Skip to content
Loading image: Organic Dry Fertilizers Organic Dry Fertilizers

Organic Dry Fertilizers

Granular Organic Fertilizers with Mycorrhizae and Beneficial Bacteria for Soil Building

HardyGro's granular organic fertilizers combine slow-release nutrition with billions of beneficial bacteria and mycorrhizae fungi to build soil biology while feeding plants over extended periods. These dry fertilizers are designed for incorporation at planting, transplanting, bed preparation, and top-dressing established crops—providing months of steady nutrition from a single application.

The granular products include GroRocket's complete organic fertilizer formulations with balanced NPK and UltraBio's microbial inoculant shakers containing mycorrhizae, Trichoderma, beneficial bacteria, humic acids, and amino acids. All granular fertilizers contain living microorganisms that colonize root zones and remain active throughout the growing season, unlike water-soluble products that deliver a quick hit and move through the soil profile.

Granular fertilizers work differently than liquids or solubles. The slow-release formulation means nitrogen, phosphorus, and potassium become available gradually as soil microbes break down organic materials—matching plant uptake patterns and reducing leaching losses. One application at planting can carry crops through multiple growth stages without the need for frequent reapplication. The microbial component establishes in the root zone and continues working long after the initial nutrients are consumed.

Application is straightforward: broadcast and incorporate before planting, band along rows, work into transplant holes, or top-dress around established plants and water in. No mixing, no spray equipment, no measuring liquids. These products suit operations where soil incorporation makes sense—new plantings, landscape installations, garden bed preparation, or maintenance feeding of established crops and ornamentals.

Why Choose Granular Fertilizers?

  • Slow-release nutrition feeds plants for months from a single application, reducing labor and reapplication frequency
  • Living microbes establish in soil and continue working throughout the season, building long-term soil biology
  • Simple application—broadcast, incorporate, or work into planting holes without mixing or spray equipment
  • Reduced leaching and runoff compared to fast-release fertilizers means more nutrition stays in the root zone
  • One application at planting provides baseline fertility while biological activity improves nutrient cycling over time

Granular fertilizers with beneficial microbes build soil health and plant nutrition together—providing both immediate feeding and long-term biological benefits.