Zinnia (edging cultivars) (Zinnia elegans short) and Zinnia (medium height cultivars) (Zinnia elegans medium height)

 

Consider Profusion Zinnias For Great Warm-season Bedding Plants Is a Louisiana State University Cooperative Extension publication which has basic information on this annual flower.

 

Greenhouse Production of Bedding Plant Zinnias is Alabama Extension publication which covers how to produce this annual in a greenhouse.

 

Zinnia (edging cultivars) is a New York's Cornell University Cooperative Extension Service publication which has information on this annual.

 

Zinnia (medium height cultivars) is a Cornell University Extension publication which has information on plant characteristic, how to grow it, and what varieties are available.

 

Zinnias is a Kansas Cooperative Extension publication which explains what varieties are available and how to cultivate this popular flower.

 

Zinnias - Tried and True Color is a Florida Extension publication  which has general information about this plant.