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Horticulture & Greenhouse

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SeaBio K-14%, Soluble Seaweed Extract, biostimulants, water soluble

Premium seaweed extract with 14% potassium plus amino acids
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HumuSoil- Humic acid, Fulvic acid, from leonardite soluble powder

Restore your soil with 80% humic acid soil conditioner
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Sugar Express 4-10-40 , + Kelp, + Micro Nutrients, water soluble (5lb)

water soluble fertilizer - Pre-harvest finisher for ripening crops
$49.95
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Sugar Express 4-10-40, + Kelp, + Micro Nutrients (25lb)

water soluble fertilizer - Pre-harvest finisher for ripening crops
$134.75
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Microplex-water soluble Micro Nutrient fertilizer. (5lb)

Complete chelated trace mineral supplement water soluble fertilizer
$58.00
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$169.50
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HumuSoil-L -Organic Humic and Fulvic Acid Liquid Concentrate (64oz)

Restore your soil with humic & fulvic acid concentrate
$16.50
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Organic Fulvic Acid Liquid Concentrate (64oz)

Increase the effectiveness of your fertilization by enhancing nutrient transport!
$22.50
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MycorrPlus Concentrated Trace Minerals (64oz)

Trace minerals to boost plant metabolism
$32.00
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$49.00
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Millerplex 3-3-3, kelp-based balanced fertilizer (1Gal.)

Kelp-based balanced fertilizer for crops
$108.00
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Professional Biostimulants and Biological Fertilizers for Greenhouse & Horticulture

HardyGro's bio-fertilizers, soil amendments, and microbial inoculants are engineered for horticulturists and greenhouse growers who demand more from their growing media. Our living inputs enhance root development, improve nutrient absorption, and promote vigorous, resilient plants—even in controlled environments.

A healthy microbial community is essential to building healthy soil and healthy plants in greenhouse and container production. Growing and feeding your microbes with HardyGro biostimulants, beneficial bacteria, and mycorrhizae inoculants provides your soil with the rich microbial diet it needs. Our biological fertilizers and soil microbial inoculants are a cost-effective way to keep your microbes alive, flourishing, and working for you—promoting productivity and crop quality by balancing the synergy between plants and soil.

Whether you're growing in containers, raised beds, or hydroponic systems, HardyGro delivers powerful organic fertilizers and soil conditioners that activate root zones, restore microbial balance, and help greenhouse crops thrive under stress. Healthy microbial life equals healthier plants—and better profit margins.

Why Choose HardyGro for Horticulture?

  • Improved germination and early root establishment
  • Robust growth that produces maximum blooms and buds leading to higher yield
  • Strengthen plant resistance to heat, humidity, and pathogens
  • Reduce dependence on synthetic inputs
  • Compatible with hydroponic and organic systems

Trust HardyGro for sustainable, science-backed results in your Orchards, Fields, Containers and Greenhouse.