Asparagus - Kansas State University
   Cultural details on growing the crop that includes husbandry, pests and diseases, harvesting and returns. [PDF]
   http://www.oznet.ksu.edu/library/hort2/mf1093.pdf

Asparagus Production Management and Marketing Bulletin - Ohio State University
   Comprehensive guide to producing asparagus. It includes site selection, varieties, planting, pest control, harvesting and a look at costs and returns.
   http://ohioline.osu.edu/b826/index.html

Asparagus in tropical Australia
   From the Department of Primary Industries, Queensland, Australia, these notes cover the establishment, maintenance and harvest of commercially grown asparagus.
   http://www2.dpi.qld.gov.au/business/10364.html

Michigan Asparagus Advisory Board
   Promotes the production and sale of the vegetable, and assists in research. Also includes recipes, nutritional information and details on the asparagus industry in Michigan.
   http://www.asparagus.com