Soil pH Acidity and Alkalinity - Knowledgebase Question

Phila, PA
Question by yes2000
May 9, 2000
How do I determine if I have acid or alkaline soil? I want to plant a blue hydrangea and don't want my flowers to come out pink.


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Answer from NGA
May 9, 2000

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To check the acidity or alkalinity, you will need a simple soil testing kit that includes a measure for pH. A relatively acid pH reading below about 5.5 should yield blue flowers, a reading above about 6.5 should give you pink flowers. In your area I would expect the soil to be normally somewhat acid. Soil test kits are available through the Burpee catalog (800-888-1447).

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