I live in Central Alabama. Is it too late to plant blueberrys this year?
No, but you will have to take extra care to water them frequently enough.
When the root ball stays intact, it is similar to planting a pot in the ground. The roots they have are just the root ball. You would not have to water them as much as you would if it was a pot exposed to the sun, but dry ground will leach moisture away if you just water the area around the plant, so the bed should be watered.
The ideal time to plant is when it cools down in the fall. Then the have the fall, winter, and spring to establish themselves before the heat of summer. If you do not want to wait until fall, plant them now. Just water them enough to keep the entire bed moist, and mulch them well so the ground the are growing in stays cooler.
Some shelter from the western sun that is the hottest part of the day is helpful. Blueberries can tolerate partial shade, but fruit better in full sun. My thinking is that they need 8 hours of sunlight to fruit well. That 8 hours can be interrupted by some dappled sunlight for short periods. I would prefer if all of my full sun plants are shaded late in the day, here in the south.
Another thing I have come to prefer is that my early fruiting varieties do not fruit as early if they get early morning shade early in the year. As much as a week or two later depending on the year and how much. Evergreens are best for this shade, obviously.
The more acidic organic material in the soil that you add the better. If you are in north Alabama clay, I would prefer raised beds. Otherwise, I would not prefer them.
Pine bark based soil conditioners are good to add, but it does not hold a lot of moisture. Some well rotted oak leaves is helpful. Peat moss is to, and especially for it's ability to absorb and retain moisture. I prefer all three to make up about half of the bed's contents if the soil is sandy. The more organic material in the soil, the less I would need to add.
During the growing season, they can use anywhere between one and three inches of water per week. This depends on their growing conditions. This is for an established plants, so keep that bed moist, and throw the individual plants a little extra water. Once they are leafed out next spring, you will be happy with what you see.
Southern High Bush varieties have many advantages, but they are not as durable and forgiving as the rabbit eye varieties. If you pick Southern High Bush varieties, put more effort into things being just right.