Blueberry cultivars were first developed in New Jersey, I think around 1900. At one time that state was the center of commercial blueberry growing. There are many blueberry farms operating today in Michigan, near Traverse City. Maine is still the source of wild blueberries, grown on public land. In the past 2 decades there has been growth in commercial blueberry farming in the south, in Arkansas and Alabama. Research into commercial blueberry production has been done at several universities, and these universities are located in the states where blueberries are an important commercial crop. As you would expect, state universities study the blueberry varieties that do well in the climate found in that state. Blueberries are also grown in Wisconsin, Minnesota, Oregon, Vermont, New Hampshire, and Georgia.

I've only occasionally come across databases like that for any fruit and mainly those were written as tables or lists in chapters on cultivars in book monographs on the crops.

Maybe Fruit, Berry and Nut inventory is the closest thing to it you will find. Published by Seedsavers Exchange, they list a very comprehensive number of varieties of many fruits, including BB's

U.S. HIGHBUSH BLUEBERRY COUNCIL has a list of all patented high bush blueberry cultivars.

Contact info.
http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELPRDC5076337

This will not give you much information about residential usage, low bush berries ECTÂ For that you may be better served contacting your local farm bureau. And they may be able to recommend berries that perform well locally.

http://www.fb.org/index.php?fuseaction=newsroom.statefbs

Here is a small list you can access without any legwork.

http://www.fallcreeknursery.com/Commercial/VarietyChart.htm

http://www.fallcreeknursery.com/Nursery/FruitingSeasonChart.htm

more
http://www.blueberry.org/
http://web1.msue.msu.edu/fruit/bbvarbul.htm

another nice site
http://www.mofga.org/Default.aspx?tabid=847

Small scale places to order
http://www.noursefarms.com/Catalog/Category/BLUEBERRIES.aspx
https://indianaberry.com/products.php?cat=5

http://www.jrtnursery.com/pdf/B
http://www.heartlandblueberries.com/Price_List.html

Thanks for all your replies..What I mean though is there one central database such as ahs for daylilies, ars for roses and so on??I just thought there would have to be a database that included all varieties ever named and put into commerce, and showing details of each cultivar..