Urth Agriculture
Pro Grow System

Pro Humic

Humic & fulvic acids

Superior liquid humic acid from ancient humic shale that restores natural soil balance, increases plant vigor and moves nutrients into the plant.

100% organicCDFAOMRI ListedNon-toxic
Pro Humic product label
Why growers use it

A soil life conditioner, and a natural detoxifier.

Suitable for conventional and organic farms, safe any time in the season without burning, and safe around pollinators, beneficials, pets and children. Used with Pro Minerals, the benefits multiply.

01Natural detoxifier

Humic acid immobilizes contaminants, promotes biodegradation, improves nutrient retention and supports soil structure and microbial activity.

Chelation: humic acid binds metal ions such as lead, cadmium and arsenic, reducing their availability to plants and microorganisms and keeping them out of the food chain.

02Increase nutrient and water uptake

Cation exchange capacity: humic acid helps soil hold calcium, magnesium, potassium and ammonium, keeping nutrients available and out of groundwater.

pH buffering: it keeps soil pH in the best range for plant growth and microbial activity.

03Root and shoot growth booster

By improving nutrient availability, structure, water retention, stress resistance, biological activity and hormonal balance, humic acid promotes root growth and maximizes productivity.

04Improve soil tilth and structure

Humic acid promotes and stabilizes soil aggregates for better porosity, infiltration and air exchange. It also stimulates bacteria, fungi and actinomycetes that break down organic pollutants through natural bioremediation.

05Easy to apply

A liquid concentrate that mixes easily in water and is compatible with most soil inputs. Available in 2.5 gallon jugs or totes.

Humic granules with a green leaf
The finest humic on the market

Source and extraction methods matter.

Not all humic deposits are alike, and the market is saturated with inferior products, many from overseas and high in salt, heavy metals and other toxins. Pro Humic comes from some of the finest ancient plant matter, low in ash, with no fillers, binders or additives.

It’s extremely soluble, so high-carbon humic acid reaches deep into the soil, binding arsenic, lead, mercury and other pollutants so the plant doesn’t absorb them. It restores the natural cycling of nitrogen, carbon and phosphorus and works with most liquid application methods.

Close-up of dark, healthy soil
Rapid soil detoxification

Immobilize, adsorb, stabilize, degrade.

  • Chelation of heavy metals: binds lead, cadmium, arsenic and mercury into stable complexes that are less mobile and less bioavailable.
  • Adsorption of organic pollutants: captures pesticides, herbicides, PAHs and industrial chemicals, and feeds the microbes that break them down.
  • Better soil structure: more aggregation and porosity, with more surface area for sorption and microbial activity.
  • pH buffering: holds soil pH where microbes degrade contaminants most efficiently.
A seedling drawing nutrients from the soil
Increase nutrient and water uptake

A slow-release nutrient reservoir.

Humic acid’s high cation exchange capacity holds calcium, magnesium, potassium and ammonium in a reservoir the plant can draw on, releasing them slowly over time.

It also chelates iron, zinc, copper, manganese and boron, keeping these micronutrients soluble and available to roots.

Documentation

Labels, safety data and certifications.

OMRI Listed for organic useCDFA registered organic input material

Put Pro Humic to work on your farm.

Tell us about your crop, acreage and irrigation and we’ll build a program around it.

The rest of the Pro Grow System

A family of products that perform.

Each product does one job well. Together they feed soil life, structure the ground and protect the crop.

SOM protocol

  • Pro MicrobesBiological fertilizer

    A powerful biological fertilizer for living soil.

    • Build soil organic matter
    • Maximize microbial activity
    • Balance soil pH
    Learn more about Pro Microbes
  • Pro GuardNutrient-dense crop food

    A diverse nutrient and food source for the crop.

    • Diverse nutrient and food source
    • Faster, stronger root development
    • Stronger immune response
    Learn more about Pro Guard
  • Pro CalciumSoil structure & oxygenation

    Flocculates the soil for good structure and oxygen.

    • Ultra-micronized and water soluble
    • Relaxes soil, improves structure
    • Better water retention
    Learn more about Pro Calcium
  • Pro EnergyMicrobial food & electrolyte

    Organic food and electrolyte for macro and microbial life.

    • Energizes soil life
    • Balances soil, stimulates growth
    • Improves tilth and structure
    Learn more about Pro Energy
  • Pro EnzymeMicrobial stimulation

    Enzymes that stimulate soil microbial life.

    • Accelerates beneficial microbes
    • Reduces plant stress
    • Less run-off, inhibits root rot
    Learn more about Pro Enzyme
  • Organic SugarCarbohydrate source

    Long- and short-chain carbohydrates to fuel microbes.

    • Microbe fuel
    • Superior organic cane sugar
    • Used in SOM and compaction protocols
    Learn more about Organic Sugar

Foliar protocol

  • Pro Guard FoliarPest-resistance plant food

    Feeds the plant while it deters predatory pests.

    • Protects against pests
    • Mimics high °Brix
    • Immediate nutrient uptake
    Learn more about Pro Guard Foliar

Additional products

  • Pro MineralsTrace minerals & amino acids

    Essential trace minerals that move nutrients into the plant.

    • Transporter and chelating agent
    • Faster, stronger roots
    • Improved drought tolerance
    Learn more about Pro Minerals
Topsoil 0–12 in

Increase yields, maximize quality and save money.

Save moneyImprove harvestsReduce inputsRemediate toxicity
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