Frenchflair traditional-landscape
 

Frenchflair

a Vibrant blue macrophylliia hydrangea bush .

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cynthiasold wrote:
How do I get my hydrandea this dark blue?? - How do I get my hydrangea this dark blue??
     Comment   March 19, 2012
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Michelle
Hi again, Cynthia,
Your soil must be rich in aluminum for your hydrangea to get this dark blue. If it is not, an addition of aluminum sulfate on the soil, around the plant, will help. I learned also that the choice of fertilzer will affect the color. A fertilizer low in phosphorus and high in potassium is helpful in producing a good blue color(25/5/30 is good. Potassium is the last number). Superphosphates and bone meal should be avoided when trying to produce blue.
Hope this will help.
March 20, 2012 at 9:26AM     
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igerrez
In the deep southeastern US where we have lots of pine trees, almost ALL of the existing older cultivars of hydrangea have turned this color over time. In order to have pink or even deep purple flowers (again, on these older cultivars) we have to add lime, which helps return the soil to a less acidic state. Just an FYI in case you prefer pink or purple flowers on your hydrangea in the Deep South.
June 4, 2014 at 6:39PM   
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soil must be rich in aluminum for your hydrangea to get this dark blue. If it is not, an addition of aluminum sulfate on the soil, around the plant, will help. I learned also that the choice of fertilzer will affect the color. A fertilizer low in phosphorus and high in potassium is helpful in producing a good blue color(25/5/30 is good. Potassium is the last number). Superphosphates and bone meal should be avoided when trying to produce blue.
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Your soil must be rich in aluminum for your hydrangea to get this dark blue. If it is not, an addition of aluminum sulfate on the soil, Your soil must be rich in aluminum for your hydrangea to get this dark blue. If it is not, an addition of aluminum sulfate on the soil,
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Michelle Hi again, Cynthia, Your soil must be rich in aluminum for your hydrangea to get this dark blue. If it is not, an addition of aluminum sulfate on the soil, around the plant, will help. I learned also that the choice of fertilzer will affect the color. A fertilizer low in phosphorus and high in potassium is helpful in producing a good blue color(25/5/30 is good. Potassium is the last number). Superphosphates and bone meal should be avoided when trying to produce blue. Hope this will help.
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