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  • Professional Bulk Liquid Fertilisers for Farming, Turf and Green Spaces
  • Seaweed Secrets - 200L
Seaweed Secrets - 200L

Seaweed Secrets - 200L

MADE TO ORDER

Seaweed Secrets is a concentrated liquid seaweed fertiliser and soil conditioner enriched with humic and fulvic acids. It promotes stronger roots, healthier growth, improved nutrient uptake and greater resilience to environmental stress for lawns, gardens
Seaweed + Humic + Fulvic Biostimulant Improves Stress Resistance & Root Growth Fixes Plant Stress & Slow Recovery
Lawns Gardens Farms
$1,550.00
In Stock
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Please call the office to order. Note: This item is 200L in a barrel. Forklift delivery for a pallet is required and is available for commercial premises only. Made to order – please allow 2 weeks for dispatch. Cannot be delivered to residential zones.

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  • Description
  • Features
  • How it Works
  • Application
  • Safety
  • FAQ
  • Reviews
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Description

Commercial 200 L & 1000 L IBC Formats for Professional Turf, Horticulture & Broadacre Use

Seaweed Secrets is a high-performance liquid soil conditioner formulated for commercial growers, turf managers, nurseries, and broadacre operations seeking reliable, economical biological support at scale. Made from premium Ascophyllum nodosum kelp and enhanced with humic and fulvic acids, it delivers a consistent supply of bioactive compounds that improve soil function, strengthen plant resilience, and increase nutrient efficiency across all production systems. Designed for large-scale fertigation, boom spraying, and turf care programs, Seaweed Secrets provides a dependable biological foundation that supports faster establishment, stronger rooting, and improved quality in both soil- and substrate-based production.

Moved from more expensive products to seaweed secrets and getting the same results. Great value and ease of use is a bonus.
— Jason

Seaweed Secrets is more than just a fertiliser, it’s a soil conditioner that enhances the long-term health and fertility of your garden and lawn. By improving soil structure, increasing moisture retention, and supporting beneficial soil organisms, Seaweed Secrets creates an ideal environment for plants to thrive. 

Why commercial growers choose Seaweed Secrets:

  • High-analysis kelp extract for consistent, repeatable results in professional systems
  • Improves soil biology & microbial activity, increasing nutrient mineralisation
  • Enhances stress tolerance during heat, drought, salinity, frost, or transplant shock
  • Strengthens root growth and early establishment, ideal for turf, seedlings, and cropping
  • Boosts fertiliser efficiency via humic/fulvic chelation and increased nutrient uptake
  • Supports soil structure by improving moisture retention and aeration
  • Clean, low-odour, low-sludge formulation suitable for fertigation and spray systems
  • Safe for all crops, turf species, nursery stock and environmental areas
  • Made in Australia for Australian conditions 

Nutrient Profile: 

N
Nitrogen
0.04–0.07%
P
Phosphorus
0.05–0.15%
K
Potassium
2500–6000 ppm
S
Sulphur
400–1200 ppm
Mg
Magnesium
<0.40%
Ca
Calcium
<0.01%
B
Boron
0.13%
Fe
Iron
<0.10%
Zn
Zinc
1–5 ppm
pH
Soil pH
8–9

 ...

  • Contains naturally derived macro, secondary & trace elements
  • Rich in kelp-derived bioactive compounds and plant growth stimulants
  • Designed to enhance nutrient uptake and plant performance, not replace fertiliser

Seaweed Secrets delivers a reliable, scalable and cost-efficient biological input for professional growers, turf managers and agricultural operations. Its combination of kelp, humic and fulvic acids provides consistent improvements in soil function, root development and plant performance, making it a core component in modern, biologically focused fertility programs.

(SWS_BARR)

Features

Benefits of using Seaweed Secrets commercially:

Nutrient-Rich Formula

Seaweed, specifically Ascophyllum nodosum, is packed with 77 minerals, 17 amino acids, complex sugars, and chelating agents. Combined with high-quality Humic and Fulvic Acid, this nutrient-rich solution boosts soil health, helping plants thrive. Kelp is a vital soil enrichment product that promotes healthy plant development, making it ideal for lawns, trees, and garden plants.

Improved Soil Health

Seaweed improves soil structure and fertility by enhancing moisture retention, aeration, and drainage. This leads to healthier root systems and better nutrient uptake, fostering stronger plants.

Enhanced Plant Growth

The growth-promoting hormones in liquid seaweed stimulate plant growth, resulting in increased leaf and stem growth, improved flowering and fruiting, and overall plant vigour. It helps boost plant development, making it an essential addition to any garden or lawn care program.

Stress Tolerance

Seaweed extracts contain natural compounds that help plants endure environmental stresses, including drought, heat, cold, and disease. These compounds boost plant resilience, helping them recover from adverse conditions and thrive.

Increased Nutrient Absorption

Seaweed's organic compounds act as chelating agents, improving the availability and absorption of nutrients, ensuring your plants get the maximum benefit from the soil. This leads to more productive and healthier plants.

Disease & Pest Resistance

Seaweed extracts enhance the plant’s natural defences, making them more resistant to diseases and pests. It helps reduce the need for chemical pesticides and fungicides, promoting a more eco-friendly approach to plant care.

Environmental Sustainability

Liquid seaweed is a sustainable, eco-friendly fertiliser derived from renewable marine resources. It does not contribute to water pollution and helps maintain beneficial soil organisms, making it a safe and responsible choice for your lawn and garden. 

Safe for Humans and Pets

Seaweed extracts are non-toxic and safe to use around humans and pets. There is no need for protective clothing or equipment when applying, making it a user-friendly solution for your garden care needs. 

How it Works

The Science Behind Seaweed Secrets:

Seaweed Secrets is based on the combined action of cold-processed kelp extract, humic acid, and fulvic acid, acting as natural biostimulants and nutrient chelators. It works by:

  • Stimulating root zone microbes to convert bound nutrients into plant-available forms
  • Improving Cation Exchange Capacity (CEC) in the soil, aiding nutrient retention
  • Enhancing stress tolerance through cytokinin and auxin compounds naturally found in seaweed
  • Supporting nutrient absorption across a wide pH range
  • Strengthening plants’ natural defence mechanisms, reducing reliance on synthetic pesticides

Application

  Specific Use Rate Frequency Notes
General: Lawn and Garden: 100ml/100m2    
Home Gardener: General: 1ml per 1sqm
100ml per 100sqm
Apply fortnightly or as required.  
Broadacre: General:

6 - 10 Litres per hectare in enough water to provide thorough coverage or 1000 litres of water,

With Nutrients: Add 2-4 litres per hectare mixed with the liquid nutrients. Add to a partially filled tank. Include with every application.

Reapply 2-6 times during the growing season. It may be water run, side dressed, mixed with soil applied with liquid nutrients, or sprayed directly on the soil.
Sprinkler or Drip Irrigation: General:

Smaller amounts may be applied in every irrigation instead of only one application.

 

  Not corrosive to pipes or nozzles and will not plug them.
Transplanting or Cutting: General Mix 4 litres per 750 litres of solution.   Mix well before use.
Agricultural Specific Recommendations: Vegetables: 600ml per 100L water Apply every 2 weeks or as required.  
Orchards & Vineyards: 600ml per 100L water Apply every 4 weeks or as required.  
Ornamentals & Turf: 600ml per 100L water Apply every 4 weeks or as required.  
Pasture: 1-3L/ha in 60-100L water Apply as required.  
Broadacre Crops: 0.6-2L/ha in 60-100L water Apply as required, depending on canopy closure.  
Spot-Spraying: 35ml per 10L water Apply as required.  
Fertigation Vegetables:
 
6 - 10L/ha Apply every 2 weeks or as required.  
Orchards, Vineyards, Ornamentals & Turf: 6 - 10L/ha Apply every 4 weeks or as required.  
General Plants Indoor and Outdoor 2.0ml/ Every 3-4 weeks  
Vegetables & Annuals: 2.5ml Weekly  
Established Lawns: 8.0ml Every 2-4 weeks  
New Lawns: 5.0ml Weekly  
New/transplanted Plants: 2.0ml Weekly  
Trees: 8.0ml Every 4 weeks  

 

Note: Can be applied to the soil or foliar, if applying to foliage, check for staining prior, if concerned. 

Download Application Rates Document

 

Safety

Safety Guidelines

Keep out of reach of children. May be harmful if swallowed. If eaten seek medical help. ALWAYS TRIAL BEFORE CHANGE. Before a new rate, product or application method is used, a small trial is recommended. Warranty of this material, either expressed or implied, is limited to a guarantee of the composition as shown on this label in as much as uses are beyond the seller’s control. For the same reason, the seller is not liable for any injury to any living thing, crops, soils, or materials which may result from the use or storage of this material. As this is largely a mineral-based fertiliser made from natural resources, the analysis may change slightly.

NOTE: not compatible with iron-based products

FAQ

How soon after applying Seaweed Secrets can commercial turf be mown?

Allow 8–12 hours before mowing to ensure full foliar absorption across large turf areas.

Should mowing occur before or after applying Seaweed Secrets?

Apply after mowing to maximise leaf contact and overall efficiency, especially for broadacre turf.

How often should Seaweed Secrets be applied at commercial scale?

Apply every 2–4 weeks, or weekly during stress, recovery, or peak growth periods.

What is the recommended application rate for Seaweed Secrets?

Rates vary by sector. Refer to the commercial rate guide for turf, agriculture, nurseries, and horticulture.

Which application method is recommended for large-scale use?

Compatible with boom sprayers, fertigation systems, backpack sprayers, and hose-end equipment. Light watering-in is recommended if applying by pressure spray.

Can Seaweed Secrets be used on all turf varieties?

Yes. Safe for all warm- and cool-season grasses including couch, buffalo, kikuyu, zoysia, rye, and bentgrass.

What benefits does Seaweed Secrets provide for commercial turf and crops?

It supports root growth, stress tolerance, microbial activity, moisture efficiency, and uniform colour across high-use and production settings.

Can Seaweed Secrets be used during summer?

Yes. Ideal for use during heat, drought, high traffic, and recovery phases.

Is Seaweed Secrets organic?

It is naturally derived from cold-processed Ascophyllum nodosum. Not certified organic but fully natural and environmentally safe.

Can Seaweed Secrets be tank-mixed with other fertilisers?

Yes. Compatible with most fertilisers and biologicals. Conduct a jar test before large-scale mixing.

Is Seaweed Secrets safe for pets and kids?

Yes. Once dry, treated turf or crops are safe for workers, public access, pets, and wildlife.

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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.

Billy Green

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

Michael Preddy

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!

Tim McAuliffe

Plant Doctor

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