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You can change the color of your hydrangreas
by
Its So Very Cheri
(IC: blogger)
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Published October 2nd, 2012 3:02 PM
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Douglas Hunt on Oct 07, 2012Soil pH is an important factor in hydrangea color because it affects mineral absorption, namely aluminum. The absorption of aluminum results in blue hydrangeas, the lack of it, pink. Aluminum is more absorbable in acidic soil (pH 5.2 to 5.5), so authorities recommend that a solution of 1/2 oz (1 Tbsp) aluminum sulfate per gallon of water be applied to plants (which are at least 2-3 years old) throughout the growing season. The aluminum sulfate will lower the soil pH, as will the addition of organic matter. Aluminum is less absorbable in alkaline soil (pH of 6.0 to 6.2). (Do not go above this or you plants may have an iron deficiency.) If pink is your goal, use a fertilizer high in phosphorus.
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Its So Very Cheri on Oct 08, 2012Joyce J and Zimmerer if you click the link it will take you to my post and give you lots of information, rather than retyping it all out here. ttp://itssoverycheri.com/2012/07/04/you-can-change-the-colors-of-your-hydrangeas/
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