In California, alfalfa varieties are tested over a wide range of environments, from 3-cut systems (dormant varieties) in the North, to 9 cut systems (non-dormant varieties) in the South. We grow varieties from very heavy to very light soils.

The Alfalfa Acreages Map on the left illustrates areas where alfalfa is grown in California. Select one to view variety data summaries for that area.

Learn about how to manage your old stands with removal, crop rotation, and overseeding. Overseeding another forage species into a depleted alfalfa stand can extend stand life and improve yield.

Buy Now

This 24-chapter publication is designed to provide detailed, scientifically-based comprehensive information about the growth, production, management, and utilization of alfalfa grown under irrigation. This publication has been UC peer reviewed.

View grass and forage trial data.

Alfalfa seed produced throughout the world is primarily used for forage production. The following articles provide an overview of alfalfa seed production techniques in California.

Learn about manures and integrating dairy manure water nutrient use with forage production in alfalfa.

Learn about the contributions of alfalfa to wildlife and the environment.

• Year-Round IPM Program for Alfalfa (2006) - These practices are recommended for a monitoring-based IPM program that reduces water quality problems related to pesticide use

Learn about the costs and methods of producing organic alfalfa hay.

Glyphosate-tolerant (GT) Alfalfa or Roundup-Ready Alfalfa (RRA) was approved for planting in the US in February, 2011. RRA is a genetically engineered variety of alfalfa, which can be used safely in combination with the herbicide 'glyphosate' (Roundup). RRA was originally deregulated and commercialized in 2005 but then a lawsuit in 2007 rescinded the deregulation, halting further plantings.

Learn about the economic value of alfalfa and see market summaries for alfalfa crops and other commodities.