• GardenIQ RhizoCarbon high carbon liquid fertilizer
  • Indoor houseplant and garden benefits of GardenIQ liquid fertilizers
  • GardenIQ liquid fertilzer hand mix and pour instructions
  • GardenIQ RhizoCarbon high carbon liquid fertilizer back label
  • GardenIQ liquid fertilizer evolution from professional settings to home use
  • GardenIQs and enhanced Organics Nutrx technology
  • Value per bottle of GardenIQ fertilizer / Enhanced Organics
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Houseplant & Root Growth Fertilizer – RhizoCarbon [2-0-5]

Houseplant & Root Growth Fertilizer – RhizoCarbon [2-0-5]

$35.00 USD
$35.00 USD $35.00 USD
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The ultimate carbon-rich fertilizer for explosive root and vegetative growth.

Best For:

  • Houseplants, potted plants, and hydroponics
  • Vegetables, flowers, and fruiting plants
  • Early-stage growth, propagation, and recovery

Powered by Nutrx™ — our proprietary technology designed to maximize absorption and minimize burn risk. Learn more

RhizoCarbon [2-0-5] delivers GardenIQ's highest level of soluble carbon along with humic and fulvic acids. These organic compounds supercharge root development and nutrient uptake — just like a probiotic boosts digestion in humans. This humic acid fertilizer enhances root strength and nutrient absorption in all houseplant and indoor garden environments.

Pair It With:

Doonbeg to cover both sides of houseplant health: RhizoCarbon for strong roots, Doonbeg for natural growth stimulation.

How to Use:

Mix 2-8 tablespoons (1-4oz) per gallon of water and apply to the soil every 2–3 weeks. Use on its own or pair with Doonbeg / Octane Boost for more complete nutrition.

Made in the USA and trusted by turf managers, farmers, and home gardeners nationwide. Brewed, blended, and bottled in Chicago, IL

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Frequently Asked Questions

What does RhizoCarbon do?

It strengthens root systems and supports steady plant growth using high-carbon fulvic and humic acids.

How often should I apply it?

Once every 2–3 weeks for best results. Adjust frequency based on plant size and season.

Is it safe for houseplants?

Yes! RhizoCarbon is ideal for houseplants, hydroponics, and potted plants of all types.

Can it be combined with other fertilizers?

Yes — it pairs especially well with our Doonbeg and Octane Boost liquid fertilizers for a full-spectrum houseplant nutrition routine.

Where is this made?

Brewed, blended, and bottled in Chicago, IL.