DIY SOIL TEST 1/4 soil add a little distilled water to make a mud. Add vinegar, if it fizzes , its alkaline. 1/4 soil mud mixture add baking soda, if it bubbles ,its acidic- if there's no reaction your soil is neutral
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How to Grow Blueberries in Pots (the secret is four “Ps”). Because you’re planting them in containers and can provide for all their needs, even those without the naturally acidic soil that blueberries love can grow these plants. Fill your larger containers with these compact shrubs, and place them for easy picking.