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Re: butterfly bush and hydrangeas

Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html

There are white hydrangea and then there are colored hydrangea.  The
colored kinds will be either blue or pink (and shades in between)
depending on your ph of your soil.  Alkaline PH (like 7.0, 7.5) will
produce pink blooms, whereas acid PH (5.5, 6.0) will produce blue
hydrangeas.  There are different varieties too they will produce
different shades of each color.  For instance, if I bought a variety
called Nikko Blue, it would still be more pinky in my yard because I
have alkaline soil.  You can always help to alter your soil ph (lime to
acidify, sulphur to alkalize), but to me it seems like a lot of work.
I'd just rather let the hydrangea bloom the color it wants to.

sarah oddo wrote:
> 
> Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html
> 
> I don't know if there is any connection to your problems, but I do have
> success with each of the plants you mentioned.  I live in Kentucky, and I
> bought a butterfly bush last October for my Mom.  The people at the nursery
> told me to wait until spring, then clip back all the dead branches that had
> no green in the center.  They said that depending on the severity of the
> winter, the bush may die all the way back, or a lot of growth may live.  It
> worked- the bush is sprouting branches all over the place!
> 
> We also have a huge bleeding heart (about 4 ft. in diameter) and a large
> hydrangea in the same area.  The bedrock in the area is all limestone, so
> our soil pH is very high and naturally clayey- although we've been gardening
> for approx. 30 years, and it is really good soil now.
> 
> I heard or read somewhere that the color of hydrangeas is dependent on soil
> pH (ours is a blah white), but I noticed an article in Southern living with
> all different shades of blue hydrangeas.  Is there any relationship between
> pH and color?
> 
> Sarah
> Lexington, Kentucky
> 
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