Answer: There is always a risk of over fertilizing containerized plants so I would feed cautiously. Use a half strength dilution of water soluable fertilizer such as Miracle Gro and feed every 2 weeks during the growing season. This will provide the necessary nutrients in mild doses so you won't run the risk of burning the roots of your blueberry plants. You can spread a little peat moss over the soil, as well. Best wishes with your plants.
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