I have found two excellent online honeybee blooming guides specific to North Carolina, separated by region (Western, Piedmont, Coastal) and highlighted by current date, as well as a general blooming guide with dates.
I think I am too new a member to post the URLs. If you message or e-mail me I will send them to you and perhaps someone with authority can post them in the forum. One is at ncbeekeepers and the other at ncsu.
-- eri (aka Jane)