Rhizofuel Fertilizer by Rootgrow INC

Made for Arborists by Arborists!

Welcome to the future of soil health. RhizoFUEL™ is the #1 Arborist Formula designed to bridge the gap between rigorous laboratory science and real-world practice. Created specifically for tree care professionals, this new and improved mycorrhizae blend is a powerful biostimulant that transforms poor, depleted dirt into biologically active, living soil.

Modern urban environments often lack the natural nutrient cycling found in undisturbed forests, leaving plants vulnerable and heavily reliant on synthetic chemicals. RhizoFUEL™ restores the vital “underground internet”—a natural network of fungal hyphae that connects tree and shrub roots to the surrounding environment. Co-developed by pioneering microbiologist Dr. Mike Amaranthus and ISA-Certified Arborists Peter and Hunter Felix, this formula brings a 50-year legacy in professional arboriculture right to your roots.

The RhizoFUEL™ Difference: Key Benefits

• Accelerated Root Growth: Increases root mass to build stronger, deeper root systems for healthier plants.
• Enhanced Drought Resistance: Dramatically increases water absorption, improving retention and tolerance to environmental stress.
• Superior Nutrient Access: Increases nutrient uptake, enabling trees and shrubs to extract more nutritional resources already present in the soil.
• Improved Soil Structure: Rebuilds the underground environment to support long-lasting landscape health.
• Dramatic Chemical Reduction: Significantly decreases reliance on expensive, imported synthetic fertilizers by supporting plants naturally.

What’s Inside the Bag?

RhizoFUEL™ features unmatched diversity to establish a thriving soil ecosystem, delivering all the necessary beneficial organisms and the food sources they need to thrive.

Note: A detailed guaranteed analysis with exact concentrations can be found in the specifications tab.

• 14 Species of Mycorrhizae
• 10 Species of Ectomycorrhiza
• 4 Species of Endomycorrhiza
• 4 Species of Beneficial Bacteria
• Premium Seaweed Extracts
• Humic Acids

Application Directions

RhizoFUEL™ must be mixed in water before application.

Soil Inject (Best Method):
Inject 4 gallons of solution per caliper inch, 2–8 inches below ground in concentric circles. Inject holes 2.5 feet apart from the trunk extending a few feet beyond the drip-line.

Direct Tank Mix (Maintaining Healthy Plants):
Mix 1/2 lb of RhizoFUEL™ per 100 gallons of water. Apply one or two times per season.

Direct Tank Mix (Stressed Plants):
Mix 3/4 to 1 lb of RhizoFUEL™ per 100 gallons. Apply one or two times per season.

Soil Drench:
Mix 1/2 to 1 lb of RhizoFUEL™ in 100 gallons to cover 1 acre, or use 10 gallons per 4000 sq ft of shrub beds.

Planting and Transplanting:
Mix 1 tablespoon per gallon of water (mix well) and soak roots or rootball with the solution before backfilling.

Potted Plants:
Mix 1 tablespoon per gallon. Use 3–5 oz. of solution for a 4-inch pot. Use 6–10 oz. of solution for a 1-gallon pot.

Compost Tea:
Use 1/4 lb per 100 gallons at the beginning of the brew cycle or 1 tsp per gallon.

Safety & Storage Information

• Store this product between 38 and 85 degrees F.
• Avoid direct sunlight.
• KEEP OUT OF REACH OF CHILDREN AND PETS.
• DO NOT INGEST OR INHALE.
• AVOID CONTACT WITH EYES OR SKIN.
• WASH HANDS AFTER USE.

Net Weight: 2 lbs (907.2 g)

Please read entire product label before use.

Rhizofuel MSDS (PDF)
Rhizofuel Label (PDF)

SEE SPECIFICATIONS TAB FOR STATE AND INTERNATIONAL RESTRICTIONS ON PRODUCT USE

Frequently Asked Questions

1. What are the active ingredients in RhizoFUEL™?

RhizoFUEL™ is a power-packed biostimulant that transforms your soil. The formula includes 14 species of Mycorrhizae (10 Ecto and 4 Endo species). It also contains 4 species of beneficial bacteria, humic acids, and seaweed extracts.

2. How do I use RhizoFUEL™?

RhizoFUEL™ must be mixed in water before applying. It is a versatile powder that can be applied in several ways depending on your landscape’s needs, including as a direct tank mix, a soil drench, a soil injection, or even added to compost tea.

3. What is the proper or best application method for trees and shrubs?

The best method for application is a soil inject. You should inject 4 gallons of the mixed solution per caliper inch, 2–8 inches below ground in concentric circles. Inject holes 2.5 feet apart from the trunk extending a few feet beyond the drip-line.

4. How much product do I need to mix for a standard tank application?

For maintaining healthy trees and shrubs, mix 1/2 lb of RhizoFUEL™ per 100 gallons of water. If you are treating stressed trees and shrubs, increase the strength to 3/4 to 1 lb of RhizoFUEL™ per 100 gallons.

5. How often should I apply RhizoFUEL™?

For both standard maintenance and treating stressed plants via tank mix, you should apply the solution one or two times per season.

6. Can I use this product when planting, transplanting, or for potted plants?

Yes. For planting and transplanting, mix 1 tablespoon per gallon of water and soak the roots or rootball with the solution before backfilling. For potted plants, use 1 tablespoon per gallon. Apply 3–5 oz. of solution for a 4-inch pot, or 6–10 oz. of solution for a 1-gallon pot.

7. How does RhizoFUEL™ help reduce the need for chemicals?

RhizoFUEL™ restores the natural “underground internet” of fungal hyphae that networks trees and shrubs together. By rebuilding these natural associations, plants can extract significantly more of the nutrients and water already present in the soil. This allows for resilient growth while dramatically reducing the reliance on imported synthetic fertilizers and chemical treatments.

8. What kind of environments benefit most from RhizoFUEL™?

It is highly effective in urban and suburban landscapes, public parks, residential gardens, and commercial sites. These areas often suffer from topsoil loss, compaction, and mixed plantings that would not normally grow together. RhizoFUEL™ bridges these gaps by cultivating a living, dynamic soil equilibrium so plants become more tolerant to drought and environmental stress.

9. How should I store the product when not in use?

Store this product between 38 and 85 degrees F. Always avoid direct sunlight.

10. Is there any safety information I need to keep in mind?

Keep out of reach of children and pets. Do not ingest or inhale the product. Avoid contact with eyes or skin, and wash your hands after use.