PLEASE NOTE THIS ITEM IS 1000L IN AN IBC SHUTTLE. FORKLIFT DELIVERY FOR A PALLET IS REQUIRED AND FOR COMMERCIAL PREMISES ONLY. MADE TO ORDER – PLEASE ALLOW 2 WEEKS FOR DISPATCH. CAN NOT BE DELIVERED TO RESIDENTIAL ZONES.
Quantum H is a premium liquid humic acid soil conditioner engineered for large-scale turf, horticulture, and agricultural operations requiring fast, measurable improvements in soil structure, nutrient efficiency, and biological performance. Sourced from high-grade Leonardite, its concentrated short-chain humic and fulvic acids deliver rapid nutrient release, improved moisture infiltration, and enhanced microbial activity, making it a high-value input for soil repair, fertility building, and regenerative farming programs. Ideal for commercial environments where soil performance directly impacts yield, turf quality, labour efficiency, and input ROI.
Turf farms, councils, golf courses & sports turf
Outcome: Denser turf canopies, improved water efficiency, and more responsive nutrient programs across large managed turf areas.
Horticulture, Nurseries, Fruit & Vegetable Production
Outcome: Higher plant vigour, reduced nutrient waste, and improved soil consistency across production beds or container systems.
Broadacre, Row Crops & Regenerative Agriculture
Outcome: More resilient soils with greater moisture retention, nutrient efficiency, and biological performance, essential for modern sustainable farming.
Quantum H is more than a soil conditioner; it's a soil activator that changes the way your soil functions at a biological and chemical level. Powered by short-chain humic and fulvic acids extracted from high-grade Leonardite ore, it enhances the soil’s cation exchange capacity (CEC), buffers pH, stimulates microbial life, and unlocks bound nutrients in the soil matrix. Humic substances are the most active component of organic matter in soil, formed through the natural breakdown of ancient plant and animal materials. Within this group are three key compounds:
Quantum H contains a high concentration of short-chain humic and fulvic acids, which are more biologically active and effective than longer-chain forms. This makes it a fast-acting, high-performance input.
| Function | How It Helps |
|---|---|
| Chelation & Nutrient Release | Breaks bonds that lock nutrients in the soil, making them available to plants |
| Water Retention & Soil Structure | Improves porosity and reduces runoff, helping roots access more water |
| Microbial Activation | Feeds soil microbes that break down organic matter and cycle nutrients |
| Soil Detoxification | Binds and neutralises heavy metals, herbicide residues, and excess salts |
| Carbon Source | Supplies organic carbon critical for soil biology and humus formation |
| Root Support | Encourages deeper, more fibrous root growth for better drought resilience |
| Attribute | Value |
|---|---|
| Product Type | Liquid Humic Acid Soil Conditioner |
| Source | High-grade Leonardite |
| Best For | Soil repair, detoxification, nutrient unlocking |
| Application | Broadacre, horticulture, turf, nurseries, fertigation |
| Organic Status | 100% natural organic carbon source |
| Origin | Made in Australia |
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 to be mixed with iron-based products. Apply separately.
(QH_IBC)
| Application Type | Details |
|---|---|
| HOME | 1ml per 1sqm 100ml per 100sqm Apply fortnightly or as required. |
| BROADACRE | 6 - 10 Litres per hectare in enough water to provide thorough coverage or 1000 litres of water, reapplying 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. |
| Added with nutrients | Add 2-4 litres of Quantum H per Hectare mixed with the liquid nutrients. Add to a partially filled tank. Include with every application. |
| SPRINKLER OR DRIP IRRIGATION | 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 | Mix 4 litres of Quantum H per 750 litres of solution. Mix well before use – Dilute in at least 1:20 in water. |
| AGRICULTURAL SPECIFIC RECOMMENDATIONS | Vegetables 600ml per 100L water up to 3.5L/ha equivalent. Apply every 2 weeks or as required. Orchards & Vineyards 600ml per 100L water up to 5L/ha equivalent. Apply every 4 weeks or as required. Ornamentals & Turf 600ml per 100L water up to 3.5L/ha equivalent. 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, depending on canopy closure. Apply as required. 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. |
Quantum H is a high-strength humic acid soil conditioner designed for large-scale turf management, agriculture, horticulture, nurseries, and broadacre soil improvement programs. It increases nutrient availability, supports microbial activity, enhances soil structure, and improves long-term soil performance across all soil types.
Application frequency depends on the soil program being followed, the existing soil condition, and the goals of the grower or turf manager. Many commercial users apply Quantum H as part of routine fertigation, boom spraying, or soil-conditioning programs throughout the year.
Commercial application rates vary depending on crop type, soil profile, equipment, and program design. Refer to the rate tables on the product label or the Plant Doctor website for detailed recommendations across turf, farms, nurseries, and large-scale plantings.
Yes. Quantum H is suitable for all warm-season and cool-season grasses and is widely used by turf contractors, sporting fields, golf courses, councils, and sod farms.
Yes. Quantum H improves nutrient efficiency and can generally be mixed with most liquid fertilisers and biological products. It helps reduce nutrient lockup and loss, making it ideal for integrated fertiliser programs.
Yes. Quantum H is commonly combined with Seaweed Secrets, Stimulizer, Activ8EXTRA, and fulvic acid products as part of soil health and fertility programs used in turf management and agriculture.
Quantum H is derived from natural leonardite and contains both humic and fulvic fractions. While not certified organic, it is non-toxic, biodegradable, and suitable for sustainable soil improvement programs.
Quantum H enhances soil structure, reduces compaction, increases moisture retention, stimulates beneficial microbial activity, and improves nutrient uptake efficiency. These benefits support healthier soils and plant performance across high-demand commercial environments.
Yes. In sandy soils it helps retain moisture and nutrients. In clay soils it assists with aggregation and drainage, making it suitable for a wide range of Australian conditions and soil management programs.
Yes. Once the product has dried after application, treated surfaces are safe for public access, including pets and children. This makes it suitable for councils, schools, sporting grounds, and recreational areas.
Quantum H can be used in diluted form through fertigation systems to support nutrient uptake and microbial activity. For hydroponics, trial on a small scale is recommended to confirm suitability with existing nutrient solutions.
Help other Plant Doctor Pty Ltd users shop smarter by writing reviews for products you have purchased.
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.
Will definitely be getting more 8 weeks difference been using stimulizer, activ8mate, soil wetter, seaweed secrets and champion fertiliser. Was super fast delivery.
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!
Sign-up for exclusive deals and the latest news.
