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  • Stimulizer - 1L
Stimulizer - 1L

Stimulizer - 1L

fulvic based with minerals and nutrients

$32.00
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Product Description

Ultra-Concentrated Fulvic Acid Bio-Stimulant & Natural Chelator

Unlock healthier soil, stronger roots, and bigger plant yields—naturally.

Super concentrate Bio-stimulant & natural chelating agent - with natural stimulants, minerals, and nutrients. Super concentrate, premium Fulvic acid-based product. A powerful bio-stimulant containing more than 75 minerals, humic acid extracts, and natural plant stimulants.

This unique formula, a ‘Trade Secret,’ was invented by Plant Doctor’s founder, Daniel Fitzhenry, with remarkable results. Stimulizer is widely used by hydroponics growers and professional growers across Australia and worldwide. It provides an immediately available form of food for plants and soil microbes, essential for healthy soil. Stimulizer effectively eliminates root rot diseases under certain conditions and stimulates root growth in a way that no other known product can. Compatible with both acidic and alkaline materials, Stimulizer is one of the most valuable inputs for creating a healthy, well-balanced soil environment for plants to thrive. Often referred to as the ‘missing link’ in plant nutrition.

Why Use Stimulizer?

  • Fights root rot & disease naturally
  • Accelerates root growth & nutrient absorption
  • Unlocks “locked-up” nutrients in soil
  • Boosts beneficial soil microbes & suppresses harmful ones
  • Improves water retention & reduces wilting
  • Enhances brix, yield, and resilience
  • Compatible with fertilisers, sprays, and all pH levels

 

           For Lawns & Turf (Buffalo, Couch, Kikuyu & More)           
  •       Apply via hose-on sprayer or watering can
  • Strengthens root zone and boosts drought tolerance
  • Ideal after topdressing, scarifying or stress recovery
  • Enhances colour and growth without excessive leaf stretch

Tip: Use with lawn fertiliser to increase uptake and reduce leaching.      

           For Home Gardens (Veggies, Flowers, Citrus & Herbs)           
  •       Mix into watering can or apply as a foliar spray
  • Improves flowering, fruiting, and overall vigour
  • Reduces plant stress and improves flavour (brix) in produce
  • Helps roots reach more water and nutrients, especially in poor soil

Ideal For: Pots, raised beds, garden beds, indoor plants      

           For Hydroponics & Controlled Environments           
  •       Supports sterile system health by reducing root rot
  • Stimulates nutrient uptake via foliar feeding or irrigation
  • Safe for pH fluctuations and mixes well with most additives
  • Boosts resilience during high-stress periods (low light, transplanting, temperature fluctuations)      

 

Used by hydroponic experts, landscapers, and commercial growers across Australia, Stimulizer is the secret weapon behind fast-rooting cuttings, rapid recovery after stress, and yield bumps that speak for themselves. It blends effortlessly into any garden or crop program and makes everything you apply—fertilisers, sprays, tonics—work harder and smarter. Once you try it, you’ll wonder how you ever grew without it.

The Science Behind Stimulizer

Stimulizer works through a unique combination of chelation, microbial stimulation, and cell signalling that improves plant and soil function from day one. Stimulizer functions as a highly bioavailable fulvic acid complex with a cation exchange capacity (CEC) of 1500—making it one of the most effective natural chelators available. Its low molecular weight allows rapid translocation of micronutrients through plant cell membranes, often within 4–6 hours of application. By stimulating root exudation and microbial colonisation in the rhizosphere, Stimulizer enhances enzymatic activity, nutrient cycling, and overall soil biofunction. The formulation also supports stomatal conductance and chloroplast activity, boosting photosynthetic efficiency even under abiotic stress such as cloud cover, salinity, or heat.

CEC
Chelation Capacity
1500+
FA
Fulvic Acid
High-grade
TM
Trace Minerals
75+ Occurring
HE
Humic Extracts
Ancient Organic
pH
Compatibility
Acid–Alkaline

 

 

 

Function Description
Natural Chelator Fulvic acid binds to locked-up minerals, making them instantly plant-available (even within 4 hours)
Root & Shoot Growth Stimulates root hair development and cell elongation, giving plants deeper access to nutrients
Photosynthesis Booster Opens stomata to improve energy conversion, especially in cloudy or humid conditions
Disease Suppression Reduces harmful microbes (e.g. Pythium) and boosts beneficial microbial populations
Plant Immune Activation Increases resistance to pests, wilting, and environmental stress
Yield Enhancer Improves flowering, brix levels, and fruit set through increased nutrient absorption
Soil Detoxifier Helps break down chemical residues (herbicides, pesticides, heavy metals) and stabilises nitrogen (urea)f

Tired of plants stalling in poor soil or not responding to fertiliser? Stimulizer flips the switch. It activates your soil’s natural potential, unlocking tied-up nutrients and feeding beneficial microbes—all within hours. Whether your plants are stressed, sluggish, or just need a kickstart, Stimulizer brings them back with a visible surge of energy and vitality.

 

Product Summary Value
Form Liquid concentrate
Best Used For Root growth, microbial activity, nutrient uptake
Use In Soil, foliar sprays, hydroponics, fertigation
Compatibility Fertilisers, herbicides, fungicides, insecticides
Application All seasons, all plant stages
Origin Made in Australia

 

Whether you're growing tomatoes on a balcony, managing turf, or running a hydroponic setup, Stimulizer gives your plants the foundation they need to thrive. With faster root development, stronger resistance, and superior nutrient uptake—it’s the boost your soil and plants have been waiting for.

Safety Guidelines

  • Keep out of reach of children. May be harmful if swallowed.
  • If ingested, seek medical help immediately.
  • Always conduct a small trial before changing rates, products, or application methods.
  • The seller is not liable for any injury resulting from the use or storage of this material.
  • This is a mineral-based fertiliser, and analysis may vary slightly due to its natural ingredients.

(STM01L)

Product Application

Application Rates

Application Type Rate
Home 2ml (40 drops) per 9L watering can OR 3-5mL per 100sqm
Broadacre 780ml per hectare
Hydroponics 360ml to 1000L of water
Foliar Turf: 290ml/Ha
Foliar Vineyard: 400ml/Ha
Foliar General: 3ml/100sqm
Frequency Apply fortnightly or when required. Does not burn or damage the plant, lawn or soil if over-applied, but works best at lower rates.


Download Application Rates Document or please refer to the rear label for application rates. 

 

Popular Questions

Q: Can Stimulizer be used with products such as PGRs?

A: Stimulizer can be used with all liquid inputs, including PGRs and herbicides, etc for a quicker uptake. However, we do suggest completing a small jar test and apply the combination of products in a test area to determine whether there is an adverse effect.

Q: What is the capacity of the Stimulizer dropper?

A: 20 drops equal 1ml.

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Amount of Reviews: 25

Stimulizer

By: Liam on 9 January 2025
A few dashes of this is must add to my sprayer when sprayer majority of my products for best result highly recommend to add this

Stimulizer

By: Bryce on 10 November 2024
After a recent decision to get my lawn in better shape, stimulizer has really helped me achieve better soil and plant root health in some troubled areas. Paired with Seaweed Secrets and Quantum H this is an incredible combination of products!!

Great service and fast shipping

By: jade on 12 March 2024
This product is fantastic. I’ll be back for more!

LUSH AND GREEN

By: Tanya on 6 February 2024
Love this product, made my new lawn from light green to a bright vibrant green in only two applications! Highly recommend. Purchased as part of the Lawn Lovers Pro Pack.

Great product and team

By: Brett on 29 January 2024
I purchased the 1L product as it represented good value. I am using with seaweed secrets and Quantum H and are totally amazed by the results on my turf, indoor and outdoor plants. Will 100% order again and recommend to friends and family.

This stuff works!

By: Steve on 23 November 2023
Overall great product that just compliments the Plant Doctor gardening regime

Stimulizer

By: Sharon on 13 October 2023
This stuff just gives my cuttings and seedlings that extra boost, Amazing!

A little is A Lot

By: David on 3 August 2023
Since using this product i have noticed the improved uptake of nutrients and a happier plant health.

Great for helping foliar applications absorb even

By: Vincent on 18 April 2022
Great for helping foliar applications absorb even faster. Worked a treat when I applied this with liquid iron

A must have to make your lawn stand out

By: Dean on 14 April 2022
Wish i purchased this Stimulizer earlier! Really helped my lawn absorb all the nurtients and noticed great results

Goes in every foliar application

By: Andrew on 11 February 2022
Doesn’t matter if I’m weeding or feeding, I chuck a bit of stimulizer in. Puts a rocket up whatever you’re applying.

Stiumulizer

By: Kyle on 11 February 2022
Great product to use alongside other liquid ferts/soil amendments. Speedy and quick delivery once ordered.

Awesome product!

By: Andrew on 11 January 2022
Handy 1L bottle will last a while! Small app. rates and can mix with just about anything.

Amazing

By: Emmanuel on 30 December 2021
This is one of my go to products to use for the lawn and around the garden when I want that extra boost.

Great product

By: Nick on 23 December 2021
Really makes a difference in uptake when added to other plant doctor products

Great little product

By: Rowan on 22 November 2021
I apply this with my Ben Sims mix through the fertigation system.

healthy plants

By: Daryl on 24 September 2021
I used the recommended dose of stimulizer on my potted plants and quickly noticed a great improvement to the plants. They are 'stronger', have greener foliage and generally look like a happier and healthier plant. Great product.

Excellent Supplement product

By: Anferny on 11 June 2021
Have tested out in my kelp mix without and with the product in the mix. You can definitely see the improvement in lawn and vege plant in the garden bed straight away. So it is a must have product in your liquid fert arsenal weapon.

Great products from PD

By: Karan on 4 January 2021
I have been using this in combination with other liquids from PD - Soil Wetter, Quantum H, Seaweed secrets, and liquid iron. They have worked great and my lawn and plants and healthy, lush and tolerant of all weather conditions. Highly recommend getting all these and spraying using a knapsack every 2-4 weeks.

Awesome product once again.

By: Nathan on 9 December 2020
Been using this now every week with all my other plant doctor products, and has made my lawn stand out so much! Thanks plant doctor!

Great product

By: Daniel on 4 October 2020
such a good product. I use with all my foliar products and when treating any lawn diseases

Highly recommended

By: Michael on 22 July 2020
Ordered my product and had them delivered within 48 hours (for free!!) Very helpful team and support to finding the right solution for my needs. Great experience as well as value for money and can’t wait to see the results of the products. I did a lot of research and came to the conclusion that PD products are the way to go. Plus supporting a local business make it the purchase even better. Thanks guys!

Stimulizer

By: Michael on 18 July 2020
Ordered this product early this week and had it delivered within 48 hours (for free!!) Very helpful team and support to finding the right solution for my needs. Great experience as well as value for money and can’t wait to see the results of the products. Thanks guys!

Stimulizer is an Amazing Product

By: Ben on 18 June 2020
Stimulizer is an amazing product. Outstanding results observed when used with Plant Doctor Liquid Iron which achieves visible plant uptake in a matter of hours and my soil health has never been better. Highly recommend this product.

Great!

By: Brad on 8 May 2020
Have been adding Stimulizer to my knapsack among other products from Plant Doctor with great results!

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Australian family owned and operated. Online sales since 2009.

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Customer Reviews

5

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

5

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

5

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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