I just received my blueberry shipment yesterday, and was anxious to plant. I ordered 14 blueberry 2-3 foot tall plants (climax, premier, brightwell, and delight varieties). Blueberries like a little acidity and do very well in the southeast Texas well drained sandy soil. We will put most of the plants in the ground in Livingston, but I wanted to have a couple here in San Antonio in pots.
My blueberry potting mix: Sandy southeast Texas soil, peat moss, worm castings, and finished compost.
For the two plants I split 4 lbs of Texas red worm castings that I placed near the roots, not mixed like the other components. Worm castings are an outstanding fertilizer to support root growth and development.
These plants should produce a few berries early this Summer, but we will pick them early to yeild a better crop in the second year.
I chose a large container, and repurposed an empty syrup tub that we use to feed cows.