liquid Humic Acid | Bulk 1000L IBC | Frees locked-up soil | Rates from 6 L per hectare

Humic + Fulvic Soil Concentrate Boosts Soil Function & Nutrient Uptake Fixes Tired, Locked-Up Soils
LawnsGardensFarms
$4,995.00

Seaweed Secrets | Liquid Seaweed | Bulk 200L Drum | Stress recovery and root growth for crops and turf

Seaweed Secrets | Liquid Seaweed | Bulk 200L Drum | Stress recovery and root growth for crops and turf

Seaweed + Humic + Fulvic Biostimulant Improves Stress Resistance & Root Growth Fixes Plant Stress & Slow Recovery
LawnsGardensFarms
$1,550.00

Activ8EXTRA | 16-2-5 | Nitrogen Liquid Fertiliser + Seaweed | Bulk 1000L IBC | Fast green-up and growth

Activ8EXTRA | 16-2-5 | Nitrogen Liquid Fertiliser + Seaweed | Bulk 1000L IBC | Fast green-up and growth

16-2-5 NPK + T/E & Seaweed Fast Green-Up & Growth Fixes Yellow, Weak Lawns
LawnsGardensFarms
$9,090.24

Out Of Stock
Activ8EXTRA | 16-2-5 | Nitrogen Liquid Fertiliser + Seaweed | Bulk 200L Drum | Fast green-up and growth

Activ8EXTRA | 16-2-5 | Nitrogen Liquid Fertiliser + Seaweed | Bulk 200L Drum | Fast green-up and growth

16-2-5 NPK + T/E & Seaweed Fast Green-Up & Growth Fixes Yellow, Weak Lawns
LawnsGardensFarms
$2,327.00

Out Of Stock
Activ8mate | 8-1-4 | Liquid Fertiliser Inoculant | Bulk 1000L IBC | Feeds soil microbes | Safe for sensitive sites

Activ8mate | 8-1-4 | Liquid Fertiliser Inoculant | Bulk 1000L IBC | Feeds soil microbes | Safe for sensitive sites

8-1-4 NPK + T/E Soil Activation Root & Recovery Support
LawnsGardensFarms
$6,350.00

Out Of Stock
Activ8mate | 8-1-4 | Liquid Fertiliser Inoculant | Bulk 200L Drum | Feeds soil microbes | Safe for sensitive sites

Activ8mate | 8-1-4 | Liquid Fertiliser Inoculant | Bulk 200L Drum | Feeds soil microbes | Safe for sensitive sites

8-1-4 NPK + T/E Soil Activation Root & Recovery Support
LawnsGardensFarms
$1,695.00

Out Of Stock
Agricultural Lime | Granules 1-2mm | Bulk Pallet 50 x 20kg | Raises soil pH and unlocks nutrients

Agricultural Lime | Granules 1-2mm | Bulk Pallet 50 x 20kg | Raises soil pH and unlocks nutrients

Calcium Carbonate (CaCO₃) Raises Soil pH & Nutrient Availability Fixes Acidic Soil Lockout
LawnsGardensFarms
$2,750.00

Out Of Stock
Champion Lawn & Fairway | 15-3-9 | Granular Slow Release Fertiliser | Bulk Pallet 50 x 20kg

Champion Lawn & Fairway | 15-3-9 | Granular Slow Release Fertiliser | Bulk Pallet 50 x 20kg

15-3-9 NPK + Minerals Sustained Lawn Health & Colour Fixes Patchy, Weak Turf Performance
Lawns
$3,800.00

Choose Options
Dolomite Granules | Mini Prill 1-2mm | Bulk Pallet 50 x 20kg | Corrects acid soil and low magnesium

Dolomite Granules | Mini Prill 1-2mm | Bulk Pallet 50 x 20kg | Corrects acid soil and low magnesium

Calcium Magnesium Carbonate (Dolomite) Balances pH & Replenishes Minerals Fixes Acidic Soil & Mg Deficiency
LawnsGardensFarms
$2,750.00

Out Of Stock
Flowers, Fruits & Roots | 8-2-20 NPK with silica | Slow Release Granular Fertiliser | Bulk Pallet 50 x 20kg

Flowers, Fruits & Roots | 8-2-20 NPK with silica | Slow Release Granular Fertiliser | Bulk Pallet 50 x 20kg

8-2-20 NPK + T/E Flowering & Fruiting Boost Fixes Poor Flowering & Yield
GardensFarms
$4,295.00

Out Of Stock
Flowers, Fruits & Roots | 9-7-19 | Liquid High-potassium Fertiliser | Bulk 1000L IBC | Fast-acting for yield and bloom

Flowers, Fruits & Roots | 9-7-19 | Liquid High-potassium Fertiliser | Bulk 1000L IBC | Fast-acting for yield and bloom

9-7-19 NPK Fast Flowering & Fruit Set Fixes Poor Yield & Weak Blooming
GardensFarms
$10,975.00

Out Of Stock
Flowers, Fruits & Roots | 9-7-19 | Liquid High-potassium Fertiliser | Bulk 200L Drum | Fast-acting for yield and bloom

Flowers, Fruits & Roots | 9-7-19 | Liquid High-potassium Fertiliser | Bulk 200L Drum | Fast-acting for yield and bloom

9-7-19 NPK Fast Flowering & Fruit Set Fixes Poor Yield & Weak Blooming
GardensFarms
$2,750.00

Out Of Stock
Fulvic Acid |  Liquid Biostimulant | Bulk 1000L IBC | Chelates nutrients for better uptake in crops and turf

Fulvic Acid | Liquid Biostimulant | Bulk 1000L IBC | Chelates nutrients for better uptake in crops and turf

Fulvic Acid Chelating Agent Boosts Nutrient Uptake Fixes Locked Nutrients & Poor Response
LawnsGardensFarms
$4,563.00

Out Of Stock
Fulvic Acid |  Liquid Biostimulant | Bulk 200L Drum | Chelates nutrients for better uptake in crops and turf

Fulvic Acid | Liquid Biostimulant | Bulk 200L Drum | Chelates nutrients for better uptake in crops and turf

Fulvic Acid Chelating Agent Boosts Nutrient Uptake Fixes Locked Nutrients & Poor Response
LawnsGardensFarms
$1,550.00

Out Of Stock
Gypsum Granules | 1-2mm Mini Prill | Bulk Pallet 50 x 20kg | Calcium and sulphur to open up clay and compacted soil

Gypsum Granules | 1-2mm Mini Prill | Bulk Pallet 50 x 20kg | Calcium and sulphur to open up clay and compacted soil

Calcium Sulphate (Ca + S) Improves Soil Structure & Drainage Fixes Clay & Compacted Soil
LawnsGardensFarms
$2,750.00

Out Of Stock
Lawn Envy | Liquid Fertiliser & Lawn Tonic | Bulk 1000L IBC | NPK, Iron, seaweed and soil wetter in one product

Lawn Envy | Liquid Fertiliser & Lawn Tonic | Bulk 1000L IBC | NPK, Iron, seaweed and soil wetter in one product

8-1-3 NPK + Iron All-In-One Lawn Solution Fixes Dull, Patchy Lawns
LawnsGardensFarms
$9,450.00

Out Of Stock
Lawn Envy | Liquid Fertiliser & Lawn Tonic | Bulk 200L Drum | NPK, Iron, seaweed and soil wetter in one product

Lawn Envy | Liquid Fertiliser & Lawn Tonic | Bulk 200L Drum | NPK, Iron, seaweed and soil wetter in one product

16-1-5 NPK + Iron All-In-One Lawn Solution Fixes Dull, Patchy Lawns
LawnsGardensFarms
$2,385.00

Out Of Stock
Liquid Iron Fertiliser for Turf & Crops | Bulk 1000L IBC | 7% Fe + 3% S. Rapid green-up for yellowing plants

Liquid Iron Fertiliser for Turf & Crops | Bulk 1000L IBC | 7% Fe + 3% S. Rapid green-up for yellowing plants

7% Fe + 3% S Rapid Green-Up Fixes Yellowing & Iron Deficiency
LawnsGardensFarms
$4,563.00

Out Of Stock
Liquid Iron Fertiliser for Turf & Crops | Bulk 200L Drum | 7% Fe + 3% S. Rapid green-up for yellowing plants

Liquid Iron Fertiliser for Turf & Crops | Bulk 200L Drum | 7% Fe + 3% S. Rapid green-up for yellowing plants

7% Fe + 3% S Rapid Green-Up Fixes Yellowing & Iron Deficiency
LawnsGardensFarms
$1,550.00

Out Of Stock
MaxGreen | High Nitrogen and Iron Liquid Fertiliser | Bulk 1000L IBC | 16% N + 5% Fe + 2% S | Fast fix for yellow turf

MaxGreen | High Nitrogen and Iron Liquid Fertiliser | Bulk 1000L IBC | 16% N + 5% Fe + 2% S | Fast fix for yellow turf

16-5-2 NPK + Iron Fast Green-Up & Colour Boost Fixes Yellow, Weak Lawns
LawnsGardensFarms
$8,728.29

Out Of Stock
MaxGreen | High Nitrogen and Iron Liquid Fertiliser | Bulk 200L Drum | 16% N + 5% Fe + 2% S | Fast fix for yellow turf

MaxGreen | High Nitrogen and Iron Liquid Fertiliser | Bulk 200L Drum | 16% N + 5% Fe + 2% S | Fast fix for yellow turf

16-5-2 NPK + Iron Fast Green-Up & Colour Boost Fixes Yellow, Weak Lawns
LawnsGardensFarms
$2,327.00

Out Of Stock
Nature’s Soil Wetter | Liquid Wetting Agent | Bulk 1000L IBC | Plant-derived humate formula | No petrochemicals

Nature’s Soil Wetter | Liquid Wetting Agent | Bulk 1000L IBC | Plant-derived humate formula | No petrochemicals

Natural Soil Wetting Agent Improves Water Penetration & Retention Fixes Dry Patches & Run-Off
LawnsGardensFarms
$4,563.00

Out Of Stock
Nature’s Soil Wetter | Liquid Wetting Agent | Bulk 200L Drum | Plant-derived humate formula | No petrochemicals

Nature’s Soil Wetter | Liquid Wetting Agent | Bulk 200L Drum | Plant-derived humate formula | No petrochemicals

Natural Soil Wetting Agent Improves Water Penetration & Retention Fixes Dry Patches & Run-Off
LawnsGardensFarms
$1,550.00

Out Of Stock
Quantum H | Liquid Humic Acid | Bulk 200L Drum | Frees locked-up soil | Rates from 6 L per hectare

Quantum H | Liquid Humic Acid | Bulk 200L Drum | Frees locked-up soil | Rates from 6 L per hectare

Humic + Fulvic Soil Concentrate Boosts Soil Function & Nutrient Uptake Fixes Tired, Locked-Up Soils
LawnsGardensFarms
$1,650.00

Out Of Stock

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Customer Reviews

First time owning lawn. Gave the team at plant doctor a ring and they supplied me with a wealth of information. Products turned up quickly.

Will definitely be getting more 8 weeks difference been using stimulizer, activ8mate, soil wetter, seaweed secrets and champion fertiliser. Was super fast delivery.

Only have great things to say about Plant Doctor. Organic products and a competitive price, fast shipping and easy to contact with questions. Have had great results with the special mix for lawns, and my plants (indoor and outdoor) love the seaweed secrets. I am excited to test out some of the animal products soon!