Join a cooperative built by growers, for growers.
Since 1957, CALAMCO has operated as a grower-owned cooperative dedicated to providing a secure supply of nitrogen fertilizer through a strong dealer network and returning profits to member-owners.
Contact UsWhy Become a Shareholder?
- Grower-Owned Cooperative — You share in both cost savings and profits.
- Reliable Nitrogen Supply — Backed by California’s only ammonia terminal.
- Member Governance — Decisions made by growers, for growers.
- Annual Patronage Dividends — Members share in cooperative success.
How Membership Works
- Calculate your annual nitrogen usage, NH3 equivalent.
- Determine required shares based on 0.15 tons NH3 per share entitlement.
- Purchase shares, cash or installment option available.
- Purchase rebatable products through authorized dealers.
- Receive annual patronage dividends based on usage.