If you're growing blueberries in pots, try using potting soil that is acidic or ericaceous - like this soil for acid-loving plants from Amazon. It is recommended to fertilize blueberries to ...

Each serving provides 128 kcal, 8g protein, 21g carbohydrate, 1g fat,1g fibre. Put the blueberries into a small saucepan with the lemon zest, vanilla seeds, sweetener and 3 tablespoons of water.

If you don't have suitable soil, simply grow blueberries in a pot containing ericaceous compost, giving the plants a high potash feed (such as tomato feed) occasionally during the growing season.