Humic and fulvic acid

Good lawn and garden care requires the right nutrient combination. Are you struggling to keep your lawn looking it’s best all year round? Perhaps you have a mineral deficiency in your soil (this is a common issue in our sandy Perth soils!). Aside from the traditional NPK nutrients, there are several materials that help with promoting healthy green gardens and lawns such as Humic & Fulvic Acid…

Spend any time searching for information on how to improve your lawn’s soil these days and for sure you will come across recommendations for Humic acid and fulvic acid treatments. The old farmers secret to improving soil structure is now mainstream and available in many online stores (including ours of course!) in both granular and liquid forms in small enough doses for us lawnies to utilize effectively without breaking the bank. So what IS Humic & Fulvic Acid, and how do they work?

Put Simply:

Humic Acids help the soil hold nutrients. They are not absorbed into the grass, but instead stay in the soil and make a FOOD PANTRY for the grass to eat from.  We use them to make great soil

Fulvic Acids are very small and can actually enter the plant. They help the plant deliver the nutrients from the soil to the plant. It’s like boosting the digestive system.

Fulvic Acid

Fulvic acid is a nutrient facilitator. When sprayed on plant leaves along with liquid organic fertilizer, it’s small particle size helps plants draw in and utilize those nutrients better.

Described as the ‘missing link’ in plant nutrition, fulvic acid is an incredibly versatile product – just one single fulvic acid molecule is capable of carrying 60 or more minerals and trace elements directly to cells! Fulvic acid is quite a unique organism that is able to pass through cellular membranes with ease, thus boosting the absorption and assimilation of other nutrients and minerals. In nature, fulvic acid helps nutrients and minerals absorb through a plant’s cell walls.

In soil, fulvic has what’s called a “chelating” effect on the nutrients plants need to grow. That means it keeps things like phosphorous or iron from binding together and becoming inorganic. (When nutrients become inorganic, plants can’t use them.)

While plants are able to produce many of their own vitamins, fulvic acid acts as a supplement, significantly improving the nutrient uptake. As fulvic acid fans, we have a selection of products from Plant Doctor including Fulvic Acid Liquid, Stimulizer or Quantum H.

Plant Doctor Fulvic Acid


Fulvic Acid stimulates healthy root development and helps prevent root disease. Helps plants take up nutrients and detoxifies the soil.

Plant Doctor Quantum-H


Quantum-H is a liquid humic acid concentrate. Humics provide organic and natural nutrition for plants and detoxify the soil. Buffers toxins from fertilisers.

Plant Doctor Stimulizer


Plant Doctor Stimulizer is a Super concentrate, premium Fulvic acid product with more than 75 minerals and humic acid extracts. Root growth.

Humic Acid

Humic acid is one of the champions of lawn and garden care, providing plants and soil with a concentrated dose of essential nutrients, vitamins and trace elements in an incredibly organic and natural manner.

Using Humic in your yard comes with a number of benefits including increasing root growth, stimulating beneficial microbes while reducing harmful ones, increasing soil moisture retention, improving the soil and strengthening a plant’s immune system. Basically, Humic acid retains moisture and nutrients in the root zone and helps the plant put them to good use.

Incorporating humic acid applications into your lawn care schedule will:

  • Increases the water holding capacity of the soil.
  • Increases the nutrient holding capacity of the soil which in turn means more nutrients are available to your turf when it needs it instead of it leaching out.
  • Increases soil carbon which in turn increases the soil’s water holding capacity.
  • Chelates nutrients which makes them more readily available to the plant – unlocks nutrients.
  • Excites microbes which benefits soils and also improves nutrient exchange between the plant and the soil.

Plant Doctor has a number of Humic products that include Quantum H, Humic Acid and Seaweed Secrets. These products can be used at any time of the year on all plants and can be applied to all crops, vegetables, trees and vines.

Plant Doctor Humic Acid


Plant Doctor Humic Acid helps stabilise nitrogen, improves the soil and detoxifies various pollutants. Natural & Organic nutrition.

Plant Doctor Quantum-H


Quantum-H is a liquid humic acid concentrate. Humics provide organic and natural nutrition for plants and detoxify the soil. Buffers toxins from fertilisers.