I also have tried to grow a blood orange. It was not very successful. I think it was variety Torocco, but that was a long time ago. There were very few fruits produced and they just did not turn red. It was a large, rank tree and a disappointment. Perhaps it does not get cold enough here for them to turn red. I recently drove by the old house and years later, the tree is still there, twice as tall as the other citrus - and still no fruit in sight.
As for blueberries, I 'only' have about 50 plants. And I'm eating some right now. :):) I've been able to pick about 1-2 quarts about every week or two. I picked 1 quart on Christmas day. The quality is very good - sweet and flavorful. This is extremely early for picking significant numbers of fruits, and there are many bunches of green ones not that far off from ripe. Our harvest usually does not begin until April. My plants (scraggly but evergreen over the winter) are also blooming, setting even more fruit, and many are putting out new leaves. It's going to be a very long season. Excellent!