In reality it would take an awful lot of tap water to change the ph of soil, a little less so in pots perhaps but still lots. I grow my 20 odd bushes in the ground and as mentioned previously give them some sulphate of iron in the autumn and acidic plant fertilizer in the spring and summer. If you have soil in good heart it will hold onto moisture to lessen the requirements for watering. If required and there is no rainwater to hand, they get tap water.
Never add manure to your blueberries or add potash as you would other fruit bushes, the manure burns the roots and the potash is very alkaline which would change the ph drastically. There is a lot of nonsence and rot written about blueberries but if you keep to a few basic rules they will romp away and provide you with a bountiful harvest of tasty fruit.
Last edited by pigletwillie; 01-08-2006 at 05:10 PM.
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