Named for its color and, it is said, the resemblance of its petal to a woman's sunbonnet, the bluebonnet is the state flower of Texas. It blooms in the early spring and can be readily found in fields and along the roadsides throughout central and south Texas. 

"I have been trying to buy artificial blue bonnets for my wedding"?

Silk Texas Bluebonnets are available for sale on Etsy:  Texas Bluebonnets for sale