Orange trees and honey produced from them are confined to semi-tropical climates in the United States which includes Central Florida, The lower Rio Grande Valley in Texas, Arizona and California. Actually there are many varieties of citrus grown including grapefruit, , and tangerines. The blooms are easily set back by frost and freezing. Many northern beekeepers transport bees into Florida to take advantage of the orange early crop for spring build up and a honey crop. It begins to bloom in mid February and continues into April.
Description of nectar
Lovell describes it as "nearly white or light yellow in color, has the fragrance of the bloom, and a most pleasant flavor." It is described by the Department of Agriculture in Florida as, "Genuine orange blossom honey is light amber in color, heavy in body, and has the real aroma of the grove in bloom and does not darken or change flavor much with age. In aging it granulates readily."
Description of pollen grain
We could not find any micro photographs of orange or citrus in any of our references.