Calcium Products

Calcium Products

Calcium-based fertilizers for crops and turf

Overview

Calcium Products makes calcium-based fertilizers, especially pelletized limestone and gypsum, for farmers and turf managers. It buys and processes pure limestone to create products that raise soil calcium and adjust pH, helping soil structure and nutrient availability so crops and turf can grow better. The pellets are designed for easy spreading and even distribution, making soil conditioning simpler for growers. The company differentiates itself through its focus on high-purity limestone sources and a long history of soil-health work, plus a track record of expanding its sales and operations under different ownership groups. Its goal is to improve soil health and crop yields by delivering reliable calcium-based soil amendments at scale, and to grow by incorporating agtech approaches and broader distribution under its current leadership.

Significant Headcount Growth

About Calcium Products

Simplify's Rating
Why Calcium Products is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Food & Agriculture

Industrial & Manufacturing

Company Size

51-200

Company Stage

N/A

Total Funding

N/A

Headquarters

Ames, Iowa

Founded

1987

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Simplify's Take

What believers are saying

  • Calcium Products began Blair construction in 2025 on 113 acres.
  • The Blair site adds 98G limestone, SO4 gypsum capacity, and two load-outs.
  • HBM acquired Calcium Products on September 25, 2024, adding about 130 employees.

What critics are saying

  • Blair plant completion slips past late 2026, delaying promised capacity expansion.
  • HBM's 2024 acquisition can distract leadership during integration and capital allocation.
  • Specialty fertilizer competitors can undercut pricing before Calcium Products scales Nebraska output.

What makes Calcium Products unique

  • Ames limestone access gives Calcium Products unusually pure feedstock economics.
  • Its pelletized limestone and gypsum focus serves row crops and turf buyers.
  • Mike Hogan stayed after HBM's 2024 deal, preserving customer and sales continuity.

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Growth & Insights and Company News

Headcount

6 month growth

12%

1 year growth

12%

2 year growth

12%
HBM Holdings Company
Jul 8th, 2025
Calcium Products, an HBM Company, Expands Operations with Nebraska Facility

One recent example: Calcium Products, an HBM company, has finalized the purchase of 113 acres in the Blair South Industrial Park in partnership with Gateway Development Corporation.

PR Newswire
Sep 25th, 2024
HBM Holdings Acquires Calcium Products

/PRNewswire/ -- HBM Holdings announced the acquisition of Calcium Products, Inc., a premier manufacturer of high-quality agricultural fertilizers. Founded in...

Port Arthur News
Sep 25th, 2024
HBM Holdings Acquires Calcium Products

ST. LOUIS, Sept. 25, 2024 /PRNewswire/ - HBM Holdings announced the acquisition of Calcium Products, Inc., a premier manufacturer of high-quality agricultural fertilizers.

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