Product Description

The Missing Link for Healthy Soil & Thriving Plants

Name: Fulvic Acid Liquid - A Powerful Bio-Stimulant
Brand: Plant Doctor

A cost-effective, premium fulvic acid formula trusted by hydroponic and professional growers across Victoria, Queensland, and NSW.

Fulvic acid is a natural, powerful nutrient booster that delivers immediate nourishment to both plants and the essential microbes in your soil. It promotes strong root growth, unlocks vital nutrients locked in the soil, and helps plants resist disease and stress, making it one of the most valuable inputs for creating balanced, fertile soil and vigorous plants.

Why use Fulvic Acid

Boost nutrient absorption for healthier, faster-growing plants
Control root rot diseases like Pythium under certain conditions
Increase uptake of foliar fertilisers, herbicides, and pesticides
Stimulate root development and improve access to soil nutrients
Improve soil moisture retention and water use efficiency
Detoxify harmful soil pollutants, including heavy metals and chemical residues
Stabilise nitrogen fertilisers like urea for longer-lasting effects
Strengthen plant immunity and increase yield potential

Where to use Fulvic Acid:

Lawns (Buffalo, Couch, Kikuyu & More)

Enhance grass root growth and nutrient absorption
Promote lush, green, drought-resistant lawns
Improve recovery from stress, wear, and disease
Compatible with popular grass types like buffalo, kikuyu, and couch

Gardens (Veggies, Flowers, Trees, Pots)

Boost nutrient uptake in garden beds, pots, and lawns
Improve seed germination and root development
Support soil microbes that break down organic matter
Help plants resist stress and disease by improving nutrient availability

Farms & Larger Properties

Chelate soil minerals, making nutrients more accessible
Detoxify soil from pesticide, herbicide, and heavy metal residues
Stabilise nitrogen fertilisers like urea for longer-lasting effects
Improve soil fertility in areas with low organic carbon
Compatible with acidic or alkaline soils and a wide range of fertilisers

Fulvic acid is compatible with most liquid fertilisers, soil conditioners, and foliar sprays, making it a versatile addition to your plant nutrition program. It works best when used as part of a balanced feeding routine to enhance nutrient availability and overall plant health. This product is suitable for a wide range of growing systems, including hydroponics, soil-based gardens, and broadacre agricultural applications. To ensure optimal results and avoid any compatibility issues, always perform a small trial when introducing fulvic acid alongside new products or application methods.

The Science Behind Fulvic Acid

Fulvic acid is a naturally occurring organic acid formed from the decomposition of plant and microbial matter. Its unique small molecular structure allows it to:

Act as a powerful chelating agent, dissolving minerals and trace elements so plants can readily absorb them
Rapidly enter plant membranes (often within 4 hours), delivering nutrients efficiently
Enhance photosynthesis by increasing stomatal opening, especially helpful in cloudy or low-light conditions
Promote beneficial soil microbial activity, improving nutrient cycling and soil health
Detoxify soils by binding to pollutants like pesticides, herbicides, and heavy metals, reducing their toxicity
Stabilise urea and other nitrogen fertilisers when applied to soil, reducing nutrient losses
Stimulate root growth, cell elongation, and division, contributing to stronger, healthier plants

Often called the ‘missing link’ in plant nutrition, fulvic acid supports soil and plant systems in ways that other fertilisers cannot.

Product Summary	Details
Type	Natural Fulvic Acid Liquid
Function	Soil nutrient chelator & microbial stimulant
Compatibility	Acidic & alkaline fertilisers and soil types
Best For	Low organic carbon soils, hydroponics, farms, gardens
Origin	Naturally derived, sustainably sourced

Fulvic acid is the key to unlocking soil nutrients and promoting plant vitality. Whether you're a hobby gardener or commercial grower, incorporating this powerful natural chelator into your fertiliser program helps ensure your plants get the nutrition they need to thrive — healthier roots, stronger growth, and improved resilience to stress.

Safety Guidelines

Keep out of reach of children. Non-toxic and safe for plants, animals, and the environment. Store in a cool, dry place, away from direct sunlight.

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Product Application

Application Rates

Can be used at any time of the year on all soil types which grow plants; turf, lawns, golf greens, all home garden plants, sandy and clay soils, pot plants, vegetables, and fruit trees.

Application Method	Mixture/Rate
Hydroponics	1800ml to 1000 Litres of water
Foliar (Turf)	1450ml to 1000 Litres of water, fine mist until run off
Foliar (Vineyard)	2000ml to 1000 Litres of water, fine mist until run off
Broad Acre	3900ml to 1000 Litres of water per hectare via boom spray
Home Garden	15ml per watering can
Dilution Rate	1450-2000ml/1000 litres
	Apply weekly or fortnightly, as required.

Fulvic Acid is compatible with most inputs, however always jar-test before mixing.

What is Fulvic Acid Liquid?

This is a powerful natural bio-stimulant made from high-grade fulvic acid. It helps improve nutrient uptake, stimulates microbial activity, and enhances plant health and stress resilience.

What are the benefits of using fulvic acid in liquid form?

Liquid fulvic acid is fast-acting and easy to apply. It enhances the uptake of nutrients already present in your soil or fertiliser, increases root development, and supports healthy microbial life.

Can Fulvic Acid Liquid be mixed with other products?

Yes. Fulvic acid acts as a natural chelator and improves compatibility with many fertilisers, herbicides, and stimulants. It is commonly tank-mixed. Always perform a jar test first.

How often should I apply this product?

It can be used regularly during the growing season. Frequency depends on plant type and condition. Check our Product Usage Guide for more detail.

Is this product suitable for organic gardening?

Yes. Our Fulvic Acid Liquid is made from naturally derived organic matter and is safe to use in organic and sustainable gardening systems.

Is fulvic acid safe for all plant types?

Absolutely. It’s safe and beneficial for all types of lawns, garden plants, vegetables, fruit trees, natives, and ornamentals.

How does this compare to humic acid?

Fulvic acid has a smaller molecular structure, making it more bioavailable. It works within the plant cell to improve nutrient absorption. Humic acid works more on improving soil structure. They work well together.

Can fulvic acid help during drought or plant stress?

Yes. Fulvic acid helps improve a plant’s resilience during drought, heat, and transplant shock. It aids in faster recovery by improving root function and nutrient flow.

Will fulvic acid help my lawn?

Yes. Fulvic acid can significantly improve lawn colour, thickness, and health when used alongside fertilisers and stimulants. It helps reduce nutrient loss and supports soil biology.

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Amount of Reviews: 13

Fulvic Acid

By: Julius on 4 April 2025

Excellent product for getting a healthy soil just smells so sweet just like your soil should.Very fast delivery and great price.Thank you Plant Doctor

Most affordable chelating agent

By: Lucas on 2 July 2024

Can't find other organic chelating agent that's cheaper than this

Another good addition to my garden

By: Dario on 7 May 2024

Wonderful to see the results! Every single product from here has been a massive game changer for the overall health in my garden.

Best Food for my indoor plants

By: Mary on 14 April 2023

During heat of summer, my plants suffered a lot, I purchased this and added to a normal seasol and it made a big difference to my plants. Now when my plants need a boost, I add a little bit more of this to my seaweed secret and it's just amazing results.

THIS IS WHAT IVE BEEN MISSING

By: Zac on 15 March 2023

THIS IS WHAT I'VE BEEN MISSING, the fulvic acid is a GAME CHANNGER, it has honestly completely changed my lawn, it was the missing link in my routine.

Folic acid liquid

By: Jason on 22 July 2022

Folic acid liquid great price, exceptional product..

Urea Stabiliser

By: Colin-John on 12 May 2022

I'm using this to stabilise urea in my lawn and reduce dog damage, looking forward to some great results.

Beat the lacking lawn

By: Aiden on 26 December 2021

Began using this product to give the lawn/soil the best nutrition i could and wow its worked a tread its over the standard plato and heading into stunning high class lawn.

Great product

By: Nick on 23 December 2021

Really notice the difference since using this product stops the wilt!!

Great additional mix to add on top ben sim mix

By: Anferny on 9 August 2021

Wasn't sure how at the start how this product would work on the lawn and vegetables garden. So decided to add about 25ml in each of my Ben sim mix. Can see great result in the rooting of the plant and lawn. So would definitely recommend to add this product in their range as well.

Good Price

By: Wasim on 23 March 2021

I went to my local Bunnings and the "horticulturist" didn't know what fulvic acid is. I found it on the Plant Doctor website with good pricing, so I decided to buy in bulk. 20L is a lot more than I thought but I have a recipe for mixing it with seaweed and other things for an overall good fertiliser. Quick delivery, seamsless transaction, good price.

Amazing foliar spray!

By: Ken on 3 July 2020

First time using Fulvic from plant doctor, mixed 2ml to 1L into pressure spray, applied on lettuce and tomatoes leaves. Next day you can see noticeable greener leaves especially on the tomatoes. Definitely worth getting! The 1L will last me but I'm definitely going for the larger bottle in spring for my garden.

Ben Sims secret mix

By: Alec Burich on 11 April 2020

I have 220sm of lawn in three sections. Although regularly mowed there was still room for improvement. Checked online and seen lawn tips by Ben Sims. Couldn’t stop talking about liquid organics from plant doctor. His lawn was looking pretty smick and had gone through several renovations. The products he was using which I purchased through plant doctor, has drastically changed the appearance of my lawn. Sims secret mix from plant doctor, consisting of quantum H, Seaweed Secrets, Activate8mate, Liquid Iron and Stimulizer . These products bond the nutrients in the soil, green up the lawn and root plant growth, strength. Yep the lawn looks a million dollars since I’ve been using these products. I’d say I would be purchasing more of these products in the future.

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!

Fulvic Acid - 1L

Liquid powerful bio stimulant

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