Snad remedy for hydrophbic soil
all purpose fertiliser
Snad remedy for hydrophbic soil
showing you how our Coastal Cure can help with hydrophobic soil
all purpose fertiliser

Coastal Cure - Sand Remedy permanent fix for hydrophobic soils

$94.00
Free Organic Gardening Course with any online purchase

10kg treats up to 10 sqm

Permanent fix for hydrophobic soils

Is your soil sandy, dry and repelling water no matter how much you water? Coastal Cure converts problem sand into living soil — permanently. Unlike liquid wetting agents that wash away, this is a one-time structural fix that bonds with your soil particles and stays.

  • Creates a matrix that holds water and nutrients exactly where plant roots need them
  • Utilises leonardite to form strong permanent bonds with existing soil particles
  • Establishes microscopic reservoirs that improve soil structure long-term
  • Drastically reduces water consumption by improving moisture retention

Not a temporary fix — a permanent transformation. Apply once and your soil works differently from that day forward.

Read our Blog on Hydrophobic Soil here  

NB: Garden Calculator does not include the Coastal Cure 

Coastal Cure 10kg
Cost per kg $9.40
Cost per 1 sqm between $4.70 and $9.40
Size
Quantity

What makes it different
Most wetting agents are liquid treatments that improve water penetration temporarily — they wash through and need reapplying. Coastal Cure works differently. Its leonardite base physically bonds with sand particles and restructures the soil at a microscopic level, creating permanent reservoirs that hold water and nutrients exactly where roots need them. Apply it once and your soil is fundamentally changed.

Why it works
Leonardite is a pre-coal material almost pure in carbon, very high in humic and fulvic acids. When incorporated into sandy soil it forms strong, lasting bonds with existing soil particles — building structure that improves water retention, enhances nutrient uptake efficiency and promotes stronger root development. The amorphous silica and bentonite clay work alongside it to further improve the soil matrix and moisture holding capacity. Environmentally friendly, sustainable and simple to apply.

Ingredients
Leonardite — pulverised pre-coal material, very high in humic and fulvic acids, almost pure carbon. Stimulates microbial activity and bonds permanently with soil particles.
Amorphous Silica — improves soil matrix and moisture holding capacity.
Bentonite Clay — high cation exchange capacity, holds water and builds structure.
Certified organic by Southern Cross.

Best paired with
Coastal Cure does the permanent structural work. Follow up with Jurassic Juice as your ongoing seasonal maintenance — keeping your soil microbiome active and continuing to unlock nutrients in your newly transformed soil.

Coastal Cure must be dug or incorporated into the soil — not top dressed. It needs direct contact with soil particles to form its permanent bonds.

When to apply
Before lawn installation or at lawn coring, when preparing new garden beds, and mixed into the planting hole for trees and shrubs. Can also be incorporated into existing garden beds when digging over or replanting.

How to apply
Incorporate into the top 100–200 mm of soil. Water in well after application.

Application rates
General sandy soils — 500 g to 1 kg per m²
Severe hydrophobic sand — 2 to 3 kg per m²
Pots & containers — 1–2 cups per 20 L of potting mix

Returns & Refund Policy

30-Day Money-Back Guarantee

At Soil Dynamics, we stand behind our products with a 30-day money-back guarantee. If you're not seeing results with our products within 30 days of receipt, we'll refund your purchase with no questions asked.

We're committed to your success with our products. Before initiating a return, we encourage you to reach out to our team at hello@soildynamics.com.au for assistance. Our experts are here to help and may be able to provide guidance or solutions to help you achieve better results.

Standard Return Policy- change of mind

You have 30 days from receipt of your order to initiate a return. To be eligible for a return, your items must be:

  • In the same condition as received
  • Unopened and unused
  • In original packaging with all tags attached
  • Accompanied by the original receipt or proof of purchase

Return Process

  1. Contact us at hello@soildynamics.com.au to request a return authorization
  2. Once approved, send your return to: Quickmail c/o Soil Dynamics 1714 Albany Highway Kenwick WA 6107

Items sent without prior return authorization will not be accepted.

Return Shipping

For returns due to change of mind, while we're happy to accept unopened products within the 30-day window, the cost of return shipping will be the responsibility of the customer.

Non-Returnable Items

The following items cannot be returned:

  • Custom products
  • Special orders
  • Personalized items
  • Sale items
  • Gift cards

Damages and Defects

Please inspect your order upon receipt and contact us immediately at hello@soildynamics.com.au if:

  • The item is damaged  supported by picture evidence
  • You received the wrong item

We will evaluate the issue and work to resolve it promptly.

Exchange Process

For the fastest resolution, we recommend:

  1. Return your original item following our return process
  2. Place a new order for your desired item once the return is accepted

Refund Process

  1. We will notify you once we receive and inspect your return
  2. If approved, refunds will be processed automatically to your original payment method
  3. Refunds typically appear in your account within 10 business days
  4. Please allow additional time for your bank or credit card company to process the refund
  5. If you haven't received your refund after 15 business days from approval, please contact us at hello@soildynamics.com.au

For any questions about our return policy, please contact us at hello@soildynamics.com.au.

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Coastal Cure

Two images side by side: one of a shovel in sand and the other of dark soil with a worm.

Organic Coastal Cure soil amendment to fix hydrophobic soil long-term

Amends the Soil - turns sand into soil permanently

Transform your challenging sandy soils into fertile, water-retentive growing environments with Coastal Cure—the revolutionary organic solution specifically formulated to address hydrophobic sandy soil conditions.

Coastal Cure works with nature, not against it, by utilising leonardite (a natural carbon-rich material) that binds permanently to clay and silica particles in your soil. This creates a powerful matrix that:

  • Permanently fixes hydrophobic sandy soil conditions
  • Acts as a natural magnet for nutrients
  • Enhances the effectiveness of additional fertilisers and biostimulants
  • Promotes healthier root development and plant growth
  • Reduces water consumption by improving moisture retention
Coastal_Cure.png

Coastal Cure Organic Sand Amendment

Why the Name 'Coastal Cure' and not just Sand Amendment?

You know that feeling when you try to water sandy soil and it just runs right through? That frustrating cycle ends with Coastal Cure! This revolutionary solution is specifically named for its ability to permanently transform problematic coastal and sandy soils into rich, water-retentive growing environments. The name "Coastal Cure" reflects its specialised purpose - it's not just another soil additive, but a complete transformation system for sandy, hydrophobic conditions. When you apply Coastal Cure, you're not just amending your soil, you're giving it the ability to sustain vibrant plant life where it once couldn't, making it a true "cure" for coastal and sandy soil challenges!

Summary of The Difference with our Sand Amendment

  • It's not just a clay additive - it contains leonardite that permanently binds to clay and silica particles
  • Acts as a natural magnet for nutrients, fertilisers, and biostimulants when they're applied
  • Creates a lasting solution to hydrophobic soil conditions rather than temporary relief
  • Improves soil structure at the microscopic level, forming stable nutrient and water reservoirs
  • Enhances the effectiveness of all your other garden inputs

Our Organic Sand Amendment Is Perfect For:
Transforming hydrophobic sandy soils, coastal gardens, poor water-retention areas, drought-prone landscapes, rehabilitating poor-quality soils, and creating sustainable growing environments in challenging conditions

What is it, What does it do, How does it work?
It permanently fixes sandy hydrophobic soil conditions through natural binding processes

  • It creates a matrix that holds water and nutrients exactly where plants need them
  • It utilises leonardite to form strong bonds with existing soil particles
  • It establishes microscopic reservoirs that improve soil structure long-term
  • It works with nature's processes to transform soil composition permanently

What Are The Benefits Of Our Organic Sand Amendment, Coastal Cure?

  • Transforms your sandy soil permanently with each application
  • Drastically reduces water consumption by improving moisture retention
  • Enhances nutrient uptake efficiency in previously poor soil
  • Promotes stronger, healthier root development
  • Improves plant resilience in challenging conditions
  • Reduces fertiliser waste through better nutrient capture
  • Environmentally friendly and sustainable solution
  • Simple to apply with long-lasting results
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Frequently Asked Questions

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Our Promise

Our Nurture for Purpose Guarantee is designed for The Eco Enthusiast

  • You will have your garden thriving within 30 days.
  • Guaranteed for all our Home Garden products

OR

  • Upgrade the guarantee with our " Foundation Bundle " made of our 5 core products" starting at only $225.98 your complete soil health system if you do not get results book a call for a
  • Free 30-minute agronomy session normally retailing at $495 with one of WA’s most respected Organic Agronomist -Anthony Quinlan
  • If you are still not happy, we will give you a full refund, simply provide your receipt

Free Shipping

on all order $250+

Pet Friendly
Beneficial and safe for all plants
Aussie Made
Certified Organic