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I grow my Blueberries in the ground but I know most of you do so in pots.
Either way that nice ericaceous (acidic) compost will be somewhat less acid after a seasons growth and after all this winter rain probably even less than would be normal.
To keep the soil acidic you will need to either repot in new compost or water in some sulphate of iron as per the instructions on the packet. It is best to do this in spring, just as the bushes start to grow. As repoting only adds a little extra soil and trying to change too much damages the very tender roots I tend to go with the sulphate of iron.
Another tip to keep the soil acid is to feed them with azaelea and rhododendron food a couple of times a year as its good for fruiting and keeps the acidity where it should be.
Either way that nice ericaceous (acidic) compost will be somewhat less acid after a seasons growth and after all this winter rain probably even less than would be normal.
To keep the soil acidic you will need to either repot in new compost or water in some sulphate of iron as per the instructions on the packet. It is best to do this in spring, just as the bushes start to grow. As repoting only adds a little extra soil and trying to change too much damages the very tender roots I tend to go with the sulphate of iron.
Another tip to keep the soil acid is to feed them with azaelea and rhododendron food a couple of times a year as its good for fruiting and keeps the acidity where it should be.
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